Commercial and industrial solar projects are a different scale of decision from a residential rooftop — larger investment, more complex engineering, and financial considerations like accelerated depreciation that residential systems don't involve. Here are 7 solar EPC companies serving Chennai's commercial and industrial segment, what each is generally known for, and what to actually check before signing with any of them.
Arka Solar Energy
We deliver end-to-end EPC services — engineering, procurement, and construction — for commercial and industrial rooftop solar in Chennai, with subsidy and TANGEDCO net-metering coordination handled as a core part of the scope, not an afterthought. Our installations use corrosion-resistant mounting hardware suited to Chennai's coastal humidity, and we provide itemized quotes with warranty terms specified in writing. See our full EPC services page for details.
Tata Power Solar Systems Ltd.
A nationally established name in India's solar industry with a long history in both manufacturing and EPC project delivery. Tata Power Solar serves commercial and industrial clients across the country, including Tamil Nadu, and is often considered for larger-scale projects where brand backing and manufacturing integration matter to the buyer.
Heliostrom Renewable Energy Solutions
A Chennai-active solar company that has publicized a substantial base of completed rooftop projects and positions itself around subsidy support for both residential and commercial customers under government schemes.
Ksquare Energy
A Chennai-based solar company operating since the mid-2010s, with a stated focus on serving a large volume of residential and commercial customers across South India.
SolarSquare Energy
A pan-India solar company with installed capacity listed on the PM Surya Ghar national portal, serving both residential and commercial segments across multiple cities, including Chennai.
JV Solar Energy Pvt Ltd
A Chennai and Tamil Nadu-focused EPC company with close to a decade of operating history, covering rooftop, industrial, commercial, and ground-mounted solar power plants as well as solar water pump projects across the state.
Evolve Energy Group
A Chennai-based EPC company (based in Ambattur) with a stated focus on commercial and industrial solar clients, offering end-to-end project delivery from design through commissioning.
What to Actually Check Before Choosing an EPC Partner
Whichever company you're evaluating — from this list or elsewhere — the same due-diligence questions apply to a commercial or industrial project as they do to residential, with a few added for scale:
- Relevant project experience — specifically commercial/industrial, not just residential rooftop volume
- MNRE empanelment and BIS/IEC-compliant equipment — non-negotiable for a large investment
- Itemized quote covering engineering, equipment, construction, subsidy/net-metering liaison, and any tax documentation support separately
- Separate warranty terms for panels, inverters, and workmanship — see our full breakdown of what each warranty actually covers
- References from comparable-scale projects, ideally ones you can actually visit or call
Good to know: This list reflects publicly available information about each company at the time of writing. Company scale, service areas, and offerings change, so verify current details, certifications, and references directly with any company before making a decision — and always compare at least 2–3 itemized quotes rather than choosing based on a single conversation.
Frequently Asked Questions
What makes an EPC company suitable for commercial or industrial solar, specifically?
Commercial and industrial projects involve larger loads, more complex structural and electrical design, and often accelerated depreciation and tax considerations that residential projects don't. Look for an EPC company with a track record specifically in commercial or industrial-scale installations, not just residential rooftop experience.
Should I always choose the largest or most established EPC company?
Not necessarily. Larger companies often bring more resources and track record, but smaller, locally focused EPC firms can offer more responsive service and competitive pricing for mid-sized projects. Evaluate based on relevant project experience, transparent quoting, and warranty terms rather than company size alone.
How many EPC quotes should a business get before choosing?
2 to 3 itemized quotes is a reasonable standard for a commercial or industrial project, given the larger investment involved. This lets you compare equipment specification, warranty terms, and included scope (like subsidy or depreciation documentation support) rather than just the bottom-line price.
Do EPC companies handle depreciation and tax documentation for commercial solar?
Some do, as part of a full-scope commercial EPC engagement, but this varies by company. Confirm explicitly whether accelerated depreciation documentation and other tax-related paperwork are included in your EPC contract's scope of work, since this is a meaningful part of the financial case for commercial solar.
Planning a commercial or industrial solar project in Chennai? Get a free site assessment and itemized EPC quote from Arka Solar Energy — no obligation.