A WORLD BANK COUNTRY STUDY PUB-2335 INDIA Economic Issues in the Power Sector November 1979 The World Bank issues country economic studies in two series. This report is a working document and is, as such, part of an informal series based wholly on materials originally prepared for restricted use within the Bank. The text is not meant to be definitive, but is offered so as to make some results of internal research widely available to scholars and practitioners throughout the world. A second, more formal series entitled World Bank Country Economic Reports is published for the Bank by The Johns Hopkins University Press, Baltimore and London. Titles of these and all other Bank publications may be found in the Catalog of Publications, which is available free of charge from World Bank, Publications Unit, 1818 H Street, N.W., Washington, D.C. 20433, U.S.A. This report is a free publication. A small charge may be made if airmail postage is required. The views and interpretations in this report are the authors' and should not be attributed to the World Bank, to its affiliated organizations, or to any individual acting in their behalf. Copyright ( 1979 The International Bank for Reconstruction and Development/The World Bank The World Bank enjoys copyright under Protocol 2 of the Universal Copyright Conven- tion. Nevertheless, permission for reproduction of any part of this report is hereby granted provided that full citation is made. INDIA Economic Issues in the Power Sector This report is based on the findings of a mission to India consisting of the mission leader: C. Taylor, economist and C. White, consultant engineer and M. Gellerson, consultant economist in September/October 1978 and a follow-up visit by C. Taylor in February 1979. Ms. J. Voigt and N. Poduval at headquarters and Y. Satyanarayana in the New Delhi Office provided research assistance. V. Prakash, who is supervising the World Bank research project "Patterns of Industrial Development" kindly made his data tapes available to the mission. South Asia Regional Office The World Bank Washington, D.C., U.S.A. Preface This review has grown out of the World Bank's increasing involve- ment in the power sector in India. As the Bank's operations grew in number and size it was felt that an overall strategy of assistance was needed and that the initial step required was to increase the Bank's knowledge of the operations and procedures within the power sector. Therefore, a review of issues at the national level was undertaken, with the main mission visiting India in September and October 1978 and a follow-up mission in February 1979. The present report contains the findings of those missions. The range of subjects that could be covered at the national level is very large and the complexity of the Indian power sector means that much detailed work would be required for a definitive, comprehensive sector review. This was felt to be beyond the scope of two brief missions. This review has, therefore, concentrated on two major areas which are principally economic in character. These are (i) demand for electricity and (ii) investment in the power sector. It must be emphasized that the power sector is a sophisticated and complex part of India's basic infrastructure: the many Central organiza- tions and the 18 State Electricity Boards between them employ over 600,000 regular staff. Thus, even on the subjects reviewed -- demand and investment -- the examination has been cursory and more work on them is highly desirable. In addition there are other major areas in which future work could be profit- ably taken up, including investment implementation, thermal plant operation and overall system management. The Government of India is well aware that there are many problems with the operation and development of the power sector. To define these problems and to prescribe methods of dealing with them, a cpmmittee was recently established under the chairmanship of one of the members of the Planning Commission. The committee's terms of reference call for an exam- ination of "all aspects of the functioning of State Electricity Boards and Central Organizations engaged in electricity generation, transmission and distribution and make recommendations for improving them". This committee should have far-reaching impact when it reports its conclusions early in 1980. The main text of this review is organized in two major sections: Section I, entitled "Consumption", and Section II, entitled "Investment Planning and Resource Allocation". Before these two major sections, there is a summary followed by a background discussion of the relationship of the power sector with the economy at large and the institutional and legal frame- work of the sector, which should be particularly useful to readers who are not familiar with the power sector in India. At the very end of the report the main conclusions are drawn together in a separate section. The annexes to the main report are mostly statistical but also include two notes on terminology for the lay reader, graphs and an organization chart for the sector. Michael H. Wiehen Acting Vice President South Asia Region TABLE OF CONTENTS Page No. Map SUI{ARY ........... ................................ i - iii BACKGROUND: 1. Electricity and the Economy ...... 1 2. The Institutional Framework ...... 3 I * CONSUMPTION . ............... . .................. 10 1. Past Patterns of Demand ........ .. ........ 10 2. The Incidence and Impact of Shortages .... 12 3. The Efficiency of Power Use ............. . 18 4. Tariffs ...... ........... ................. 23 5. Demand Forecasts .......... .. ............. 27 II. INVESTMENT PLANNING AND RESOURCE ALLOCATION .... ... 35 1. Resources Devoted to Power Sector Development ............................ 35 2. The Investment Planning Process .......... 40 3. Present Investment Plans .... ............. 43 CONCLUSIONS ....................................... 51 ANNEXES . .......................................... 56 GRAPHS ........... ............................... 172 ORGANIZATIONAL CHART ............................. 175 IBRD 10483R4 70 I r-~-S \ eo 30 MARCH 19,0 DEMOCRATIC REPUBLIC OF AFGHANISTAN Z, L/ t I ND A JAMMU J-d KAS5HMl I? Srinogar - . 9 S Sotoe and Union Terrilory Cop.tols / .. " '_ ,__, , > * Nt-onol Cop to1 r H s> ! ;Z -0,tP//htMA CHA; Z ,< E, °0 Other Citfes -.--Intern.tiono[ Boundaries PAKISTAN n Siria -fS If PU~~~~~~'LNJAB 8 30'3 / X V ./sftA~As . s. CHINA Deln / j D'ltDE!8 / J d 1HI .._ J / N > ~~~~~~~W DELHI _,.IrJ11ag,ir R: y:OES'y / EWDELA. T NEPAL N. <2t'AN . .nn A *( 7' PA'~~~~~~~~~~~~~~A DESHA B'HUTAN T/C ' . hLucknow _A < 1 4 >) Konpur rpo Pot no $C \/Oap9r@ } -''.-'LS>'' :Udaipurr K 1^ BiHA' Y'BANGLADE ES ~HaIl jaip,,'~ ~ ~ ~ ~ ~~~~~~~~~~~~~~~~~~Agnaa Gandhinaoqrr2 t Bhopol r WL sr s, - 7G JA AtreAhmdoba . V' < LNG/ \ t < M A D f 7 Y A P h A D f S H ttv 1 B U R M5 5 A GIJJA/LAT toGA, '~~~~~~~~~~.n.,'n -2rr 2. 0 too 200 3 4X C390 7(0 8f KILOMETERS 4 Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: HIMACHAL PRADESH (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.TI/ Industrial H.T. Agricultural Public Lighting Commercial End of 1972 Urban Areas First 500 Kwh Demand Charge Demand Charge 14 First 30 Kwh First 15 Kwh 11 Rs 6.5/KVA/mo. Rs.0.5/BHP/mo. plus Rs 1.5/ 35 34 Balance month/bulb Next 50 Kwh Next 25 Kwh 10 Energy Charge Energy Charge 20 15 First 100,000 Kwh First 1,500kwh Balance 12 Balance 8 5.5 9 Rural Areas Next 200,000 Kwh Balance First 15 Kwh 5.25 8 15 Balance 5 Next 25 Kwh Overall Maximum Rate 20 8 paise/Kwh Balance 8 End of 1976 First 15 Kwh First 500 Kwh Demand Charge First 1,500 Kwh 25 First 30 Kwh 37 18 Rs. 17/KVA/mo. 9 plus Rs 3/bulb 45 Next 25 Kwh Next 1000 Kwh Energy Charge Balance 8 Next 50 Kwh 27 15.5 First 100,000 Kwh 35 Balance 17 Balance 13 12 Balance Next 200,000 28 10 Balance 8 1/ For small industrial consumers. Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: JAI1Th!U & KASHMIR (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972' First 50 Kwh Demand Charge Demand Charge 10 Energy Charge First 200 Kwh 25 Rs. 4/KVA/mo. Rs. 4/KVA/mo. Minimum Charge Rs. 1.5-9/lamp/ 35 Next 50 Kwh Energy Charge Energy Charge Rs. 24/H.P./year month depending on Next 300 Kwh 20 4 for Kashmir 2.5 for Kashmir wattage 30 Balance 15 6 for Jammu 4 for Jammu Maintenance charge Balance 25 Minimum Charge Rs. 1-11 depending Rs. 3.5-6 on wattage End of 1976 First 50 Kwh Demand Charge Demand Charge 10 First 200 Kwh > 28 Rs. 4/KVA/HP/mo. Rs.4/KVA or Minimum Charge 38 Next 150 Kwh Energy Charge HP/month Rs.24/H.P./year Balance 33 4 (Kashmir) Energy Charge 40 Balance 38 6 (Jammu) 2.5 (Kashmir) Minimum Charge Minimum Charge 4 (Jammu) Rs.6.75/Kw/mo. Rs.4-6.75/mo. Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: KARNATAKA (Energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultura1 Public Lighting Commercial End of 1972 Lights 30 12 Demand Charge 11 15 First 120 kwh 40 Minimum Charge Rs 71BHP/mo First 500 KVA Minimum Charge Minimum Charge Balance 35 Rs 2/mo Rs 9/KVA/mo Rs 36/HP/vear Rs 30/KW of con- Minimum Charge Heat & Power Next 500 8 nected load Rs 3/250 W of 12 Next 2000 7 connected load Minimum Charge Next 3000 6 Rs 8/KWI Balance 5 Energy Charge First 100 kwh 5 Next 100 4 Next 100 3.5 Balance 3 1/ End of 1976 Lights Demand Charge Demand hrge Demand Charge Demand Charge First 30 kwh Rs lO/instal- Rs lO/KVA/mo Rs lO/instal- Rs 3/installation/mo 30 lation/mo Energy Charge lation/mo Energy Charge Balance 35 + Energy Charge 6 Energy Charge First 30 kwh 40 15 15 Balance 50 Demand Charge Minimum Charge Rs I/instal- Minimum Charge Rs 50/HP/year Minimum Bill lation/mo Rs 7/NHP/mo Rs 3/installation/mo Heat & Power 14 Demand Charge Rs 10/instal- lation/mo Minimum Charge Rs 8/KW/mo 1/ There was a 15% surcharge on both demand and energy charges in 1976 for every consumer category except agriculture. Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: KERALA (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 First 60 Kwh First 2,000 Kwh Demand Charge 9 Rs.1-603/year/bulb 38 30 15 First 500 KVA Minimum Charge depending on wattage Minimum Charge Balance 15 BAlance 14 Rs ll/KVA/mo. Rs. 7/month and hours of use Rs. 6/mo. Minimum Charge Minimum Charge Next 500 KVA Rs. 4/mo. Rs. 4/KW Rs I0/KVA/mo. Balance Rs 9KVA/mo. Energy Charge First 50,000 Kwh 7 Next 50,000 Kwh 6.75 Next 50,000 Kwh 6.5 I Next 50,000 Kwh 6.25 Next 50,000 Kwh 6 Next 50,000 Kwh 5.75 Balance 5.5 Minimum Charge End of 1976 Rs 4/KW First 50 Kwh First 2,000 Kwh Demand Charge Single-phase Energy Charge Lighting 25 15 Rs.22KVA/mo. Fixed charge 30 38 Next 50 Kwh Balance 14 Energy Charge Rs.5 meter/mo. Fixed Charges Minimum Charges 15 Minimum Charge First 250KWH/KVA/mo. Energy Charge Rs 4.25 to Rs.6/mo. Balance 10 Rs.4/KW/mo. 6 10 Rs 8.50 per lamp Heat and Power Fixed Charge Next 250KWH/KVA/mo. Three Phase 24 Rs.4/month 5 Fixed Charge Minimum Charge x Balance 4 Rs. 10/meter/mo. Rs. 8/mo. Energy Charge 10 Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: MADHYA PRADESH (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 28 15.5-/ Demand Charge 13 First 12000 kwh Same as domestic Minimum Charge Minimum Charge First 500 KW Minimum Charge 31 Rs 2/mo 3OKwh/BHP/mo Rs 10/KW/mo 36OKwh/BHP/year Next 36,000 kwh Next 1000 KW 29 Rs 9.5/KW/mo Balance 21.5 Balance Rs 8.5/KW/mo Energy Charge First 50000 kwh 7.7 Next 150,000 kwh 7.5 Next 300,000 kwh 7.25 Balance 6.8 End of 1976 First 50 kwh 22 Demand Charge 16 First 12000 Kwh Lighting 40 30 Minimum Charge First 500 KW Minimum Charge 37 Minimum Charge Balance 32 Rs 10.75/BHP/mo 13.85 Rs 3.75-6.25/mo Next 36000 Kwh Rs 3/mo Minimum Charge Next 1000 KW depending on BHP 34.8 Power 25 Rs6.25/mo 13.3 Balance 25.8 Minimum Charge Balance 11.9 30 Kwh/BHP/mo Energy Charge First 50,000 Kwh 12.2 Next 1,500,000 > 11.9 Next 3,000,000 x 11.6 H Balance 10.95 1/ Alternative tariffs are available o Souce: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: MAHARASHTRA (Energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 First 30 Kwh 18 Demand Charge 18 Energy Charge 35 31 Minimum Charge First 1000 KVA Minimum Charge First 200 kwh/mo/KW Minimum Charge Balance 25 Rs 4.95/BHP/mo Rs 12/KVA/mo Rs 40/BHP/year 20 Rs 3.5/mo Minimum Charge Balance Balance 6 Rs 2.00 Rs ll/KVA/mo Fixed Charge Energy Charge Rs 1 lamp/mo for First 100,000 Kwh street lights on 8 distribution lines Next 200,000 Kwh Rs 2.5 lamp/mo for 7 street lights not Balance 6.5 on distribution lines End of 1976 I-. Lights & fans 25 Demand Charge 22 First 100 Kwh/mo/KW Lights & fans m First 30 kwh Minimum Charge Rs 16/KVA/mo Minimum Charge 18 40 31 Rs 5/BHP/mo Energy Charge Rs 40/BHP/mo Next 100 Kwh/mo/KW Minimum Charge Balance 35 11 22 Rs 4 /mo Minimum Charge Balance 10 Heat & Power Rs 4 /mo 30 Heat & Power Minimum Charge 20 single phase supply Minimum Charge Rs 15 /mo single phase three phase supply supply Rsl1/mo Rs 30,/mo three phase supply Rs20 /mo Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: ORISSA (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 Hydro Hydro Hydro Hydro Hydro First 30 Kwh 14 Demand Charge 12 21 First 100 KWH 28 Minimum Charge First 4000 KVA Minimum Charge plus maintenance 28 Next 50 Kwh Rs.6.5/kw/mo. Rs. 9/KVA/mo. Rs.24/BHP/year charge of between Balance 23 20 or Rs.5/BHP/mo. Balance Diesel Rs.1-5.5/lamp/mo. Minimum Charge Balance 13 Rs. 8/KVA/mo. 25 according to type Rs. 2.5 for the Minimum Charge Diesel Energy Charge Minimum Charge and wattage first KD and Rs. 2 Rs.1.5 for first 25 First 1,000,000 Kwh Rs.5/BHP/mo. Diesel for each additional KW and Rs 1 for Minimum Charge 8 19 KW each additional Rs.5/BHP/mo. Balance 7 plus maintenance KW Overall Maximum Rate charge of Rs.12/ 10 paise/Kwh lamp/year Diesel 44-50 End of 1976 First 30 KWH First 200 KWH/KW/mo. Demand Charge 16 26 First 100 KWH 31 18 First 4000 KVA Minimum Charge Fixed Charge 34 Next 50 Kwh Balance 17 Rs.10/KVA/mo. June - Oct. Rs 1-8.00/lamp Balance 29 23 Minimum Charge Balance Rs.l/BHP/mo. Minimum Charge Balance 16 Rs.10/KW/mo. Rs.9/KVA/mo. Nov. - May Rs.4.5,5, and Minimum Charge Rs.7.5/BHP/mo. Energy Charge Rs3/BHP/mo. 10 for the first Rs.5 for first First 400KWH/KVA/mo. one half KW, second KW and Rs.6 for 12 one half KW, and each additional Balance 11 remaining KW's. KW Overall Maximum Rate 14.5 paise/Kwh Source: ERB H ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: PUNJAB (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 First 15 KWH First 500 Kwh Demand Charge Fixed Charge Energy Charge First 30 KWH 32.81 11.0 First 1,000 KVA Rs.7-9/BHP/mo. 15 32.81 Next 25 KWH Next 1000 Kwh Rs. 6.5/KVA/mo. depending on BHP Maintenance Charge Next 50 KWH 14.06 10.5 Balance Demand Charge Rs.1-17/lamp/mo. 14.06 Balance 7.81 Balance 9.0 Rs.5.5KVA/mo. Rs.l/BHP/mo. depending on type of Balance 10.94 Minimum Charge 14inimum Charge Energy Charge lamp and wattage Minimum Charge Rs.l/ o. Rs 2.50/KW First 100,000 KWH Rs. 1.5/mo. 5 Next 200,000 KWH 4.5 Balance 4 End of 1976 First 15 KWH 18.5 Demand Charge Demand Charge 25 First 80 KWH 35 Minimum Charge Rs.14/KVA/mo. Rs.1.5/BHP/mo. Fixed Charge 40 Next 25 KWH Rs 9.00/KW Energy Charge Energy Charge Rs 3.25-4.50/lamp Balance 50 20 11 19.0 Minimum Charge Balance 18 Overall Maximum Rate Minimum Charge Rs.5/month Minimum Charge 18 paise/Kwh Rs.9/BHP/mo. Rs. 3/mo. 1/ Small Industrial LT consumers. Source: ERB I-J ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: RAJASTHAN (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 Hydro & Steam Hydro & Steam Hydro & Steam Hydro & Steam Hydro & Steam Hydro & Steam 37 13.5 Demand Charge 13 28 Lighting Minimum Charge Minimum Charge First 600 KVA Minimum Charge Minimum Charge 40 Rs.2/mo. Rs.42/BHP/year Rs.8.25/KVA/mo. Rs.42/BHP/year Rs.2/lamp/mo. Minimum Charge Diesel 15% surcharge in Next 1,200 KVA Diesel Diesel Rs.2/mo. 50 effect from 6-1-69 Rs.8/KVA/mo. 13 35 Heat and Power Minimum Charge Diesel Rs. 7.5/KVA/mo. Minimum Charge Minimum Charge 22 Rs.2/mo. 26 Energy Charge Rs.42/BHP/year Rs. 2.5/lamp/mo. Minimum Charge Minimum Charge First 50,000 Rs.5/mo. Rs.84/BHP/year 7 Diesel Next 150,000 Lighting 6.75 53 Next 300,000 Minimum Charge 6.5 Rs.2/mo. Balance Heat and Power - 6.25 28 Minimum Charge Rs.2/mo. End of 1976 Light 28 Demand Charge 30 Energy Charges First 500 KWH 43 Minimum Charge Rs.18/KVA/mo. Minimum Charge 33 55 Heat and Power Rs.10/HP/mo. Energy Charge Up to 3HP Minimum Charge Next 500 KWH 30 First 300,000 KWH Rs. 90/HP/year Rs 3.00/point 50 16 3HP-5HP Next 500 KWH Next 500,000 KWH Rs. 100/HP/year 45 15 5HP - 7.5HP Balance 35 Next 700,000 KWH Rs. 140/HP/year Minimum Charge 14 7.5-lOHP Rs.10/KW/mo. Next 1,000,000 KWH Rs. 160/HP/year 12 above 10HP Lalance 11 Rs.175/HP/year Minimum Charge z Rs. 110-130/KVA/mo. x Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: TAMIL NADU (Energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 First 50 kwh 18 Hydro First 100 kwh Filament lamps First 500 kwh 45 35 Minimum Charge Demand Charge 12 First 16,000 kwh Balance 40 Balance 30 Rs 5.00/HP/mo First 500 KVA Balance 11 18 Minimum Charge Minimum Charge Rs 12.5/KVA/mo Minimum Charge Balance 15 Rs 5/mo Rs 3/mo Next 500 KVA Rs 20/HP/year Mercury Vapour lamps Rs ll.5/KVA/mo Rs 1.75-5/mo Balance Fluorescent lights Rs 9.5/KVA/mo Rs 5-8/mo Energy Charge First 50,000 kwh 9.25 Next 50,000 kwh 8.75 Next 200,000 kwh 7.75 Next 500,000 kwh 6.25 Balance 6 Thermal Demand Charge First 1000 EVA Rs 14.5/KVA/mo Balance Rs 14/EVA/mo Energy Charge First 50,000 kwh 11.75 Next 450,000 11.5 Next 500,000 11.25 Next 500,000 10.75 Next 1,000,000 10.25 Balance 7.5 End of 1976 35 20 + 50% surcharge Demand Charge 16 Energy Charge 45 + 50% Minimum Charge + lP/kwh special 15/EVA/mo Fixed Charge 27 surcharge + Rs 3/mo surcharge Energy Charge Rs 2.50/HP/mo Fixed Charge 1P/kwh special Minimum Charge First 500,000 kwh Rs 1.25-5.00/lamp surcharge Rs 5/HP/mo 12 Balance 11.5 + 50% surcharge + lP/kwh special surcharge Minimum Charge Rs 225/EVA/year 1/ Small industrial consumers. Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: UTTAR PRADESH (energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T.1/ Industrial H.T. Agricultural Public Lighting Commercial End of 1972 Lights 20 Demand Charge Energy Charge 26 Rs.3/mo. 30 Rs.12/KW/mo. 20 Minimum Charge same as domestic Minimum Charge Energy Charge Fixed Charge Rs.1.5/lamp/mo. Rs.3/month First 200 KWH Rs.36/BHP/year Power 9.25 19 Next 200 KWH Minimum Charge 7.75 Rs.3/month Balance 6.75 End of 1976 -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~- Lights 24 First 200 KWH/KW Rs.15/BHP/mo. 28 Light 46 Minimum Charge 19 56 Minimum Charge Rs.15/BHP/mo. Balance Minimum Charge Rs.5/mo. 13 Rs.50/mo. Power Minimum Charge Power 46 36 Rs.25/KW/mo. Minimum Charge Minimim Charge Rs.50/mo. Rs.5/mo. 1/ Small Industrial consumers only Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: WEST BENGAL (Energy charge and tariff are in paise/kwh and demand charge and Tinimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. AgrLcultural Public Lighting Commercial End of 1972 Lights 36 First 2000 kwh 11 Demand Charge First 500 kwh 16 Rs 3-11.5/lamp/mo Same as domestic Minimum Charge Balance 10 First 100 KVA Balance 14 depending on wat- Rs 2/mo Minimum Charge Rs 13/KVA/mo Minimum Charge tage Heat & Power Rs 36/HP/year Next 200 KVA Rs 50/HP/year Minimum Charge 15 Rs 12/KVA/mo 75P/lamp/mo. Minimum Charge Balance Rs 2/mo Rs ll/KVA/mo Energy Charge First 10,000 kwh 7 Next 20,000 kwh 6.5 Balance 6 End of 1976 Lights 45 Same as agri- 6/11 KV 32 Fixed Charge Lights 55 Minimum Charge cultural Demand Charge Minimum Charge Rs 4.50-16.30/ Minimum Charge Rs 4.5/mo Rs 30/KVA/mo Rs 75/HP/year lamp Rs 5.5/mo Heat & Power 32 Energy Charge Heat & Power 40 Minimum Charge 12 Minimum Charge Rs 4.5/mo or 33 KV Rs 6/mo or Rs 6/HP/mo de- Demand Charge Rs 8/HP/mo de- pending on use Rs 30/KVA/mo pending on use Energy Charge 9.5 Source: ERB ELECTRICITY TARIFFS FOR SEBs FROM 12-31-72 to 12-31-76: DELHI (DESU) (Energy charge and tariff are in paise/kwh and demand charge and minimum charge are in rupees) Domestic Industrial L.T. Industrial H.T. Agricultural Public Lighting Commercial End of 1972 Lighting & fans 15 Demand Charge same as indus- 15 + mainten- 22 18 Minimum Charge Up to 500 KW trial L.T. ance charge Minimum Charge Minimum Charge Rs 5/KW Rs 10/KW/mo Rs 3/lamp/mo Rs 3/mo Rs 1.5/mo Up to 1000 KVA Power 14 Rs 8/KVA/mo Minimum Charge Next 4000 KVA Rs 2.5/mo if Rs 7/KVA/mo below 5KW Balance Rs 3/mo if Rs 6/KVA/mo above 5KW Energy Charge First 500 kwh 9.5 Next 500,000 kwh 9 Next 1,000,000 kwh 8.5 Balance 8 Overall Maximum Rate End of 1976 13.50 paise/Kwh 25 22 Demand Charge 20 22 35 Minimum Charge Minimum Charge For 500 KW Fixed Charge Minimum Charge Rs 3/mo Rs 6/HP/mo Rs 20/KVA/KW/mo Rs 5.50/lamp Rs 5/KW/mo For 1000 KVA Rs 16.5/KVA/KW/mo Next 5000 KVA Rs 16/KVA/KW/mo Balance Rs 15.5/KVA/KW/mo Energy Charge First 500,000 kwh 19.5 Next 500,000 19 Next 1,000,000 18.5 Balance 18 Source: ERB AVERAGE REVENUE REALISED FROM SALE OF ELECTRICITY BY STATE ELECTRICITY BOARDS (Paise per Kwh) Year Region Domestic Comercial Agricultural Small Industry Large Industry Average 1974/75 Northern 29.07 45.97 18.44 20.47 18.84 20.99 Western 30.12 35.48 19.16 20.28 16.75 19.20 Southern 35.79 59.48 13.23 21.99 17.37 21.09 Eastern 37.24 41.01 18.35 23.07 18.64 21.21 Total 32.78 49.53 16.61 21.17 17.64 20.57 1975/76 Northern 29.84 46.51 19.72 20.78 19.06 21.61 Western 30.11 35.49 22.12 23.49 19.54 21.91 Southern 37.49 65.39 16.52 24.38 19.37 23.92 Eastern 38.85 47.02 15.39 28.61 23.43 25.41 Total 33.68 52.47 18.94 23.38 20.06 23.01 V 1976/77 Northern 35.78 47.06 19.99 22.09 22.27 23.78 Western 30.46 36.35 22.91 25.03 22.15 23.87 Southern 37.56 65.93 17.50 24.49 20.45 25.11 Eastern 38.68 47.35 15.91 28,56 23.87 25.40 Total 35.56 53.21 19.60 24.00 21.87 24.46 Notes: The average electric rates used are: (1) Domestic lighting (30 kwh/month), (2) Commercial lighting (200 kwh/month), (3) Agricultural 10 HP, 15% LF (817 kwh/month), (4) Small Industry, 10 KW, 20% LF (1460 kwh/month), (5) Large Industry 7 250 KW, 407 LF (73,000 kwh/month). Northern Region - Haryana, Himachal Pradesh, Punjab, Rajasthan and Uttar Pradesh Western Region - Gujarat, Madhya Pradesh & Maharashtra Southern Region - Andhra Pradesh, Karnataka, Kerala & Tamil Nadu x Eastern Region - Bihar, Orissa & West Bengal. H Sources: Average Electric Rates and Duties in India, August 1976, Central Electricity Authority and GR PRICE INDICES IN THE ENERGY SECTOR (1970/71 =100) 1961/62 1962763 1963/64 1964/65 1965/66 1966/67 1969/70 All Commodities(WPI) 55.2 55.4 59.7 67.4 72.8 84.4 88.3 91.3 94.7 (1000.00) Coal (11.47) 59.6 62.5 66.8 69.3 72.5 76.5 88.1 100.2 98.9 E lectricity (24.00) 66.6 72.6 76.6 79.7 83.2 91.4 92.2 95.4 95.8 Petroleum (6.02) 71.8 73.3 80.9 81.2 83.5 88.6 91.7 93.8 97.1 Growth Rates 1970/71 1971/72 1972/73 1973/74 1974/75 1975/76 1976/77 1977/78 1961/62- 1970/71- - ~~~1970/ 71 1977/78 All Commodities(WPI) 100.0 105.6 116.2 139.7 174.9 172.9 176.6 185.6 6.8 9.2 Coal 100.0 103.2 112.5 122.9 146.6 185.0 197.6 197.6 5.9 10.2 Electricity 100.0 102.5 105.7 111.3 137.2 158.1 171.6 181.4 4.6 8.9 Petroleum 100.0 130.2 142.0 317.1 686.5 700.3 740.3 785.2 3.7 34.2 Source: RBI Bulletins, various 1977 editions and the Fuel Policy Committee Report, 1974. The index for 1961/62 to 1970/71 for petroleum is only for petrol and diesel oil, weighted with the 1970 weights frorm the WPI. Thereafter, it is the index for crude petroleum and natural gas. Note: Figures for 1961/62 to 1970/71 are based 1960, spliced into the 1970/71=100 WPI by dividing by the index value to the last year. x - 128 - ANNEX I.4.21 AVERAGE REVENUE PER UNIT OF POWER SOLD (paisepkwh) 1970/71 1971/72 1973/74 1974/ 75 1975/76 Domestic 25.0k! 24.8 26.0 27.0 29.0 Commercial - 25.1 27.2 35.7 38.8 Industrial 9.7v/ 9.9 11.5 15.4 18.8 Public Lighting - 24.8 25.0 26.8 31.8 Traction - 11.5 12.8 16.2 19.7 Agricultural 14.2 14.4 16.0 18.9 21. 9 Water Supply and Sewerage - 9.2 13.0 14.8 18.6 Average-! 12.4 12.7 14.5 18.4 21.6 1/ The average revenue per unit sold excludes miscellaneous revenue not directly attributable to any particular class of consumer, e. g., rent. 2/ Includes Commercial. 3/ Includes Traction. Note: Regarding the 1970/71 figures, while it is not clear from the source tables if public lighting and traction are included under industry this seems likely. The per unit revenue for industry excluding these categories would be less than that given here, but not verAnuch so, since public lighting and traction are relatively small classes of consumer. Source: GR - 129 - Annex I.4.22 Page 1 of 4 THE LEVEL OF LONG RUN MARGINAL COST BASED (LRMC) TARIFFS This note is in three parts. The first two parts deal with long run marginal capacity costs, the third with LRMC tariffs as a whole. The first part shows that the average revenue realized from the capacity element of LRMC tariffs bears a simple relationship to the total size of the investment program and the expected increase in demand. The second part shows that this in turn is almost unaffected by considering only a short time slice of the investment program in a steady state growth situation. The third part uses the conclusions of the first two parts to calculate a lower bound for the average revenue that would be realized by LRMC tariffs. Part I This discussion is in terms of the average incremental cost concept rather than any other approach to LRMCs. This is not to argue that this is the best or most applicable way to calculate long run marginal costs, but, given the system characteristics in India (by and large mixed hydro-thermal systems) it is reasonable to assume that this concept yields values close enough for our purposes here to those that might otherwise be derived. Let AlrC = average incremental costs per KW of demand at time of system peak. 4 = present value of future generation expansion costs N = present value of future transmission expansion costs v = present value of future distribution expansion costs V = demand (KW) at time of system peak = energy demanded (kwh) per year L = low tension, or distribution X = high tension, or transmission Xi = capacity margins X W= losses = annuitizing factor iE = D / D AR = average revenue from the capacity component of a LRMC tariff per kwh sold, and = the present value of increments in... - 130 - Annex I.4.22 Page 2 of 4 Then NIc C - >I 14 N ^) (1) AT CLu ( :l " ) l e + S )/ Nz t (2) and (3) Rearranging (3), substituting (1) and (2) and expanding the 1 4> terms implies A R .:D > (G N)/L~b~ 4 ^ 9 ^ /t\9 %QC4N4S)C,, ./6-. - (4) where 5 h [ (>f4 XI + D J, Eq t6 9L Rearranging terms, < i>X + 4 ( +>4>NL) > L.' 9H ' _____D_ /h'Dm ) ) " L D t % 4D i- Conservative estimates of the values of the terms in if are: _ ~- ~ X~-o.ir, D .C N D.2. ; . Thus, J .> qo4 h 037 4 O.2 x o.l- c \ z o ' f - ~ ~ ~ ~ A In India, it is reasonable to assume S C. O , and so I-i > S q D Substituting into (4) implies '@ .~ A > (Cq 4N4XS) i 4^@ ___D But C ,. - e :DM and Q ;1L L. Therefore NIL> e(Q+-N*S) (9 ZD > (c+N4) h D \~~'D; L. &-D tD IXD since 1- L and 9 .' are together greater than 1. Furthermore :. - so it follows that AR > G(C9 C C -S) (5) - 131 - Annex I.4.22 Page 3 of 4 (5) may be restated in words as: the average revenue realized from the capacity com- ponent of LRMC tariffs is greater than the annuitized present value of the in- vestment program divided by the present value of the increase in kwh of consump- tion. Since this is true using the average incremental cost method of calculating LRMCs, it is an indication of the relationship for other methods of calculating incremental system costs in India, since peaking capacity in Indian systems is largely hydro; gas turbines are not being widely advocated for peaking in long term expansion plans. Part II The relationships in Part I are all defined in terms of present values of long investment streams. The purpose of this part is to show that the relation- ships are likely to be well approximated by summing investment in consecutive years and by considering just a short time period, i.e. 5 rather than 15 or 20 years. It is reasonable to assume that increments in capacity costs (X) and consumption (Y) will grow at about the same rate, O4 and that, as a first approx- imation, both will grow logarithmically. If i is the continuous discount rate and t the time subscript, then consider the expression U, where (A% r X eSO XFQ I ]/ E. O Mee~'.* (6). Since X . e c Yr Ye e? a S. xo (gSOCLkk Ltot} Removing the constants XO and YO from the integration, the integrals in the denominator and numerator are the same, so that U . Multiplying top and bottom by a simpler integral, it follows: and taking the constant terms into these integrals, this implies t1 - oX tUt / S H.(7) (7) has been shown to approximately equal to (6) when the discount factor i is removed and the period is shortened from 30 to 5 years. Applying this logic to expression (5) it is now shown to be true when G+N+S is simply the cost of the investment program for the next 5 years and 4t is the increase in consumption (kwh) expected over this period. (5) has now become a very simple formula it is possible to apply in Part III of this note. - 132 - Annex I.4.22 Page 4 of 4 Part III LRMC have of course two elements, a capacity cost and a recurrent cost and they vary from category to category of consumer. The average revenue per kwh sold for any consumer category or for all consumers taken together will be the sum of the average revenue of the capacity cost component of the tariff (A1) and a recurrent cost component (A2). Using (5), we can derive a lower bound for A1, for all consumers taken together. The New Draft Plan calls for an investment of Rs 157,500 million in the 5 years, 1978/79 to 1982/83. (This is the value of G+N+S in (5).) The annuitized cost of this investment is about Rs 16,700 million, when it is an- nuitized over 30 years at a 10% discount rate. Over the Plan period, total con- sumption (from the utility system) is expected to rise from 69,000 Gwh to 129,000 Gwh, per year, or by 60,000 Gwh. Thus, dividing Rs 17,000 million by 60,000 Gwh, a lower bound for A1 of about 28 paise/kwh is derived. In the original Andhra Pradesh study , marginal energy was considered to be generated from the older plant on the system, at an operating cost of roughly 10 paise/kwh. The study estimate was in 1975 prices, so that 10 paise/kwh is probably a conservative estimate of marginal energy costs in 1977/78 prices, in most States in India. (More recent work on tariffs in Andhra Pradesh, undertaken as part of a review of all aspects of the State power sector, suggests that between 11 and 13 paise/ kwh is the cost of energy supplied to H.T. and L.T. consumers respectively.) Allowing for sytem losses that average 18% throughout India (as forecast in the New Draft Plan), A2 for all consumers probably exceeds 12 paise/kwh. Thus, the average revenue realized by LRMC tariffs would be greater than 40 paise/kwh. FORECAST AND ANNUAL ENERGY REQUIRENENTS FOR ALL INDIA IN TBlE ANNUAL ELECTRIC POWER SURVEYS (Twit at the bus-bar) Annual Percentage 1962/63 1963/64 1964/65 1965/66 1966/67 1967/68 1968/69 1969/70 1970/71 1971/72 1972/73 1973/74 1974/75 1975/76 1976/77 Gvmt Rates Actuals 23.7 25.4 28.1 30.5 34.6 39.2 45.0 49.3 53.6 58.2 62.1 64.1 66.9 75.6 84.1!' 9.1 Forecasts Date of Number of Publieation Power Survey 1963 I 29.2 35.1 44.9 52.6 61.0 70.6 81.4 95.1 1*6 (15.0) (24.9) (47.2) (52.0) (55.6) (56.9) (65.1) (77.4) 1964 II 33.3 42.9 51.5 62.0 20.5 (18.5) (40.7) (48.8) (58.2) 1965 III 39.3 48.8 59.0 70.6 19.5 (28.9) (41.2) (50.5) (56.9) 1966 IV 38.5 46.3 54.8 62.5 76.0 16.6 (11.3) (18.1) (21.8) (26.8) (41.8) 1968 V 48.4 56.3 66.2 74.5 85.1 99.3 19.4 (7.6) (14.2) (23.5) (28.0) (37.0) (54.9) 1969 VI 53.9 61.3 68.3 75.7 87.7 11.8 (9.3) (14.4) (17.4) (21.9) (36.8) 1970 VII 60.9 68.1 76.3 86.1 11.5 (4.6) (9.7) (19.0) (28.7) 1974 IX 80.3 91.0 102.3 11.7 (20.0) (20.4) (21.6) Notes: 1. Figures in brackets are percentage deviations from actuals. For a number of years, the later ones especially, the actuals reflect shortages, that is they represent restricted requirements. The series of actuals is taken from successive Annual Electric Power Surveys and therefore does not correspond exactly to any of the series in the other tables of this report. There is a deviation in some observations of about 2=1 from the series for net generation by utilities, to which the actual series shculd correspond; this deviation is unexplained. 2. The Eighth Annual Electric Power Survey was not published. Source: The Annual Electric Power Surveys of India: various volumes. - 134 - ANNEX I.5.2 Page 1 of 3 EARLIER EFFORTS AT REGRESSION ANALYSIS This annex takes note of earlier attempts at using regression analysis to forecast power demand. A number of European countries have used this general method, including Austria, Belgium and the Netherlands. Indeed, it is such an obvious technique to apply, there must be very few developed countries where the method has not been tried out. In India, the Fuel Policy Committee experimented with regression tech- niques for long-term forecasting. Subsequently, the Planning Commission has used regression analysis to forecast energy demand as part of the work of the Energy Policy Group. Though the details of their work are not yet available, their approach is broadly similar to that used in this review (and the review of the Andhra Pradesh Power Sector). A more elaborate approach was recently adopted in a study for Andhra Pradesh undertaken by the Administrative Staff College (ASC) in Hyderabad. The ASC study disaggregated electricity demand into seven major cate- gories and one miscellaneous, for each of which two equations were fitted: one for the number of customers and one for the number of kwh consumed per customer. The equations were either linear or log linear depending on which fitted better, and were estimated starting with a large number of explanatory variables that was eventually reduced by stepwise elimination to 12 1/. The strength and weakness of this model lay in its flexibility. With so many explanatory variables that could be related to various state government 1/ In addition, there were 9 lagged endogenous variables. - 135 - ANNEX I.5.2 Page 2 of 3 policy instruments (as well as external factors such as the weather), it was possible to illustrate the likely effect of different policies: for example, the impact an increase in the number of L.T. Industrial consumers, which might have been the expected result of a policy of promoting small scale industry, could be readily analyzed. Its weaknesses as a tool for forecasting were two- fold. First, a statistical problem the model faced was multicollinearity. The effect is to render many of the explanatory variables next to valueless in fore- casting: many could be eliminated and the model simplified and virtually the same forecast result. The second problem was one of practicality. Any decision-maker using an analytical tool likes to know where errors are likely to arise and be able to make allowances for them. In statistical forecasting models there are five commonly recognised reasons why forecasts may go astray. These are: (i) the wrong equation or variables are used (specification error); (ii) coefficients are inaccurately estimated (estimation error); (iii) one-off shocks to the economy may alter the underlying situation (e.g.: the oil crisis or a change in State boundaries); (iv) more gradual changes in the economic structure may not be anticipated (e.g. an acceleration of rural electrification with a new Govern- ment); and (v) the exogenous variables -- the weather, the level of economic activity and so forth -- may be incorrectly forecast. In a relatively simple model it is easier to make allowances for errors of types (iii) to (v). Analysing the possible errors in the final demand forecast that may result from faulty fore- casts of 12 exogenous variables in a relatively complex business: there are 12 - 136 - ANNEX I.5.2 Page 3 of 3 assumptions to dispute instead of two or three in a simpler model. It is our judgment that, at the risk of maying type (i) specification errors, a simpler forecasting model is much to be preferred. - 137 - ANNEX I.5.3 Page 1 of 2 THE REGRESSION ANALYSIS: TECHNICAL DESCRIPTION This annex provides a more technical description of the regression model used in this review and acts as a guide to the statistical annexes that summarize the results of the regression. The model divides the economy and the consumption of power into three sectors: agriculture, industry and a residual or service sector. The industry and services parts of the sector model can be formallv descrihed hy equation (1): E: o vXQ9 t (1) where e is consumption in industry or in services, V is value-added in industry or services, +_ is the year in question, and O% kand b are coefficients to be determined by statistical regression. The agricultural part of the model is even more simple: CI-E- = c.dP j(2) Where de is the increase in electricity consumption in a given year in Kwh clP is the increase in pumpsets -- i.e. the number of sets in the pumpset program, and C is a coefficient to be determined by regression. Cross-section analysis among States has been used to avoid multicoll- earity between value-added and time. The coefficient X in eauatino (Il) is in fact estimated from the data in Annex I.5.4 using a truncated form of the equation: E . cLV (1?) - 138 - ANNEX I.5.3 Page 2 of 2 Annex I.5.5 presents the results of alternative approaches to analysing the available data. Approach 1 analyses the relationship between value-added and electricity consumption using time series data but not taking time as an exogenous variable. The value-added coefficient, the simple elasticity, corre- sponds to x in equation (1'). The results for agriculture are not reported be- cause the statistical fit was too poor. The elasticities for different sectors and time periods are quite high, and may overstate the relationship of value-added to electricity consumption to value-added, a view borne out to some extent by the results of the cross-section analysis; these are summarized in column (8) of Annex I.5.5. One of the most obvious alternatives to the sectoral model is that of fitting equation 1 to time series data alone. The results of such an exercise are summarized as approach 2 in Annex I.5.5. As the Annex shows, while the explanatory power of the two variables taken together is good, the significance of the coefficient estimate is generally in doubt, and negative values have no clear and acceptable economic interpretation. The sectoral model, the results for which are summarized under Approach 3, are therefore preferred. Annex I.5.6 presents analagous results for the five regions and for India (a) for the period 1960/61-1975/76, for which regional data are available, and (b) for regressions where captively generated electricity is included in the electricity consumption of both industry (based on the data in Annex I.1.15). As can be seen from that Annex, including captive generation makes little difference. Cross-section Data on Electricity Consumption: 1974/75 and 1975/76 State Domestic Product at Current Prices Electricity Consumption by Sector (Rs Millions) (gwh) rcricu tture Industry other Total Agriculture Industry Other Total 1974075 1975/76 1974/75 1975/76 1974/75 1975/76 1974/75 1975/76 1974/75 1975/76 1974/75 1975/76 1974/75 1975/76 7974/7% 1975/76 Andhra Pradesh 27,418 22,149 4,685 4,936 14,981 17,081 47,084 44,166 674.2 616.7 1,307.7 1,537.0 587.1 642.8 2,569.0 2,796.5 Assam 8,006 8,539 2,364 2,697 2,781 2,974 13,151 14,210 5.0 5.0 192.5 219.0 226.8 212.4 424.3 436.4 Bihar 25,155 N.A. 6,960 N,A. 11,247 N.A. 43,362 N.A. 75.1 454.2 2,188.6 2,598.5 617.5 711.9 2,881.2 3,764.6 Gujarat 10,230 14,050 9,000 8,850 10,890 12,600 30,120 35,500 1,008.7 869.0 3,055.3 3,347.8 728.7 795.3 4,792.7 5,012.1 Haryana 8,021 8,386 1,701 1,174 3,669 44,165 13,391 14,625 527.6 594.6 520.4 777.9 191.0 229.2 1,239.0 1,601.7 Himachal Pradesh 2,373 2,361 187 191 1,348 1,442 3,908 3,994 2.1 2.6 40.5 47.7 166.6 170.2 209.2 220.5 Jammu & Kashmir 2,540 2,712 249 271 1,433 1,594 4,222 4,577 20.3 22.3 90.1 100.5 150.9 168.1 261.0 290.9 Karnataka 17,816 17,253 2,598 3,038 5,027 5,767 25,441 26,058 295.0 312.4 2,'70.0 3,330.0 675.6 771.9 3,740.6 4,414.3 Kerala 11,055 10,753 1,957 2,010 7,306 8,579 20,318 21,342 101.1 120.5 1.395.1 1.497.4 332.9 379.1 1,829.1 1,997.0 Madhya Pradesh 22,959 20,815 5,997 6,601 8,685 9,360 37,641 36,776 161.8 170.5 2,082.7 2,660.0 534.9 555.6 2,779.4 3,386.1 Maharashtra 23,922 24,703 16,366 17,175 29,438 32,874 69,726 74,752 667.9 802.7 6,274.0 5,934.6 2,429.3 2,753.2 9,371.2 9,490.5 Orissa 11,545 12,955 1,389 1,621 3,665 4,298 16,599 18,774 8.9 9.0 1,426.6 1,844.5 194.7 241.9 1,630.2 2,095.4 punjab 13,411 13,384 2,162 2,534 6,262 7,378 21,835 23,296 695.9 897.2 1,191.6 2,048.41/ 331.9 434.2 2,219.4 3,379.8 Rajasthan 14,171 15,926 2,024 2,284 6,628 7,372 22,823 25,582 347.0 353.9 878.8 1.092.5 334.5 374.9 1,560.3 1,821.3 Tamil Nadu 13,932 13,920 9,192 9,718 14,806 16,735 37,930 40,373 1,849.8 1,694.0 2,673.8 3,341.4 1,035.5 1,169.3 5,559.1 6,204.7 Uttar Pradesh 45,507 40,732 6,987 7,089 24,329 26,961 76,823 74,782 1,233.4 1,702.2 2,535.0 2,790.7 913.5 1,432.0 4,681.9 5,924.9 West Bengal 20,182 18,663 11,762 11,949 18,572 21,124 50,516 51,736 40.3 51.6 3,419.9 3,683.1 1,634.8 1,768.5 5,095.0 5,503.2 X 1/ N.ng.l Fertilizer Project consumption of electricity is excluded from the 1974/75 figure and Included In the 1975/76 figure. Sources: CSO for state domestic product - CEA General Review, all India Statistics, 1974/75 and 1975/76 RESULTS OF REGRESSION ANALYSIS: ALL INDIA _ Approach 1 Approach 2 Approach 3 Standard Standard Standard Value Added _2 Value Added Time Error of Error of _2 Value Added Time Error of Coefficient R Coefficient Coefficient (3) (4) R Coefficient Coefficient (9) R2 (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) 1960/61-197(-'77 Industry 1.989 0.983 2.222 -0.010 0.402 0.017 0.983 0.974 0.042 0.004 0.899 Services 1 2.002 0.993 1.572 0.194 0.566 0.025 0.993 0.835 0.048 0.002 0.931 Agriculture - - - 2.857 - - 0.981 190/(,1-1968/69 Industry 2.216 0.980 1.077 0.062 0.226 0.012 0.996 0.974 0.067 0.003 0.989 H Services 2.169 0.987 0.546 0.079 0.295 0.014 0.998 0.835 0.065 0.002 0.994 Agriculture -/ _ - - - - 2.894 - - 0.989 1968/69-1976/77 Industry 1.379 0.967 1.491 -0.004 0.472 0.017 0.963 0.974 0.014 0.004 0.661 Services I/ 1.704 0.998 2.017 -0.014 0.249 0.011 0.998 0.835 0.038 0.002 0.973 Agriculture - - - - - - - 3.184 - - 0.948 1/ Coefficient relates electricity consumption to pumpset electrification RESULTS OF REGRESSION ANALYSIS: 1960/61-197 /76 Approach 1 AoDroach 2 Standard Standard Standard Value Added _2 Value Added Time Error of Error of _ Value Added Time Error of Coefficient R Coefficient Coefficient Q)_ (4) R2 Coefficient Coefficient (9) _R (1) (2) (3) (4) (5) (5) - (6) (7) (8) (10) (11) North Eastern Region - Industry 3.781 0.938 2.045 0.105 1.701 0.101 0.938 0.974 0.168 0.015 0.898 - Services 4.028 0.811 -1.358 0.256 0.282 0.013 0.934 0.835 0.163 0.010 0.953 - Agriculture - 4.815 0.860 Northern Region - Industry 2.076 0.756 0.124 0.912 2.269 0.105 0.753 0.974 0.523 0.014 0.489 - Services 1/ 2.275 0.957 -0.953 0.134 1.091 0.045 0.973 0.835 0.604 0.005 0.928 - Agriculture 4.455 0.972 Eastern Region - Industry 1.748 0.886 0.858 0.032 0.371 0.012 0.920 0.974 0.028 0.005 0.738 - Services 1/ 3.298 0.782 4.770 -0.036 2.187 0.052 0.775 0.835 0.055 0.012 0.599 - Agriculture 1.928 0.536 Western Region - Industry 2.042 0.991 2.200 -0.007 0.512 0.024 0.991 0.974 0.049 0.003 0.955 - Services 1/ 2.060 0.934 2.237 -0.008 2.688 0.117 0.930 0.835 0.053 0.006 0. 831 - Agriculture 2.589 0.977 Southern Region - Industry 1.784 0.970 1.796 -0.001 1.031 0.056 0.968 0.974 0.044 0.005 0.864 - Services 1/ 1.967 0.978 2.712 -0.034 1.098 0.050 0.977 0.835 0.051 0.004 0.924 - Agriculture 2.103 0.973 All India - Industry 2.045 0.985 2.277 -0.010 0.367 0.016 0.985 0.974 0.044 0.004 0.902 - Services 1/ 2.029 0.993 1.737 0.013 0.568 0.025 0.993 0.835 0.053 0.002 0.978 - Agriculture - 2.740 0.983 -(Industry 2/ 2.001 0.980 2.541 -0.024 0.484 0.021 0.981 0.974 0.043 0.004 0.883) 1/ Coefficient relates electricity consumption to pumpset electrification. 2/ Includes self-generation in industry in captive plants - 142 - ANNEX 11.1.1 OUTLAYS ON POWER IN RELATION TO THE TOTAL PLANS Power as a Percentage Power Sector Total Plan of the Total Plans Provision Expenditure Provision Expenditure Provision Expenditure First Plan 260 260 2219 2166 11.7 12.0 Second Plan 427 460 5025 4993 8.5 9.2 Third Plan 1039 1252 8449 8938 12.3 14.0 Annual Plans 1065 1223 6665 6879 16.0 17.8 Fourth Plan 2447 2931 16427 16273 14.9 18.0 Fifth Plan 7294 5716-1/ 39303 29571-1/ 18.6 19.3 Draft Plan 15750 - 69380 - 22.7 _ 1/ First four Years 2/ Estimated 3/ P.74 Fourth FFP = resources for the Annual Plans: original estimate Source: Various Plan Documents, Planning Commission ACTUAL PLAN EXPENDITURES: 1968/69-1978/79 (Rs. Millions) Union Union Investment-/ States Territories Center Total States Territories Center Total Price Index ------------- Current Prices ------------- --------- Constant 1970/71 Prices -------- 1968/69 2846.5 161.0 380.5 3388.0 3238.3 183.2 432.9 3854.4 87.9 (84.0) (4.8) (11.2) (100.0) 1969/70 3036.5 155.5 479.2 3671.2 3265.1 167.2 515.3 3947.5 93.0 (82.7) (4.2) (13.1) (100.0) 1970/71 3758.3 179.5 886.3 4824.1 3758.3 179.5 886.3 4824.1 100.0 (77.9) (3.7) (18.4) (100.0) 1971/72 4136.6 123.0 1030.1 5289.7 3795.0 112.8 945.0 4852.9 109.0 (78.2) (2.3) (19.5) (10,).n) 1972'73 4565.9 110.3 1352.4 6028.3 3798.6 91.8 1124.9 5015.2 120.2 (75.7) (1.8) (22.4) (100.0 1973/74 5320.3 173.6 1380.0 6873.9 3849.6 125.6 998.6 4973.9 138.2 4 (77.4) (2.5) (20.1) (100.0) L 1974/75 6577.0 149.0 939.6 7665.6 3799.5 866.1 542.8 4428.4 173.1 (85.8) (1.9) (12.3) (100.0) 1975/76 9664.1 161.6 1190.1 11015.8 5423.2 90.7 667.8 6181.7 178.2 (87.7) (1.5) (10.8) (100.0) 1976/77 12709.7 187.2 1637.1 14534.0 6933.8 102.1 893.1 7929.1 183.3 (87.4) (1.3) (11.3) (100.0) 1977/78 16524.0 249.0 2343.2 19116.2 8812.8 132.8 1249.7 10195.3 187.5 (estimated) (86.4) (1.3) (12.3) (100.0) 1978/79 19194.3 365.2 2612.1 22171.6 9748.2 185.5 1326.6 11260.3 196.9- (anticipated) (86.6) (1.6) (11.8) (100.0) Annual Average Growth Rate - - - - 10.9% (2.8%) 7.0% 10.0% 9.1% t 1/ The investment price index is from the World Bank Economic Report on India (for 1978, Table 6.113 the 1 index for 1978/79 is estimated assuming a 5 percent increase in prices over the previous year. Source: Planning Commission - 144 - ANNEX II.1.3 FINANCING THE PLANS: THE BURDEN ON THE CENTRE AND THE STATES (Rs billion) Fourth Plan Fifth Plan Centre Expenditure on Power 5.1 8.7-/ Total Resources for the Plan 87.9 3/ 205.9 -/ Power as a Percentage of Total 5.8% 4.2% States Expenditure on Power 21.6 4/ 65.8 1/ 4/ Total Resources for the Plan 73.7 3/ 187.2 2/ Power as a Percentage of Total 29.3% 35.1% Total Expenditure on Power 26.7 74.5 -/ Total Resources for the Plan 161.6 3/ 393.0 2/ Power as a Percentage of Total 16.5% 18.9% 1/ Including 1978/79, i.e. the first year of the Rolling Plan 2/ Provision in the Finalized Fifth Five Year Plan 3/ Estimated resources given in the Draft Fifth Five Year Plan 4/ Including Union Territories Source: Planning Commission and World Bank Analysis REVENUE AND OPERATING COSTS: 1969/70 - 1975/76 (Utilities Only: Rs Millions) Revenue Expenses Depreciation Interest 1 Total Surplus 1969/70 5,930 3,650 825 1,368 5,843 87 -Public 4,659 2,663 740 1,309 4,712 -63 -Private 1,271 987 85 59 1,131 140 1970/71 7,640 4,419 930 1,412 6,760 880 -Public 6,228 3,297 841 1,353 5,491 737 -Private 1,412 1,122 89 59 1,269 143 1971/72 7,671 4,880 1,084 1,461 7,425 246 -Public 6,139 3,666 993 1,400 6,059 80 -Private 1, 533 1,214 91 61 1,366 167 1972/73 8,951 5,801 1,252 1,652 8,705 246 -Public 7,248 4,436 1,161 1,587 7,184 64 -Private 1,703 1,365 91 65 1, 521 182 1973/74 10,030 6,922 1,272 1,899 10, 093 63 -Public 8,249 5,410 1,185 1,834 8, 429 -220 -Private 1,821 1,512 87 65 1,664 157 1974/75 13,288 9,566 1,478 1,866 12,910 378 -Public 10,964 7,602 1,392 1,796 10,790 174 -Private 2,324 1,964 86 70 2,120 204 1975/76 17,234 12,013 1,796 2,487 16,296 938 -Public 14,498 9,701 1,709 2,410 13,820 678 -Private 2,736 2,312 87 77 2,476 260 1/ Interest paid rather than owed. Source: GR CONSOLIDATED CAPITAL ACCOUN¶I OF THiE POWER SECTOR: ALL UJTILITIES (Rs Millions) Fixed Assets I/ Net Fixed Asset Formation, Trans- Trans- Generation mission Distribution Total Generation mission Distribution Total 196C/61 3675 806 2594 7075 221 44 167 4 32 1961/62 4349 1174 2940 8463 674 368 346 1388 1962/63 4734 1693 3051 9478 385 519 111 1015 1963/64 5490 1754 3556 10800 756 61 505 1322 1964/65 6015 2335 4500 12 850 525 581 944 2050 1965/66 7051 3045 5343 ]5439 1036 710 843 2589 1966/67 8941 3 379 6517 18837 1890 334 1174 3398 1967/68 10260 3727 7551 21538 1319 348 1034 2701 1968/69 10583 4956 9211 24750 323 1229 1660 3212 1969/70 11776 5254 10002 27032 1193 298 791 2282 1970/71 12504 5458 11776 29738 728 204 1774 2706 1971/72 13796 6218 1 366 7 33681 1292 760 1891 3943 1972/73 17278 7111 15578 39967 3482 893 1911 6286 1973/74 18154 7508 17593 43255 876 397 2015 32 88 1974/75 20624 8267 19514 48405 2470 759 1921 5150 Source: GR 1/ Leaving out general assets, intangible assets and special items from all assets. '-n PLAN PROVISIONS AND EXPENDITURE ON POWER (Utilities Only) (Rs Millions) Percentage Distribution Transmis- Transmis- sion and Rural sion and Rural Genera- Distribu- Electri- Genera- Distribu- Electri- tion tion fication Other Total tion tion fication Other Total First Plan - Provision n.a. n.a. 200 - 2,600 - - 7.7 - 100.0 - Actual 1,050 1,320 80 150 2,600 40.4 50.8 3.1 5.8 100.0 - Percentage n.a. n.a. n.a. n.a. 0.0 Excess Second Plan - Provision 2,350 1,170 750 - 4,270 55.0 27.4 17.6 - 100.0 - Actual 2,500 1,150 750 200 4,600 54.3 25.0 16.3 4.3 100.0 - Percentage 6.4 -1.7 0.0 n.a. 7.7 Excess Third Plan - Provision 7,120 2,220 1,050 - 10,390 68.5 21.4 10.1 - 100.0 - Actual 7,740 3,010 1,530 240 12,520 61.8 24.0 12.2 1.9 100.0 - Percentage 8.7 35.6 45.7 n.a. 20.5 Excess Annual Plans - Provision 6,440 2,730 1,480 - 10,650 60.5 25.6 13.9 - 100.0 ' - Actual 6,760 2,910 2,370 190 12,230 55.3 23.8 19.4 1.6 100.0 - Percentage 5.0 6.6 60.1 n.a. 14.8 Excess Fonrth Plan - Provision 12,550 7,210 4,450 260 24,470 51.3 29.5 18.2 1.1 100.0 - Actual 15,050 7,680 6,170 410 29,310 51.3 26.2 21.1 1.4 100.0 - Percentage 19.9 6.5 38.7 57.7 19.8 Excess Fifth Plan 3/ - Provision- 43,950 20,810 6,850 1,330 72,940 60.3 28.5 9.4 1.8 100.0 - Actuali' 35,770 15,080 5,240 1,070 57,160 62.6 26.4 9.2 1.9 100.0 - Percentage2/ 1.7 -32.7 -4.4 0.6 -2.0 Excess Rolling Plan - Provision 87,500 53,000 14,500 2,330 157,500 55.6 33.7 9.2 14.6 100.0 1/ Anticipated Expenditure for first four years. 2/ Five-fourth of anticipated expenditure over planned expenditure. 3/ From the Finalized Fifth Five Year Plan. n.a. = not available - = negligible. Source: Planning Commission ACTUAL PLAN EXPENDITURE ON THE POWER SECTOR (Rs millions) Absolute Amounts Percentage Distribution Trans- Investi- Trans- Investi- mission & Rural gations & mission & Rural gations & Five Year Plan and Distribu- Electri- Miscel- Distribut- Electri- Miscel- Annual Plans Generation tion fication laneous Total Generation tion fication laneous I Plan (1951/56) 1050.0 1320.0 80.0 150.0 2600.0 40.4 50.8 3.1 5.8 II Plan (1956/61) 2500.0 1150.0 750.0 200.0 4600.0 54.3 25.0 16.3 4.3 III Plan (1961/66) 7740.0 3013.0 1530.0 240.0 12523.0 61.8 24.0 12.2 1.9 1966/67 2400.0 832.0 734.0 72.0 4038.0 59.4 20.6 18.4 1.8 1967/68 2212.7 1032.2 747.9 66.0 4058.8 54.5 25.4 18.4 1.6 1968/69 2149.5 1042.4 887.1 47.3 4126.3 52.1 25.3 21.5 1.1 1969/70 2472.6 1330.9 853.4 46.5 4703.4 52.7 28.3 18.1 1.0 1970/71 2536.7 1258.9 1354.1 44.3 5194.0 48.8 24.2 26.1 0.9 1971/72 2864.3 1614.7 1466.4 97.5 6042.9 47.4 26.7 24.3 1.6 1 1972/73 3018.3 1640.0 1280.0 90.0 6028.3 50.1 27.2 21.2 1.5 1973/74 3900.0 2110.0 1210.0 120.0 7340.0 53.1 28.7 16.5 1.6 X 1974/75 5581.9 2353.7 1177.9 112.4 9225.9 60.5 25.5 12.8 1.2 1975/76 7688.5 3238.4 1196.4 188.6 12311.9 62.4 26.3 9.6 1.5 1976/77 9047.1 4238.4 1662.1 224.7 15172.3 9.6 27.9 11.0 1.5 1977/78 (anticipated) 10911.1 5164.1 1771.3 280.9 18127.4 60.2 28.5 9.8 1.5 Source: Planning Commission, Power and Energy Division THE DISTRIBUTION OF PLAN PROVISIONS IN THE FOURTH, FIFTH AND ROLLING PLANS (Rs Millions) Transmission Rural 1/ Percentage Generation & Distribution Electrification Other- Total Distribution Fourth Plan (1969/70-1973/74) States 9741 6455 2852 144 19191 78.4 (50.8) (33.6) (14.9) (0.8) (100.0) lnion Territories 255 443 95 25 818 3.3 (31.2) (54.2) (11.6) (3.1) (100.0) Centre 2551 318 4/ 1500 98 4467 18.3 (57.1) (7.1) (33.6) (2.2) (100.0) Total 12546 7216 4447 267 24476 100.0 (51.3) (29.5) (18.2) (1.1) (100.0) Fifth Plan (1974/75-1978/79) States 37227 18977 6746 749 63699 87.3 (58.4) (29.8) (10.6) (1.2) (100.0) ' Union Territories 65 788 107 27 988 1.4 (6.6) (79.8) (10.8) (2.7) (100.0) Centre 6652 1047 0 552 8252 11.3 (80.6) (12.7) (0.0) (6.7) (100.0) Total 43945 20813 6853 1329 72939 100.0 2R (60.2) (28.5) (9.4) (1.8) (100.0) Rolling PlIan - (1978/79-1982/83) States - 125800 79.9 Union Territories - 200 0.1 Centre - - - - 31500 20.0 4 Total 87500 -/ 53000 14500 2500 157500 100.0 (55.6) (33.7) (9.2) (1.6) (100.0) 1/ Surveys and Investigations 2/ Provisional 3/ Excludes investment in non-utilities 4/ Includes Rs 220 million of centrally sponsored schemes 5/ Including REC 6/ Excludes Rs 3000 million of institutional finance - = not available Source: PJanning Commission POWER GENERATION -- TARGETS AND ACHIEVEMENTS _ _ _ _ _Installed Gene ratiny _aRa4cit Financial Outlays (Utilities Only) Capacitv at Additions during Period Plan Actual Percentage _ eriod Ei.ti Percentage Investment Allocation Expanditure Excess Target Achievement Target Achievement _Shortfall Price Index (Rs Million) (Rs Million) (MW) (MW) (MW) (MW) (1970/71=100; Mid Year of Plan Period) First Plan (1951/52-1955/56) - 1,050 - 3,600 3,400 1,300 1,100 15.4 49.9 Second Plan (1956/57-1960/61) 2,350 2,500 6.4 6,900 5,650 3,500 2,250 35.7 55.7 Third Plan (1961/62-1965/66) 7,120 7,739 8.7 12,690 10,170 7,040 4,520 35.8 68.9 Annual Plans (1966/67-1968/69) 6,438 6,762 5.0 15,600 14,300 5,430 4,130 23.9 85.6 Fourth Plan (1969/70-1973/74) 12,546 15,050 20.0 23,000 18,880 9,260 4,590 50.4 109.0 2/ 1/ 5/ 35402/ 208 16502/ 724/ 5 7.05/ 183 Fifth Plan (1974/75-1978/79) 33,238- 35,770- 34.5- 35,420 26,080 16,540- 7,120- 57.0- 183.3 Rolling Plan (1978/79-1932/83) 87,500 - - 44,630 - 18,550 6-- 220.0- 1/ Expenditure anticipated for the first four years of the plan. 2/ As shown in the Draft Fi6th Five Year Plan. These figures were respectively revised upwards to Rs. 43,954 million and doxrwwards to 12,500 MW in the finalized Five Year Plan. 3/ Installed capacity at end of 1977/78. 4/ Achievement for 1974/75-1977/78. 5/ Percentage shortfall/excess of five-fourths of the achievement (1974/75-1977/7t) behind/ahead the original target (1974/75-1978/79). 6/ The Draft Rolling Plan gives a target end-period capacity of 44,626 MW and target additions of 18,500 MW; these figures are slightly inconsistent; the figure shown of 18,630 MW is the target additions required to meet the target capacity by the end of 1982/83. 7/ Assuming 5% inflation per annum after 1976/77. - Not available or not applicabl,3. Source: Various Plan Documents - 151 - ANNEX II,2.1 Page 1 of 7 POWER INVESTMENT PLANNING MODELS IN INDIA This annex briefly reviews four power investment planning models that have been produced for India. Investment planning models for electric power systems can be used to optimize: 1) generation and transmission expansion plans, 2) operating schedules, 3) plant maintenance schedules, 4) the utilization of a fixed amount of hydro energy potential, or 5) the allocation of coal from various mines to alternative thermal plants. Such models are set up as constrained optimization problems. The objective is to minimize system costs, i.e., the present worth of energy and capacity costs over the relevant time horizon, subject to various constraints on capacity and energy generated (both total and plant specific), transmission capacity and energy transmitted, and the reliability of supply.- Solutions are obtained through either marginal, simulation, or global analysis and rely heavily on linear, non-linear, or dynamic programming techniques. At the theoretical level, several attempts have been made to use formal planning models to determine optimal power system expansion plants for various 1/ See Ralph Turvey and Dennis Anderson, Electricity Economics, ch. 13, Baltimore: John Hopkins University Press, 1977 for a more complete discussion of investment planning models. 152 - ANNEX II.2.1 Page 2 of 7 regions in India- . These studies have a number of similarities. First, they all specify a model which minimizes power system costs for either some future time period -- 1971-85 for Gately -- or a future year -- 1979 or 1980 in the other studies -- subject to various system constraints. Second, all of the studies use linear programming techniques to determine solutions. Third, three of the four studies reviewed here are concerned with determining the optimal in- vestment plan for the Northern Region of India in 1979 or 1980 (only Gately's study is an exception). Finally, none of these studies explicitly consider the level of reliability at which electricity is to be supplied. From the point of view of this review, however, it is more interesting to consider the differences which exist between these studies. Some of these differences are found in : (1) the level of disaggregation of the study, (2) whether or not optimal operating schedules are determined, (3) the methods of dealing with dichotomous variables and non-constant costs, (4) their use of sen- sitivity analysis, (5) the extent to which the problem of assuring states' coop- eration within a region is addressed, and (6) the results obtained. 1/ M.V. Chakravarti, et. al., Optimization Techniques in Power System Planning in Northern Electricity Region, AEC monograph No. 2. 1971; Francis Gately, Investment Planning for the Electric Power Industry: A Mixed Integer Pro- gramming Approach, with Application to Southern India, Ph.D. dissertation, Princeton University, May 1971; Shishir K. Mukherjee, A Network Programming Approach for Investment Planning in Electric Power Systems: Case Study for Northern Region of India, Indian Institute of Management, Ahmedabad, Decem- ber 1974; and Supriya Lahiri, An Investment Programming Model for the Elec- tric Power Industry of Northern India, Ph.D. dissertation, University of Delhi, December 1975. _ 153 - ANNEX II.2.1 Page 3 of 7 Of the four studies reviewed here, those by Chakravarti, et. al., and Gately appear to be the least disaggregated. That is, these studies are con- cerned with determining power system investment plans that meet total regional demands. Thus there is no consideration given to meeting demands at various load centers within the region. In contrast, the studies by Mukherjee and Lahiri disaggregate regional demand into the demand at a number of load centers -- 43 in the former and 10 in the latter. Similarly, transmission of electricity is dealt with only on a very aggregate basis, if at all, in the study by Gately. Specifically, Gately considers only total transmission between states in a region (implicitly assuming there is only one transmission line), rather than considering various transmission units from supply centers to load centers as is done by Mukherjee and Lahiri. These studies also differ in terms of the consideration they give to deter- mining optimum operating schedules. The studies by Chakravarti and Mukherjee do not address this issue. Rather, they merely optimize the capacity investments necessary to meet peak demand in the target year. The models specified by Lahiri and Gately do allow optimum operating schedules to be determined. This is accom- plished by defining operating decision variables for each new or existing plant and for each mode of operation -- (1) base load, (2) normal peak and (3) super peak. The values of these operation variables, which are determined in the model 1/ In a number of ways, however, the analysis carried out in these studies is at a disaggregate level. For example, Chakravarti considers 8 categories of power plants, and 4 seasons of the year. Similarly, Gately considers (in his single state model) 3 possible hydrological years (normal, wet, and dry), 4 types of plants and 2 seasons (wet and dry). - 154 - ANNEX II.2.1 Page 4 of 7 indicate the MW output to be sustained by a particular type of plant in a given mode of operation. In addition, the Lahiri study determines the least cost method of transporting seven grades of coal from six mines (in Bihar, West Bengal, and Madhya Pradesh) to the various thermal plants in the Northern Region. Gately's model includes two innovations not found in the other models. First, hydro investment decision variables are dichotomous, i.e., zero-one rather than continuous. This is indicative of the fact that due to the natural limits to hydro resources, hydro plants cannot be duplicated at close to constant costs as to some extent thermal plants can be. In effect, this modification recognizes the fact that the actual decision to be made is which of a fixed number of potential hydro sites to develop, rather than how much hydro capacity should be developed. Second, this study allows for the fact that per unit capacity costs are likely to decrease over time as capacity increases, rather than remain constant as is typically assumed. This is accomplished by using a "fixed-charge" cost function. Such a function represents capacity cost as being the sum of a fixed cost component plus a variable cost component, which increases at a constant rate with capacity. The result is a capacity cost function characterized by decreasing average costs. Three of the planning studies attempt sensitivity analysis. That is, they investigate how the findings of their model (the optimal power system design) are affected by changes in key system parameters. For example, Gately allows the estimated growth rate of demand over the planning period to vary between 7.5% to 12.5% per year. In a similar fashion, he varies the discount rate between 10%- 15%, and considers three possible kinds of hydrological years (dry, normal, and wet). Mukherjee determines optimal investment plans when actual hydro capacity - 155 - ANNEX II.2.1 Page 5 of 7 is reduced to 50% of installed capacity (thus allowing for the possibility of a dry year). Lahiri analyzes how her results change when the prices of coal and nuclear investment costs vary. Specifically, she allows coal prices to in- crease by as much as 100% and nuclear construction costs to decrease by 20%. In addition, she analyzes the effects on her results of correcting market prices for distortions, i.e., using shadow or efficiency prices. Shadow wage rates for unskilled labor are varied between 0%-100% of market wages and the shadow exchange rate is varied between 110%-150% of the market exchange rate. Out of the four studies considered here, Gately's is the only one to explicitly consider the issue of regional cooperation between various states. His approach is game-theoretic and clearly this is one of his most interesting contributions.-/ The problem of how to ensure regional cooperation is appro- priately modeled as a n-person non-constant-sum game. Gately uses two game- theoretic concepts, the core and the von Neumann-Morgenste±n solution, to de- termine a set of side payments that would redistribute the benefits of cooperation between states in the Southern Region in such a way that all states are net gainers. Neither of these solution concepts determines one unique set of side payments that is in any sense optimal; but, they do indicate a range of values which might 1/ If tariffs for interstate transfers of electricity were set equal to appro- priately defined long run marginal costs, then this issue would, in principle, be largely resolved. However, the process of negotiating tariffs for the ex- change of power has been protracted; the positions the states have taken have reflected the net gains they expect from the resolution of the tariff problem; this process could itself be analyzed using game-theoretic concepts. _ 156 - ANNEX II.2.1 Page 6 of 7 facilitate regional cooperation. It is likely that such payments could be integrated with an appropriately defined tariff structure for interstate transfers of electricity. The actual results obtained in these studies are of interest because they provide an indication of the cost saving-/ that can result from regional inte- gration of power systems and because they demonstrate how widely optimal solutions can vary according to the specific planning model that is used. The Gately study provides some evidence on this first issue. He determines the optimal investment program for each state in the Southern Region assuming self- sufficiency and when there is regional cooperation. Two of the states, Tamil Nadu and Andhra Pradesh, realize cost savings through regional cooperation, while one "state" Kerala-Karnataka-/, incurs greater costs. Overall, system costs for the Southern Region between 1971-85 could be reduced by Rs 1530 million (or approximately 19%) by regional cooperation.-/ However, as discussed above, for this solution to be completed -- i.e., for each state to be a net gainer -- some type of side payment from Tamil Nadu and Andhra Pradesh to Kerala-Karnataka must be included. 1/ In all studies other than Gately's interest and depreciation costs are in- cluded among economic costs. Such costs actually represent a transfer of payment and thus really should not be included as economic costs. 2/ In his analysis, Gately treats Kerala-Karnataka as one state. 3/ Of course, the cost savings resulting from regional cooperation as compared to state self-sufficiency without a formalized planning program would be even greater. - 157 - ANNEX II.2.1 Page 7 of 7 The three models for the Northern Region produce different solutions for an optimal, least cost investment program. Lahiri's model, using market prices, suggests the capacity expansion program should be predominantly conventional thermal; using shadow prices, it suggests the program should be mostly hydro. Mukerjee's optimal investment program emphasizes nuclear development and hydro exploitation, with conventional thermal development coming much later on. The study by Chakravarti suggests roughly half the program should be conventional thermal, one quarter hydro and one quarter nuclear. That three studies may have such diverse results does not imply that modelling is futile. It reflects to some extent differences in analytical approach and no doubt differences in the data bases used. In practice, to apply any methodology to investment planning will undoubtedly require a major effort to ensure the realism of the data and a careful choice of methodology towards identifying the one most appropriate to the problems of the Indian situation. ELECTRICITY SUPPLY - rNSTALLED CAPACITY (MW) Dec. Dec. March March March March March Ma rch March March Mlarch March M arch 1950 1955 1961 1966 1969 1971 1972 1973 1974 1975 1976 1977 1978 UlJtilities - --_- - (a) By ownership -Public 628 1518 3297 7288 11335 13222 13769 14812 15253 16989 18815 20179 22596 -Private 1085 1177 1356 1739 1622 1487 1485 1469 1411 1327 1302 1290 1288 (b) By type of stations -Hydro 559 940 1917 4124 5907 6383 5612 6785 6965 7529 8464 9025 9977 -Conventional Thermal 1005 1547 2436 4417 6640 7508 7818 8468 8652 9753 10579 11433 12924 Nucl1e - - - - - 420 420 620 640 640 640 640 640 -Other- 149 208 300 486 410 398 404 428 407 394 434 :371 343 Utilities total 1713 2695 4653 9027 12957 14709 15'254 16281 16664 18316 20117 21469 23884 Non-Utilities 588 723 1001 1146 1339 1562 1635 1708 1792 2029 2132 2287 2200 Total 2301 3418 5654 10173 14296 16271 16889 17990 18456 20345 22249 23756 26084 1/ Diesel and gas turbine. Z/ The March 1978 figures refer to sets which have been rolled and are operational by that date. Data for previous years refer to sets which have been rolled, are operational and are commercially commissioned -- i.e., deemed to be revenue earning. The March t978 figure for all commercially commissioned sets is l',531° MW as opposed to the 26,084 MW shown here. Rolled and operational but not commercially commissioned sets in March 1977 had a capacity totalling 24,127 MW as opposed to the 23,756 MW shown. Thus the increase in capacity over 1977/78 may be reckoned as either 1,763 MW (rolled, operational and commercially commissioned) or 1,957 MW (rolled and operational). Source: GR LENCTIE: OF TRANSMISSION AND DISTRIBUTION LINES CONSTRUCTED (circuit km) Period 400 KV 220 KV 132/110 KV 66 KV & Below -/ Total Beginning First Plan (3/1951) - - 2708 26593 29271 End of First Plan (3/1956) - - 7376 59045 66421 End of Second Plan (3/1961) - 1099 12802 143986 157887 End of Third Plan (3/1966) - 3772 24718 262556 291046 End of Annual Plans (3/1969) - 10225 34056 372639 416920 End of Fourth Plan (3/1974) - 13932 45041 631604 690577 End of 1977/78 (3/1978) (Anticipated) 718 27881 80175 998708 1107482 L End of Rolling Plan 2/ (3/1983) (Planned) 16363 51355 127028 1269857 1464603 Annual Growth Rates Since the beginning of the First Plan (1951-1978) - - 13.47 14.4% 14.4% Since the end of the Second Plan (1961-1978) - 21.0% 11.4% 12.1% 12.1% As envisaged in the Working Group Report (1978-1982) 86.9% 13.0% 9.6% 4.9% 5.8% 1/ Excludes L.T. Lines 2/ T'hese figures reflect the physical targets set out in the working group report; corresponding figures are not available for the Draft Plan. Source: CR NUMBER OF VILLAGES ELECTRIFIED & IRRIGATION PUMPSETS/TUBEWELLS ENERGISED / 1950/51 1955/56 1960/61 1965/66 1968/69 1970171 1971/72 1972/73 1973 74 1974 75 1975/76 1976/ 77 1977/78 1 t) (Antici- (Target) Number of villages pated) electrified 3,100 7,300 21,700 45,100 73,700 104,900 122,100 139,200 156,900 173,500 185,800 202,800 222,900 320,000 Percentage of total villages electrified 0.5 1.3 3.8 8.0 13.0 18.7 21.6 24.5 27.2 30.1 32.3 35.2 38.7 55'6 Number of irrigation pumpsets/ tubewells (thousands) energized 21 56 199 513 1,089 1.629 1,901 21,85 2,426 2,614 2,792 3,029 3,341 5,300 1/ Numbers are as at the end of each year, e. g. the figure for 1950/51 is for March 31, 1951. The figures in the first row are rounded to the nearest hundred, while (as stated in the table) the number of irrigation pumpsets and tubewells energised is given to the nearest thousand. 2/ The targets in the Draft Plan are the electrification of one hundred thousand villages and two million pumpsets between April 1978 and March 1983. Source: GR - 161 - ANNEX II.3.4 Installed Generating Capacity at March 31, 1978 (MW) Conventional Region Thermal Nuclear Hydro Total Northern 3,359 220 3,243 6,822 Western 4,112 420 1,662 6,194 Southern 1,985 - 4,118 6,103 Eastern 3,601 - 885 4,486 North Eastern 204 - 69 273 Andaman and Nicobar Lakshadweep 6 - - 6 Non-Utility Capacity 2,200 2,200 15,467 640 9,977 26,084 Source: Ministry of Energy, Central Electricity Authority. - 162 - ANNEX II.3.5 TRANSMISSION AND DISTRIBUTION - 1974/75 - 1976/77 1974/75 1975/76 1976/77 ----- Circuit Kms at Year End ------- Northern Region - 33 KV and above 55516 56270 59251 - below 33 KV and above 500 V 179318 188459 247860 - at 500 V and below 213748 228870 244791 Western Region - 33 KV and above 47567 50582 55107 - below 33 KV and above 500 V 129506 135540 148231 - at 500 V and below 192135 21685- 238022 Southern Region - 33 KV and above 40922 42621 47240 - below 33 KV and above 500 V 162889 169196 179433 - at 500 V and below 411305 429429 456251 Eastern Region - 33 KV and above 31578 30763 32015 - below 33 KV and above 500 V 66722 73253 79965 - at 500 V and below 68632 73512 82208 North-Eastern Region - 33 KV and above 8121 8729 7328 - below 33 KV and above 500 V 6991 7731 7390 - at 500 V and below 6898 7135 8181 Total - 33 KV and above 183704 188965 200241 - below 33 KV and above 500 V 545426 574179 663579 - at 500 V and below 892716 955798 1029453 Source: CR - 163 - ANNEX II.3.6 THE INVESTMENT PROGRAM IN THE WORKING GROUP REPORT AND THE DRAFT PLAN: A COMPARISON: 1978/79-1982/83' Working Group Draft Percentage Reduction Report Plan Between (1) and (2) (1) (2) Proposed Outlays (Rs billions) - Generation 105.9 87.5 17.4 - Transmission and Distribution 78.3 53.0 32.3 - Rural Electrification 23.2 14.5 37.5 - Surveys, Investigation and Research 5.0 2.5 50.0 Total 212.4 157.5 25.8 Targets for Capacityj- (MW) - Hydro 5067 4680 7.6 - Conventional Thermal 16397 12935 21.1 - Nuclear 1160 925 20.3 Total 22624 18555 ]8.0 1/ Includes 325 MU' of additional capacity in non-utilities. Source: WGR - 164 - ANNEX II.3.7 Page 1 of 3 CAPACITY MARGINS AND OTHER PLANNING NORMS 1. In moving from a forecast of energy demand for a power system to the increments in capacity needed to meet the build up in power requirements, allowances must be made for transmission and distribution losses, the overall load factor, the incidence of planned, forced and partial outages, a margin for spinning reserve, the consumption of power station auxilliaries and the retirement and derating of existing capacity. In the last stage of actually planning the investment program project by project, it is also necessary to allow for the gradual build up in the load that can be met by new generation equipment. 2. While losses in India are between 19 and 20%, there is reason to expect these to fall because of higher voltage transmission, distribu- tion system reinforcement and efforts to curb theft in the next five years. Increased rural electrification may involve additional losses, offsetting these gains to some extent, but for planning purposes the Draft Rolling Plan assumes losses will be about 18% by 1982/83. This is fractionally lower than the 18.5% in the Tenth APS, and reaching the lower figure will involve a strong commitment to the physical targets in the transmission and distribution program. 1/ 3. The average load factor throughout India is about 61%. In the Tenth APS, this is assumed to improve to 63.5% because of measures designed to encourage off peak consumption. The margin for spinning reserve is taken as 5%, and auxiliaries for thermal power stations are assumed to be 10% as against 1/2% for hydro stations. The thermal figure is set so high to reflect the electricity used to handle and crush coal, and supply the power 1/ This is the average of load factors in different States and does not take into account the effects of interstate diversity. - 165 - ANNEX II.3.7 Page 2 of 3 station colonies. These two figures correspond roughly to the 6.35% margin for auxillaries -- both hydro and thermal -- assumed in the Draft Rolling Plan. 4. Outages are mainly a problem for thermal plants. Monitoring of past performance by the CEA suggests margins on thermal plant of 3.5% for planned outages, 18.5% for forced outages and 10% for partial outages may be appropriate for planning purposes. The Tenth APS argues for 10% for forced outages and 10% for planned outages without making any separate assumption about partial outages; though different in composition, the total allowances for forced and planned outages is about the same. It is generally agreed however that hydro availability during system peak can be much higher, the margin falling between say 10 and 15%, depending on the characteristics of the particular schemes in question. The Draft Plan makes no specific assumptions about either thermal or hydro availability during peak periods, but,assuming a 5% spinning reserve and a load factor of 63.5%, the Plan forecasts of capacity (42101 MW) and energy generated (160220.5 Gwh) by utilities in 1982/83, imply an overall margin for outages for both hydro and thermal of 28%. The ratio of installed capacity to peak load in the Tenth APS is 33.1%, which implies their margin for outages in hydro and thermal plant averages is 29.5%. This difference may be explained in part by different views about the efficiency of station operation and system management in the future, but this is not necessarily so; the APS assumed higher overall capacity by 1982/83 than the Planning Commission, and therefore a higher proportion of thermal plant, so the average level of efficiency might - 166 - ANNEX 11.3.7 Page 3 of 3 be lower for the Tenth APS than the Planning Commission anyway. 5. The rate assumed for retirement and derating of old capacity is also critical for forecasting the need for new capacity. The CEA has observed generally that 1% of capacity throughout the system is lost annually through retirement and derating. The Planning Commission argues that 0.5% should be retired each year,-! but makes no explicit allowance for derating capacity, which could well be between 0.3 and 0.5% of capacity. 1/ This is about 10%. So in 30 years the system capacity should increase about 17 times, and assuming plant has a 30 year life the 10% added in year 1 will have to be retired in year 31; it will then constitute one one-hundred-and-seventieth of total capacity or about 0.6%. - 167 - Annex II.3,8 INSTALLED CAPACITY THROUGHOUT INDIA - THE DRAFT PLAN FOR POWER (MW) Installed Planned Addition Between March 1978 March 1983 1978 and 1983 Hydro 9,977 14,655 4,678 Thermal 13,267 25,881 12,614 Nuclear 640 1,565 925 Total Utilities 23,884 42,101 18,217 Non-Utilities 2,200 2,525 325 All India 26,084 44,626 18,542 Source: The Draft Plan p. 166, and the Central Electricity Authority. - 168 - ANNEX II.3.9 ENERGY AND CAPACITY REQUIREMENTS (UTILITIES ONLY):1982/83 The Working The Draft Regression 1982/83 Group Report Plan Analysis Requirement at the Bus-bar (Gwh) 168392 2/ 150046 1/ 155615 Capacity Requiremnt (MW) 50500 2-/ 42100 V 46300 1987/88 Requirement at the Bus-bar (Gwh) 272055 2/ 239282 260839 Capacity Requirement (MW) 82600 -/ 64600 - 77600 4/ 1/ Taken equal to the Planning Commission/CEA Exercise that elaborated on forecast power requirements after the Draft Plan was published. 2/ As in the Tenth APS 3/ The test of the Plan refers to the need for between 20,000 and 25,000 MW of additional capacity between 1982/83 and 1987/88; the table uses 22500 MW. 4/ Applying the same load factor and margins as in 1982/83. 5/ Applying the same load factor and margins as in the Draft Plan. Sources: The Draft Plan and WGR - 169 - ANNEX II.3.10 The Shift Away From Hydro Electric Development (MW) 1/ Hydro Thermal Total Actual December 1950 559 1742 2301 (24.3) (75.7) (100.0) March 1969 5907 8389 14296 (41.3) (58.7) (100.0) March 1971 6383 9888 16271 (39.2) (60.8) (100.0) March 1978 9977 16107 26084 (38.2) (61.8) (100.0) Forecast: Draft Plan March 1983 14655 29975 44630 (32.8) (67.2) (100.0) 1/ Including nuclear Sources: WGR and the Draft Plan - 170 - ANNEX II.3-L1 TRANSMISSION AND DISTRIBUTION LOSSES FOR ALL INDIA: 1965/66-1975/76 (Gwh) 1965/66 1975/76 Net Generation 31355 74772 Total Consumption 2t 26735 60246 - Agricultural 1892 8721 - Other 24843 51525 Total Losses 4621 14526 Percentage Losses 14.7% 19.4% Memo Items Agricultural Generation 3846 17726 Other Generation 27509 57046 Agricultural Percentage Losses-t 50.8% 50.8% Other Percentage Losses- 9.7X 9.7% Agricultural Losses 1954 9005 Other Losses 2666 5521 1/ Utilities only (including energy purchased from non-utilities). 2/ Excludes self-generated electricity. 3/ These items show the level of losses for agriculture and other types of consumer that would have had to be realized, for the increase in agricultural load to be the only factor explaining the increase in overall losses (see text). Sources: GR and World Bank Analysis INTERNATIONAL COMPARISON OF TRANSMISSION AND DISTRIBUTION LOSSES AND OTHER SYSTEM CHARACTERISTICS: 1970 Investment in Transmission and Distribution Consumption Consumption as a Percentage 1/ l/Percentage per per of All Invest- Population- Area Consumption- Losses Capita Sq. Km ment in Power (Millions) ('000 80, Kms) (Twh) (Kwh) (Kwh) Belgium 9.7 31 27.7 5.6 2856 894 62.1 Federal Republic 61.2 248 220.7 5.9 3606 890 76.3 of Germany France 50.7 547 130.2 7.1 2568 238 43.3 Italy 53.6 301 107.0 8.5 1996 355 53.7 Norway 3.9 324 51.0 9.6 13077 157 33.3 Sweden 8.0 450 57.7 12.4 7213 128 35.3 Switzerland 6.2 41 28.6 10.1 4129 624 50.0 U. K. 55.4 244 215.4 7.6 3888 883 46.5 U.S.A. 205.1 9363 1510.4 7.9 7364 161 41.4 Canada 21.3 9976 176.2 11.3 8272 18 40.04-/ Japan 104.6 372 324.2 6.4 3099 872 49.9 India 548.1 3280 48.5-/ 17.3-/ 88 15 36.7-/ H 1/ yet of losses 2/ 1970/71 3/ Transmission and distribution expenditures in the Fourth Plan Period were 26.2% of all Plan expenditures on power including rural electrification, the figure was 47.2%; the tabulated figure is the arithmetic average of these two. 4/ Estimated Sources: Various Plans and "The Electricity Supply Industry',' OECD, Various Volumes. 1: ANNUAL PERCENTAGE CHANGES IN NDP AND TOTAL ELECTRICITY CONSUMED 20% *n/ I * S4it 15% 10% .05% 1961/62 1964/65 1969/70 1974/75 1976/77 Years = NDP .............. = Total Electricity Consumed World Bank -19922 II: ANNUAL PERCENTAGE CHANGES IN AGRICULTURAL AND INDUSTRIAL VALUE ADDED 20% __ 10% 4~~~~~~~~~~~~~~~~~~~~~~~~ 0 -2% 1961/62 1964/65 1969/70 1974/75 1976/77 Years Agricultrual Value Added * - - - - - - - = Industrial Value Added VVorld Bank-19923 III: ANNUAL PERCENTAGE CHANGES IN INDUSTRIAL VALUE ADDED AND ELECTRICITY CONSUMED BY INDUSTRY 25% 20% - 15% ~ ~ : *. . . . * S * a a * 15% 1961/62 1964/65 1969/70 1974/75 1976/77 Years =Industrial Value Added .-.-....------ = Electricity Consumed by Industry (Utiiities Only) World Bank-19924 INDIA - PRINCIPAL ORGANIZATIONS IN THE POWER SECTOR Governmenit Government of Itndia [ State Government | State Government linistries Department of Ministry of Energy, Departmnent of Department of and Departments Atomic Energy Department of Power/I rrigation Powver/Irrigation of Government (Policy and Power and Power Construction) (Policy) (Pclcy) (Policy) r E {Central Electricity| 1E Rural Arahoditycti Electrification D tPwtityngyt Corporatior p Monitoring and (Finance) Appraisal) Note; Thee ar 5RegionalElectricityBoardsand18StatRegeonal etrmicit National B dNatonal l Btn 21 1 Operating Atovver Thermal Hydro-Electric Electricity. Electricijty Agencies Authority P ovvrprto Pov\rer Board Board Note: Thee are 5 Regional Electricity Boards and 18 State Electricity Boards. World Batik -2011 1 The World Bank Headqtarters European Office Tokyo Office H 1818 H Street, N.W. 66, avenue d'Iena Kokusai Building Washington, P ^ ""A'3, U.S.A. 75116 Paris, France 1-1 Marunouchi 3-chome Telephone (202) 477-1234 Chiyoda-ku, Tokyo 100, Japan Cable Address INTBAFRAD WASHINGTONDC