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

2. DMRC’s POWER DEMAND 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.

3. 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

4. THE BEGINNING 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

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

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

7. M.O.U. WITH SECI
GIZ introduced SECI (Solar Energy Corporation of India), a GOI Company to DMRC, and the MoU was signed in September 2013.
SECI floated tenders for roof top Solar Plants and shortlisted M/s Sun Edison (SEI Green) for Dwarka Sector – 21 Metro Station.

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

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

10. RESCO 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.

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

12. AGREEMENT WITH SUN EDISON
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.

13. THE TEAM WORK

14. SALIENT DETAILS OF PLANT
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.
Max. Generation touched is 357 kWp. Caters to 50% of Power required during SUMMERS and 80% of the Power required during WINTERS.

15. GRID – CONNECTED 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.

16. SOME IMPORTANT FEATURES
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.

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

18. ONLINE MONITORING

19. CHECKS BY DMRC
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.

20. PLANT DEDICATED TO NATION on 11.08.14
By Hon’ble Minister for Urban Development

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

22. SOLAR POWER PROJECTS IN DMRC
Continuing with implementation of Solar Policy following installations have been recently completed:-
Anand Vihar Metro Station:- 115 kWp
Pragati Maidan Station: kWp
Metro Enclave: kWp
TOTAL : kWp

23. SOLAR PLANT AT ANAND VIHAR STATION

24. SOLAR PLANT AT PRAGATI MAIDAN STATION

25. SOLAR PLANT AT METRO ENCLAVE

26. APPROVALS FROM M.N.R.E.
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.

27. WORK IN PROCESS
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 2015.

28. TENDER EVALUATION CRITERIA
Bidders to Quote :-
Capital Cost,
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).

29. TARIFF SHEET FOR DWARKA – 21
Year 1 2 3 4 5 6 7 8 9 10
Tariff
6.0
6.2
6.3
6.5
6.7
6.9
7.1
7.3
Annuity Factor
1.00
0.91
0.83
0.75
0.68
0.62
0.56
0.51
0.47
0.42 11 12 13 14 15 16 17 18 19 20
Tariff offered
7.5
7.7
7.9
8.1
8.4
0.39
0.35
0.32
0.29
0.26
0.24
0.22
0.20
0.18
0.16 21 22 23 24 25
0.15
0.14
0.12
0.11
0.10
Levellised Tariff
6.94
Discount Rate is 10%. Current DMRC Tariff:- Rs (Average)

30. TARIFF COMPARISON
Current DMRC Tariff:- Rs (Average) Grid Tariff 5% based on past Trends of 10 years.

31. TARIFFS IN DIFFERENT PPAs
CAPACITY
Subsidy
Levelised Tariff
(Rs./ kWhr)
Tender By
500 kWp
30%
6.94
SECI
250 kWp
6.0
1,500 kWp
15%
6.73
DMRC
5.845

32. 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.

33. Salient Features of PPA (Contd.)
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.

34. CHALLENGES 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%.

35. This is just a beginning !!!

36. Thank You !! DMRC Ltd. Metro Bhawan,Fire Brigade Lane
January, 2013
Thank You !!
DMRC Ltd.
Metro Bhawan,Fire Brigade Lane
Barakhamba Road, New Delhi