Harnessing Solar Energy by Utilizing Rooftop Space of Railway Buildings

Solar Energy Corporation of India4th Floor, Tower 1, NBCC plaza

Sector V, Pushp ViharSaket, New Delhi-110017

SECI- Inception and Objectives

Apr 18, 2023 SOLAR ENERGY CORPORATION OF INDIA 2

OUR MANDATE:

To be the implementing agency

for meeting the National Solar

Mission objectives

To plan and execute an

integrated programme on

development and deployment of

solar energy technologies to

achieve commercialization;

To own, operate and manage,

both grid-connected & off-grid

power stations;

To promote R&D in Solar

OUR MANDATE:

To be the implementing agency

for meeting the National Solar

Mission objectives

To plan and execute an

integrated programme on

development and deployment of

solar energy technologies to

achieve commercialization;

To own, operate and manage,

both grid-connected & off-grid

power stations;

To promote R&D in Solar

SECI Activities : Ongoing

As part of the Mission activities SECI has taken up the following projects/ activities.

750 MW Grid connected solar power plants under JNNSM Phase II

4000 MW Ultra Mega Solar Power Plant in Sambhar, Rajasthan

Pilot CSP Projects of around 100 MW

Implementation of Grid Connected Solar Roof-Top scheme

Development and dissemination of solar home lighting systems/ solar lanterns

Solar Thermal installations for water/air heating

Solar Mini/Micro Grids/street lights etc.

R&D Projects

Broad mandate : Implementation & Facilitate various activities of the JNNSM.

April 18, 2023 3SECI

Growth of Solar Capacity (MW)State MWp %Gujarat 860.4 41.0%Rajasthan 656.15 31.2%Maharashtra 207.25 9.9%Madhya Pradesh 162.315 7.7%Andhra Pradesh 68.9 3.3%Uttar Pradesh 17.375 0.8%Tamil Nadu 28.18 1.3%Jharkhand 16 0.8%Karnataka 24 1.1%Orissa 15.5 0.7%Punjab 9.325 0.4%Haryana 7.8 0.4%West Bengal 7.05 0.3%A & N Island 5.1 0.2%Uttarakhand 5.05 0.2%Chhattisgarh 7 0.3%Delhi 2.6 0.1%Lakshadweep 0.8 0.0%

Roof top PV-Towards grid parity

Source:KPMG

By 2017 roof top solar power cost will reach the grid parity.

Benefits of Roof top PV• On national level, reduces requirement of

land for addition of solar capacities.

• For consumers, it – Reduces the dependency on grid power.

– Mitigates diesel generator dependency.

– Long term reliable power source.

• For Discoms, it reduces – Day Peak load Demand

– T&D and conversion losses as power is consumed

at the point of generation.

• Most suitable for commercial establishments– Max generation during peak usage time.

– Solar power cost is close to the commercial power

cost.

SECI’s Grid Connected Rooftop Scheme

Salient Features•MNRE launched a pilot scheme in year 2013 for grid connected rooftop PV

power projects –being implemented by SECI

•The scheme allows system size from 100 kW to 500 kW – Aggregation of capacity from smaller roofs is allowed.

•30% of the cost would be provided as subsidy and 70% to be met by the

consumer

•Systems are to be grid connected and without battery back up

•Mostly in-house/captive consumption and to replace diesel generation

•Surplus solar power to be fed to the grid

•Cities across India being covered under the scheme for wider

participation/promotion

•Developers selected through a competitive process

Implementation• Under the scheme SECI

– Allocates capacity for each city/State in consultation with MNRE/SNAs

– Verify project proposals w.r.t. technical specifications and release the sanction for subsidy which is linked to performance up to 2 years

– Release initial subsidy on successful commissions as per technical specifications (20%)

– Release 5 % subsidy each at the end of 1st and 2nd year of successful maintenance of the project

– Help developers for identification of projects through dissemination workshops and to discuss any issues with concern authorities

9

Palatana (1)

Kolkata (2)

Bhubaneswar (1)

Chennai (6)

Coimbatore (1.5)

Bangalore (3)

Mumbai (1)

Pune (3)

Gwalior (1)

Chandigarh (1)

Jaipur (3.75)

New Delhi (5)

Gurgaon (2.5) Noida/Greater Noida (3.5)

Raipur (2.05)

Hyderabad (4)

Implementing Rooftop projects with 30% subsidy from MNRE

100-500kW capacity projects being set up in select cities

Phase I: 5.5 MW (4 cities)Phase II: 11.3 MW (6 cities)Phase III: 10 MW (9 cities)

SECI’s Ongoing Scheme of Rooftop PV(Covering 37 Cities of India)

Apr 18, 2023 SOLAR ENERGY CORPORATION OF INDIA 11

LegendPhase IPhase IIPhase IIIPhase IVMultiple phasesCapacity in MW() Madurai (0.5)

Vijaywada (0.5)Tirupati (0.5)

Nagpur (0.5)

Nasik (0.5)

Bhopal (1)

Panchkula (1)

Patna (2)

Ranchi (2)

Mohali (1)

Amritsar (0.5)Ludhiana (0.5)

Gandhinagar (1)Vadodara (0.5)

Surat (0.5)

Mysore (1)

Durgapur (1)

Faridabad(0.5)

Grid Connected Rooftop Scheme of SECI

• So far 27 MW is allotted under three Phases of the Scheme

• Around 40 MW will be allotted in Phase IV of the scheme– Benchmark cost is Rs. 90/ Wp for PPP model (RESCO) ; on which 30% capital

subsidy will be available from MNRE

– Tariff based competitive bidding is experimented for RESCO model in Phase IV of the scheme which lead to solar tariff in general in range of Rs. 6.0 to Rs. 6.745 (Cap at Rs.6.75/kWh)

– In Capex model Average price is Rs. 75/Wp; Breakeven 5 to 6 years

Indian Railways - Rooftop Solar PV Potential

• Roofs of Railway Stations

• (On going discussions for rooftop

SPV systems at New Delhi, Anand

Vihar, Katra Railway Stations etc)

• Railway Workshops,

• Loco sheds,

• Coach factories,

• Residential Railway Colonies,

• Office buildings,

• Hospitals etc.

Energy Utilization Pattern In Indian Railways

•Electricity consumption: 16.6 billion units (14.16 billion units Traction, 2.46 billion unit for non traction) ~`~ 2500MW ~~ 3800 MW (peak) , (22 billion unit , 5000 MW XII Plan projected)

•Electricity consumption(Non Traction) - workshop 25%, station and service building 35%, pumping 10%, domestic 30%

•Share in total energy Consumption (NATIONAL) - 2 %

•Share in total energy consumption of transport sector - 5 % ( 77 % diesel, 23 % electricity)

•Share of energy in total operating cost of IR – 24% (18,000 Cr, 8700 Cr for Electricity) (87 % traction, 13 % non- traction)

Energy Usage

FOR

•Rolling stock manufacture, maintenance and disposal

•Train operation.

•Infrastructure construction and maintenance

•Administration of transport business.

•Energy production and trade.

TIME • 24 X 7 X 365

THROUGHTHROUGH• GRID Power+ DG Set + Renewable (very Low)

Why Solar in Railways• Railway sector growth 8-9%• Progressive shift of freight traffic to railway• 80% of rail freight and 60% passenger traffic on electric

energy by 2030• Electricity demand to go 100 billion kWh by 2030 for railway

sector alone in India• The current trends indicates constraints in indigenous

availability of conventional energy resources• World trend to achieve min. 25% through RE by 2020 in

transport sector leader Germany, Sweden, USA• Fuel diversity• No space constraint

Railways Initiatives • Indian Railways Vision 2020-At least 10% of its total energy to come

from renewable sources such as solar power, wind, and biomass etc.” (500MW)

• Policy of solar based system for D and E class station, emergency light for all class of station(sep,12)

• Achievement so far • 10.50 MW Wind• 4.50 MW solar• 4.69 MW solar PV Plant in progress

Railways Initiatives• Solarization of unmanned Railway Crossings– For Optical fiber and Integrated Battery bank system– The system size ranges from 1400 Wp to 3500 Wp– More than 150 systems have been installed nation

wide– The zone covered are Eastern, Nothern railway,

Western railway and West central

• Installation of 500 kWp size Rooftop at Katra Railway station in J&K within 3 to 4 months

• Decided to take up rooftop PV projects at railway stations, workshops, loco sheds, hospitals ,offices and residential colonies etc Under Phase I of 500 MW across the country

• Railways to share the details of rooftop space • SECI and IR may work together on a special scheme

dedicated to Railways (in consultation with MNRE for CFA) and implemented through various business models including PPP mode

• Major consumption by IR at respective locations and excess power only to flow to grid

• Activity start up locations are New Delhi Railway station, Katra Railway Station, workshops at Dahod , Bhusaval, Chittaranjan locomotive works and Kanchanpara,

• Innovative Pilot project of providing rooftop PV on one Non-AC railway coach with thin film technology

• SECI shall provide complete solution from Conceptualization, estimation, tendering, Implementation, monitoring, handholding and initial O&M support for these Solar Power Projects and activities for Indian Railways

Criterion for Roof Selection for SPV Systems• In the ideal case SPV system should be mounted facing

towards South direction

• Roofs should have longer life and better load-bearing capacity

• Structure should be strong enough to bear the load of the PV panels and the associate mounting systems

• Roofs may be identified in the initial phase where commercial tariff is high and there is better promotional prospect

Key ChallengesRoof Assessment• Detailed structural analysis and wind load assessment is required

to be carried out for realistic SPV design and engineering

• It has been seen that most of the roofs comprise Asbestos Cement Sheets which are brittle in nature and not generally recommended for SPV systems

• SPV systems should be installed on the roofs with metallic tops for longer life and better load-bearing capacity

THANK YOU