Chennai homeowners have more solar options than ever. The PM Surya Ghar Muft Bijli Yojana pays up to ₹78,000 towards a home system, and dozens of installers now compete for rooftops in the city. That makes choosing harder, not easier. This guide covers companies that actively install residential rooftop solar in Chennai, what each says it offers, and how to compare them on the things that decide whether your system performs for 25 years.
How we picked these companies
Every company here installs rooftop solar for homes in Chennai. We looked at five things that matter most to a homeowner:
- Residential focus: the company actively sells and installs home systems in Chennai, not only commercial plants.
- Subsidy support: the company handles PM Surya Ghar registration and paperwork for you.
- TANGEDCO net metering: the company manages the net-meter application and inspection.
- Warranties and service: clear panel, inverter and workmanship warranties, plus after-sales support.
- Local presence: an office or authorised partner that can reach your home quickly for service.
7 residential solar companies in Chennai
Arka Solar Energy
Arka Solar Energy is a Chennai-based solar company in Chennai focused on rooftop systems for independent houses, villas and apartments, with commercial EPC work alongside. The team handles the full process in-house: site survey, system design, installation, TANGEDCO net-metering approval and the PM Surya Ghar subsidy application.
- 200+ installations and 2 MW of installed capacity, as stated on its website
- Tier-1 panels, 25-year panel performance warranty and 5-year workmanship warranty
- Subsidy registration and processing handled for the customer
- Office: No 472-B, 3rd Floor, Anna Salai, Nandanam, Chennai 600035 · +91 77089 24365
Best for: Chennai homeowners who want one local team handling design, subsidy and net metering end to end.
SolarSquare
SolarSquare is one of India's largest home-solar brands. On its Chennai page it states 2,831 kWp installed across 659 Chennai properties (citing PM Surya Ghar portal data, September 2026) and 50,000+ homes solarised nationally.
- Offers a guaranteed-savings plan with a per-unit payout if generation targets are missed
- Storm-tested mounting structures, relevant for Chennai's cyclone season
- Zero-down-payment loan options with EMIs from 6 to 60 months
Best for: homeowners who want a large national brand with packaged financing.
Heliostrom
Heliostrom is a Chennai-headquartered installer offering on-grid and hybrid home systems. It says it has 10+ years in operation and 460+ projects across Chennai and Tamil Nadu, and describes itself as a government-registered supplier for PM Surya Ghar.
- Covers site evaluation, design, installation, net metering and monitoring-app setup
- 25-year performance warranty
- States typical installation time of 1–3 days
Best for: homeowners who want hybrid (battery-backed) options from a Chennai-based firm.
Tata Power Solar
Tata Power Solar sells residential rooftop systems in Chennai through a network of authorised dealers, backed by the Tata Power group. Its Chennai page lists local rooftop dealers and a toll-free enquiry line (1800 419 8777).
- End-to-end EPC for homes and businesses through its dealer network
- Strong brand recognition and group backing
- Service quality depends on the individual dealer, so check the dealer as well as the brand
Best for: buyers who prioritise a household-name brand.
KCP Solar
KCP Solar Industry says it was founded in 1986 and offers domestic rooftop systems with PM Surya Ghar subsidy support. Its blog describes an in-house PV module plant in Salem and a mounting-structure facility.
- On-grid, off-grid and hybrid home systems
- Site survey, design, subsidy paperwork, net metering and maintenance
- Describes itself as an empanelled vendor
Best for: homeowners who prefer a long-established Tamil Nadu company.
Waaree
Waaree is one of India's largest solar module manufacturers and sells complete rooftop systems through franchise partners, including in Chennai. Buying from a manufacturer's network can simplify panel warranty claims.
- Panels made by the brand itself
- Installation handled by local franchise partners
- As with any franchise model, check the local partner's track record and service response
Best for: buyers who want manufacturer-branded panels.
KSquare Energy
KSquare Energy is an Ahmedabad-based installer with a dedicated Chennai offering. It states 8,000+ customers since 2016 and 2,000+ residential and commercial projects, with subsidy assistance and post-installation monitoring.
- Custom design, installation and subsidy approvals
- Monitoring and maintenance after installation
- Confirm who carries out local service in Chennai
Best for: homeowners comparing a multi-state installer with local firms.
Looking for commercial or larger installers too? See our wider list of the top 10 best solar companies in Chennai and the top solar EPC companies in Chennai.
Quick comparison table
| Company | Based in | Model | Subsidy help | Stand-out |
|---|---|---|---|---|
| Arka Solar Energy | Nandanam, Chennai | Direct installer | Yes | Local end-to-end team, apartments too |
| SolarSquare | National | Direct installer | Yes | Savings guarantee, EMI options |
| Heliostrom | Ekkattuthangal, Chennai | Direct installer | Yes | Hybrid systems, TN branches |
| Tata Power Solar | National | Dealer network | Via dealer | Brand backing |
| KCP Solar | Tamil Nadu | Direct installer | Yes | Since 1986, own module plant |
| Waaree | National | Franchise partners | Via partner | Manufacturer-branded panels |
| KSquare Energy | Ahmedabad | Direct installer | Yes | Multi-state scale |
What to check before you choose a residential solar company
The brand matters less than these checks. Ask every company the same questions and compare the answers in writing.
- Registered PM Surya Ghar vendor: the subsidy only goes through if your installer is registered for your DISCOM on the official PM Surya Ghar portal. Ask for proof.
- DCR, ALMM-listed panels: subsidy systems must use domestically manufactured (DCR) modules from MNRE's approved list. Get the panel make and model in the quote.
- Inverter brand and warranty: the inverter usually fails before the panels. Look for a known brand and check the warranty years.
- Mounting structure: Chennai sees cyclones most years. Ask for hot-dip galvanised structures and the wind-speed rating.
- Workmanship warranty and AMC: ask how many years of free service visits and cleaning are included.
- Net metering handled end to end: the company should file your TANGEDCO application and attend the inspection. Read our guide to TANGEDCO solar rules and USRP.
- A written, itemised quote: panel wattage, count, inverter, structure, cabling, earthing and net-meter charges should all be listed.
For a deeper version of this checklist, read how to choose the best solar company in Chennai: 8 questions.
Home solar subsidy in Chennai (PM Surya Ghar)
Under the PM Surya Ghar Muft Bijli Yojana, the central subsidy for residential rooftop solar is paid into your bank account after commissioning:
| System size | Central subsidy |
|---|---|
| 1 kW | ₹30,000 |
| 2 kW | ₹60,000 |
| 3 kW and above | ₹78,000 (maximum) |
As a rough guide, the scheme suggests 1–2 kW for homes using up to 150 units a month, 2–3 kW for 150–300 units, and 3 kW or more above 300 units.
See what you qualify for in our PM Surya Ghar eligibility and application guide, get the paperwork ready with the list of documents required for the rooftop solar subsidy in Tamil Nadu, and check current costs on our solar panel price in Chennai page. Not sure of your size? Compare 3 kW vs 5 kW systems or use the solar size calculator.
Live in a flat? Individual flat owners and associations have different options. Read solar for apartments in Chennai.
Red flags to avoid
- A price far below every other quote, usually a sign of non-DCR panels (no subsidy) or a weak structure.
- No company name, GST number or office address on the quote.
- Asking for full payment before installation.
- Vague answers on who files the net-metering and subsidy applications.
- Promising "zero bill forever". Savings depend on your usage, roof and TANGEDCO charges.
Frequently asked questions
Which is the best residential solar company in Chennai?
There is no single best company for every home. The right choice is a PM Surya Ghar-registered installer that uses DCR panels, handles TANGEDCO net metering, gives a written itemised quote and has a local service team. Compare at least three quotes on those points.
How much does a home solar system cost in Chennai?
Cost depends on system size, panel and inverter brand, and roof type. The PM Surya Ghar subsidy reduces it by up to ₹78,000. See our solar panel price in Chennai (2026) page for current figures.
What size solar system does a Chennai home need?
Homes using 150–300 units a month usually suit a 2–3 kW system, and homes above 300 units a month suit 3 kW or more. Enter your bill details in our solar system size calculator for a closer estimate.
How long does residential solar installation take?
Physical installation usually takes one to three days. Net-meter approval and commissioning by TANGEDCO add more time, and the subsidy is released after commissioning.
Do I need TANGEDCO approval for rooftop solar?
Yes. A grid-connected home system needs a net-metering application and inspection from TANGEDCO. A good installer files this for you.
Can I get the subsidy through any solar company?
No. The subsidy only applies when the installer is a registered vendor on the PM Surya Ghar portal for your DISCOM and the system uses approved DCR panels.
Get a free home solar quote in Chennai
Arka Solar Energy will survey your roof, size your system, and handle the PM Surya Ghar subsidy and TANGEDCO net metering for you.