SOLAR POWER A SUSTAINABLE ENERGY SOURCE DMRC’s INTITATIVES Delhi Metro Rail Corporation

 Present Demand of around 150 MW.  Monthly Power Bill of approx Rs. 40 Cr.  Approx. 45% of Total expenditure. Power Demand is more in Summers due to increase in air conditioning load at stations and trains. DMRC’s POWER DEMAND

NEED FOR SOLAR POWER Electricity is crucial to operate METRO, Mostly Electricity is generated from fossil fuels like coal, gas, which generate Carbon dioxide adversely affecting the environment. To mitigate impact on environment, DMRC has decided to use all possible areas for installation of Solar Panels

October 2012 – DMRC signed MoU with GIZ. GIZ surveyed DMRC stations and Depots, and prepared Detailed Project Reports for Solar Power Plants at following three locations :- –Yamuna Bank Depot –Yamuna Bank station –Dwarka Sector – 21 Metro Station THE BEGINNING

Shading across the day Shading area from on 21 st December 4:00pm to 5:00 pm Utilizable area was determined after Shading analysis. Shading across the day on 21 st December Shading area from 4.00PM to 5.00PM DETAILED PROJECT REPORTS

Dwarka Sector – 21 Metro Station Yamuna Bank Metro Station Yamuna Bank Rail Depot …….DETAILED PROJECT REPORTS

GIZ introduced SECI (Solar Energy Corporation of India), a GOI Company to DMRC, and the MoU was signed in September SECI floated tenders for roof top Solar Plants and shortlisted M/s Sun Edison (SEI Green) for Dwarka Sector – 21 Metro Station. M.O.U. WITH SECI

Various business models were explored and financial calculations were done. SECI suggested two models:-  CAPEX Model  RESCO Model BUSINESS MODEL

Entire cost of Project to be borne by DMRC (i.e. 70%) and 30% subsidy from SECI / MNRE. CAPEX MODEL

RESCO (Renewable Energy Service Company) Model Project cost to be borne by the Developer identified by SECI and the developer will enter into a PPA (Power Purchase Agreement) for 25 years with DMRC at a mutually agreed tariff. 30% subsidy to the Developer, will be provided by SECI. No Capital expenditure by DMRC. RESCO MODEL

In order to mitigate the risk of extent of power generated by Solar radiation, DMRC preferred RESCO model. MODEL SELECTED

In Feb 2014, Power Purchase Agreement was signed with SEI Superior Pvt. Ltd. (subsidiary of Sun Edison) for Dwarka Sector – 21 Station. Solar plant is operational from and has generated approx. 3.0 Lakh Units in last Six Months. AGREEMENT WITH SUN EDISON

THE TEAM WORK

Total Area:-approx 12,800 sq. mtr Area used:- approx sq mtr. Installed Capacity:-500 kWp Solar Modules: (300 W each) Inverters :- 20Nos. of 20 kW (AC) each Inverter Efficiency:- 98% Nominal Generation: units per day Design Life of Plant:-25 years. SALIENT DETAILS OF PLANT

From Roof top Solar Panels, AC power has been transferred to Main Distribution Board at Ground level in the Substation. Solar plant is synchronized with Grid. Inverter has a feature to ensure that first the solar power is used, and additional requirement is taken from grid. This ensures that all the solar power generated is used. GRID – CONNECTED PLANT

Structures for solar modules placed without making a single hole on the roof. Structure designed to withstand a wind load of 200 kmph, which is rare in Delhi. Equipment to monitor sunlight, wind, temperature of site have been installed. Online monitoring of Power Generation (kW, kWh etc.) and weather parameters provided. SOME IMPORTANT FEATURES

FIRST 500 KWp SOLAR POWER PLANT IN DWARKA SECTOR-21 METRO STATION

ONLINE MONITORING

Structure Design was reviewed by DMRC Civil Structure Design Cell. Quality Control of Material and at Site Installation work. As per DMRC practice all protections for Overload, Lightening surges and Earthing have been provided. Plant Operation after EIG Clearance. CHECKS BY DMRC

PLANT DEDICATED TO NATION on By Hon’ble Minister for Urban Development

To formalize and channelize efforts, Solar Policy was issued on Target of 20 MWp in 3 years. DMRC SOLAR POLICY

Continuing with implementation of Solar Policy following installations have been recently completed:- (a)Anand Vihar Metro Station:- 115 kWp (b)Pragati Maidan Station:- 85 kWp (c)Metro Enclave:- 50 kWp TOTAL :-250 kWp SOLAR POWER PROJECTS IN DMRC

SOLAR PLANT AT ANAND VIHAR STATION

SOLAR PLANT AT PRAGATI MAIDAN STATION

SOLAR PLANT AT METRO ENCLAVE

DMRC has been entitled as implementing agency for National Solar Mission. Granted Central Financial Assistance of Rs Crores (15% of Benchmark Cost) for installing 20 MW. APPROVALS FROM M.N.R.E.

DMRC has awarded work for Solar Plant of 1.5 MWp capacity at Yamuna Bank Depot. Tenders for 7.0 MWp have been invited and are due for submission next week. For Balance Capacity, Tenders are likely to be invited in March WORK IN PROCESS

Bidders to Quote :- 1.Capital Cost, 2.Year – wise Tariff for 25 years. Lowest Offer identified based on Levellised Tariff with discounting rate of 11% per annum (based on SECI’s Formula). TENDER EVALUATION CRITERIA

TARIFF SHEET FOR DWARKA – 21 Year Tariff Annuity Factor Year Tariff offered Annuity Factor Year Tariff offered 8.4 Annuity Factor Levellised Tariff 6.94

TARIFF COMPARISON

TARIFFS IN DIFFERENT PPAs CAPACITYSubsidyLevelised Tariff (Rs./ kWhr) Tender By 500 kWp30%6.94SECI 250 kWp30%6.0SECI 1,500 kWp15%6.73DMRC 250 kWp30%5.845SECI

Salient Features of PPA Owner and Operator – Developer. Operation, Maintenance, Repairs, Spares for 25 years by developer User has option to Purchase the plant. During system disruptions due to roof repairs etc. interests of Developer safeguarded by deemed generation clause.

Penalties for Delay in payment. Arbitration clauses. Present taxes to be borne by developer. Any new taxes by user. Default Clause of Power Producer Default Clause of Purchaser Force Majeure conditions. Salient Features of PPA (Contd.)

 Use Curved Roofs of Stations,  Strength of existing Structures,  Orientation not suited for Solar Power,  Power Block in Operational areas,  Developers lack experience with Metro,  Assimilation of Technology Upgrades in PPA.  Reduction in CFA from 30 % to 15%. CHALLENGES

This is just a beginning !!!

DMRC Ltd. Metro Bhawan,Fire Brigade Lane Barakhamba Road, New Delhi Thank You !!