Solar power plant EPC

Most solar contractors stop at the inverter. We build the switchyard, the bay extension and the line that carries the power away.

EPC · In short

Solar power plant EPC is the turnkey delivery of a photovoltaic plant and the infrastructure that evacuates its output. Enersys Engineers provides design, engineering, supply, installation, testing and commissioning of ground-mount and rooftop solar plants, together with switchyards and EHT cabling up to 220 kV, bay extensions, transmission lines and substations. The company completed a 13 MW plant using one of India’s first TOPCon panel installations and engineered a 17 MW plant.

Array designString & inverter sizingDC & AC cablingSwitchyardBay extensionEvacuation line

Plant scope

Detailed design and engineering — layout, string design, cable sizing, earthing and lightning protection
Module and mounting structure supply and installation
Inverter, transformer and HT switchgear supply and installation
DC and AC cabling, combiner boxes and terminations
Array earthing grid, module frame bonding and surge protection
Plant SCADA, weather station and remote monitoring
Testing, commissioning and performance verification

Evacuation scope

This is where a plant either earns or sits idle. Enersys delivers the whole evacuation chain rather than handing it to a second contractor.

Pooling substation and switchyard up to 220 kV
EHT cable systems up to 220 kV
Bay extension at the receiving substation
Transmission line to the interconnection point
ABT-compliant metering and communication to the load despatch centre

Design decisions that set the yield

Module technology — TOPCon adds a tunnel-oxide passivated rear contact, improving efficiency, temperature coefficient and low-light yield over PERC
Row pitch and tilt traded against land area and winter morning shading
String sizing kept inside the inverter MPPT window at both record cold open-circuit and record hot operating conditions
Cable sizing against current capacity, voltage drop and derating for ambient and grouping — the difference between a 1% and a 3% lifetime loss
Cleaning and soiling strategy appropriate to the site’s dust load

Our solar portfolio

Seven work packages that between them cover a solar plant from module to grid. Each is available within a turnkey contract or on its own.

Supply, installation, testing and commissioning
Design and detailed engineering
Maintenance and long-term O&M
Tower work
Transmission lines
Bay extension at the receiving substation
Substation and switchyard construction

Go green, go renewable — six work streams

Renewable generation is only useful once it reaches the grid. These six streams are deliberately chosen to cover the whole path.

Solar and wind power plants — design through commissioning
Switchyards up to 220 kV
EHT cable systems up to 220 kV
Earthing systems for plant and switchyard
Plant, area and security lighting
Interior electrification for control rooms and buildings

Delivered solar projects

13 MW solar plantDesign, engineering, execution and commissioning, with one of India’s first TOPCon panel installations (2024).

17 MW solar plantDesign and engineering, together with the design and manufacture of Odisha’s first 11 kV metering cubicle (2021).

Questions

Frequently asked

Does Enersys handle solar evacuation as well as the plant?

Yes. Switchyards and EHT cable systems up to 220 kV, bay extensions, transmission lines and substations are all in-house scope, so plant and evacuation are delivered under one contract and one programme.

What are TOPCon modules?

TOPCon — tunnel oxide passivated contact — is a high-efficiency cell architecture that reduces rear-surface recombination compared with conventional PERC, giving higher efficiency, a better temperature coefficient and stronger low-light performance. Enersys delivered a 13 MW plant on one of India’s first TOPCon installations.

Do you work on rooftop as well as ground-mount solar?

Yes — ground-mount, rooftop and captive installations, including the HT interface and metering that industrial rooftop plants require.

Is O&M available after commissioning?

Yes. Post-commissioning AMC covering module cleaning, string testing, inverter servicing, protection testing and generation reporting is offered as a continuing contract.

What usually goes with this

These are the adjacent scopes clients most often need alongside it.

Consultancy

Need solar epc? Tell us the scope.

Send the voltage, the capacity and the site. You will hear back from an engineer within one working day.

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