Feasibility of Solar Project with Open Access in Maharashtra
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The document outlines the feasibility of a solar PV project for third-party sale in Maharashtra, focusing on the eligibility for open access to the distribution system under the Maharashtra Electricity Regulatory Commission's regulations. It provides calculations for open access charges across various consumer categories and summarizes financial parameters for a proposed 10 MW solar project, including potential savings for consumers over 25 years based on different solar tariff scenarios. Key figures include generation output, project costs, tariffs, and the impact of transmission and wheeling charges.
Feasibility of Solar Project with Open Access in Maharashtra
- 1. Solar Power Purchase Services Gensol Engineering Pvt Ltd
- 4. Enabling Policy in Maharashtra Maharashtra Electricity Regulatory Commission (Distribution Open Access) Regulations, 2014. 3.1 Subject to the provisions of these Regulations, a consumer having contract demand of 1 MW and above and where the minimum power to be made available for Open Access at any time is 1 MW and above, shall be eligible for seeking Open Access to the distribution system of such Distribution Licensee for obtaining supply of electricity from a Generating Company or Captive Power Plant or from a Licensee other than such Distribution Licensee or through the Power Exchange : Provided that the necessary conditionality mentioned in Regulation 3.1 about minimum power to be made available for Open Access at any time is 1 MW and above, for being eligible for seeking Open Access shall not be applicable for Open Access getting supply from a Renewable Energy generating plant identified as ‘Non firm power’ under MERC (Terms and conditions for determination of RE Tariff) Regulations, 2010, as amended from time to time
- 5. Consumer Categories and Tariffs Consumer Category Tariff (Rs./kWh ) Source HT II - Commercial Express Feeder 11.40 ANNEXURE II Revenue from revised Tariffs effective from 1 April, 2017 http://www.mercindia.org.in/pdf/Order%2058%2042/Order- 48%20of%202016-03112016.pdf HT II - Commercial Non-express Feeder 11.40 HT I - (Industrial Express Feeder) 7.07 HT I - (Industrial Non-express Feeder) 7.07
- 6. Calculation of Open Access Charges: HT II - Commercial Non-Express Feeder Units Notations Charges/losses kWh Price @ Generator Bus Rs/kWh A 5.00 Consumer category HT II - Commercial Non-Express Feeder Select Voltage Level kV 33 Group Captive/third party Thiry party Energy injected into transmission system kWh B 1,600,000 Transmission Charge Rs/kWh C 0.71 Transmission Losses % D 3.89% 62240 Energy injected into distribution system kWh E 1,537,760 Wheeling charges Rs/kWh F 0.09 Wheeling losses % G 6% 92266 Cross subsidy surcharge Rs/kWh CSS 0.68 Additional surcharge Rs/kWh AS 1.11 Units Injected at Buyer's Bus kWh H 1,445,494 Open access charges Rs / kWh 3.85
- 7. Calculation of Open Access Charges: HT II - Commercial Express Feeder Units Notations Charges/losses kWh Price @ Generator Bus Rs/kWh A 5.00 Consumer category HT II - Commercial Express Feeder Select Voltage Level kV 33 Group Captive/third party Thiry party Energy injected into transmission system kWh B 1,600,000 Transmission Charge Rs/kWh C 0.71 Transmission Losses % D 3.89% 62240 Energy injected into distribution system kWh E 1,537,760 Wheeling charges Rs/kWh F 0.09 Wheeling losses % G 6% 92266 Cross subsidy surcharge Rs/kWh CSS 0.71 Additional surcharge Rs/kWh AS 1.11 Units Injected at Buyer's Bus kWh H 1,445,494 Open access charges Rs / kWh 3.88
- 8. Calculation of Open Access Charges: HT II - Industrial Non Express Feeder Units Notations Charges/losses kWh Price @ Generator Bus Rs/kWh A 5.00 Consumer category HT II - Industrial Non Express Feeder Select Voltage Level kV 33 Group Captive/third party Thiry party Energy injected into transmission system kWh B 1,600,000 Transmission Charge Rs/kWh C 0.71 Transmission Losses % D 3.89% 62240 Energy injected into distribution system kWh E 1,537,760 Wheeling charges Rs/kWh F 0.09 Wheeling losses % G 6% 92266 Cross subsidy surcharge Rs/kWh CSS 0.44 Additional surcharge Rs/kWh AS 1.11 Units Injected at Buyer's Bus kWh H 1,445,494 Open access charges Rs / kWh 3.60
- 9. Calculation of Open Access Charges: HT II - Industrial Express Feeder Units Notations Charges/losses kWh Price @ Generator Bus Rs/kWh A 5.00 Consumer category HT II - Industrial Express Feeder Select Voltage Level kV 33 Group Captive/third party Thiry party Energy injected into transmission system kWh B 1,600,000 Transmission Charge Rs/kWh C 0.71 Transmission Losses % D 3.89% 62240 Energy injected into distribution system kWh E 1,537,760 Wheeling charges Rs/kWh F 0.09 Wheeling losses % G 6% 92266 Cross subsidy surcharge Rs/kWh CSS 0.48 Additional surcharge Rs/kWh AS 1.11 Units Injected at Buyer's Bus kWh H 1,445,494 Open access charges Rs / kWh 3.64
- 11. Project Economics of a 10 MW Project DASHBOARD AD Benefet Availed NO Project Execution Mode PMC Area required per MW (acres) 4.5 Land cost per acre 0.045 Land Cost (Rs in Cr) 2.025 Permitting and commissioning costs (Rs in Cr) 0.02 EPC Cost per MWp (Rs in Cr) 3.8 EPC Cost (Rs in Cr) 38.20 USD/INR 66 AC Capacity (MW) 10 DC Overloading 20.0% DC Capacity (MW) 12.00 Generation (MWh) 21000 Total transmission losses 0.10% Generation net of transmission losses (MWh) 20979 PLF 23.97% Interest rate 11.25% Refinancing after 1 year of COD No Debt 70% Equity 30% Tariff 4.5000 Equity IRR 18.05% PIRR 13.28%
- 12. Possible Solar Tariffs for Consumer Categories Consumer Category Grid Tariff (Rs./kWh) Open Access Charges (Rs./kWh) Ceiling of Possible Solar Tariff (Rs./kWh) HT II - Commercial Express Feeder 11.4 3.88 7.52 HT II - Commercial Non-express Feeder 11.4 3.85 7.55 HT I - (Industrial Express Feeder) 7.07 3.64 3.43 HT I - (Industrial Non-express Feeder) 7.07 3.60 3.47
- 13. Savings for Consumer Categories at Rs 4.5/kWh of Solar Tariff Consumer Category Final Landed Tariff (Rs./kWh) a = b + c Open Access Charges (Rs./kWh) b Solar Tariff (Rs./kWh) c Cumulative Savings for 25 years (Rs in Cr) NPV of Savings @10% discount rate (Rs in Cr) HT II - Commercial Express Feeder 8.38 3.88 4.5 459.93 119.13 HT II - Commercial Non- express Feeder 8.35 3.85 4.5 462.08 119.83 HT I - (Industrial Express Feeder) 8.14 3.64 4.5 N.A N.A HT I - (Industrial Non- express Feeder) 8.10 3.60 4.5 N.A N.A
- 14. Cross Subsidy Surcharges EHV Consumers HT Consumers HT Consumers (66kV & above) (33kV) (22/11 kV) Industry HT I - (Industrial Express Feeder) 1.9 1.9 1.9 HT I - (Industrial Non-express Feeder) 1.77 1.77 1.77 Commercial HT II - Commercial Express Feeder 2.85 2.85 2.85 HT II - Commercial Non-express Feeder 2.71 2.71 2.71 Table 8-36: http://www.mercindia.org.in/pdf/Order%2058%2042/Order-48%20of%202016-03112016.pdf