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

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 21st December 4:00pm to 5:00 pm

Utilizable area was determined after Shading analysis.

Shading across the day on 21st December

Shading area from4.00PM 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 2013.

• 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 27.06.2014

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. 8000 sq mtr.

Installed Capacity:- 500 kWp

Solar Modules:- 1670 (300 W each)

Inverters :- 20Nos. of 20 kW (AC) each

Inverter Efficiency:- 98%

Nominal Generation:- 2200 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 11.08.14

By Hon’ble Minister for Urban Development

To formalize and channelize efforts,

Solar Policy was issued on 16.07.14.

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. 25.50 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 2015.

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 1 2 3 4 5 6 7 8 9 10Tariff 6.0 6.0 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

Year 11 12 13 14 15 16 17 18 19 20

Tariff offered 7.5 7.7 7.9 8.1 8.4 8.4 8.4 8.4 8.4 8.4 Annuity Factor 0.39 0.35 0.32 0.29 0.26 0.24 0.22 0.20 0.18 0.16

Year 21 22 23 24 25

Tariff offered 8.4 8.4 8.4 8.4 8.4

Annuity Factor 0.15 0.14 0.12 0.11 0.10

Levellised Tariff 6.94

TARIFF COMPARISON

0

5

10

15

20

25

6 6 6.17 6.52 6.89 7.28 7.69 8.138.360000000000018.360000000000018.360000000000018.360000000000018.36000000000001 6.48 7.14 7.88 8.68 9.57 10.56

11.64 12.83

14.15 15.59

17.19 18.96

20.90

Tariff of Solar Power Grid Tariff #

YEAR

TARIFFS IN DIFFERENT PPAs

CAPACITY Subsidy Levelised Tariff

(Rs./ kWhr)

Tender By

500 kWp 30% 6.94 SECI

250 kWp 30% 6.0 SECI

1,500 kWp 15% 6.73 DMRC

250 kWp 30% 5.845 SECI

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 LaneBarakhamba Road, New Delhi-110001

Thank You !!