Rooftop Solar for Homes in Chennai. Reduce Your EB Bill by Up to 90%.
Chennai gets over 300 sunny days a year. Your rooftop sits unused. Heliostrom turns that space into a power plant — one that pays for itself in under 4 years and delivers free electricity for 25 years after that.
Three Types of Rooftop Solar. One Is Right for You.
Choosing the wrong system type is the most expensive mistake homeowners make. Here is an honest breakdown of the three options — and exactly which one fits your situation.
On-Grid Solar
Most PopularHomes with stable power supply (less than 1 hour of daily cuts)
Your solar panels power your home during the day. Excess electricity feeds to the TANGEDCO grid via a bi-directional net meter. At night, you draw from the grid — paying only the difference. No battery needed.
- Maximum EB bill reduction — up to 90%
- Eligible for full PM Surya Ghar subsidy (up to ₹78,000)
- Fastest payback period — 3 to 4 years
- No battery = no maintenance, lower upfront cost
- System shuts off during TANGEDCO grid failure — national safety regulation, not a defect
- Best suited to Chennai areas where power cuts are rare or brief
- Net metering policy active in Tamil Nadu since October 2021
Hybrid Solar
Best of Both WorldsHomes with 2 to 5 hours of daily power cuts who want both backup and bill savings
Solar powers your home during the day. Excess energy is stored in batteries. During a TANGEDCO power cut, the battery takes over automatically — in milliseconds. Bill reduction and backup, combined.
- 70 to 90% EB bill reduction
- Power backup during grid failures — automatic switchover
- Battery stores excess solar for night use
- Can export to grid when battery is full
- Solar panels and inverter eligible for subsidy — battery portion is not
- Battery life: 7 to 10 years (lithium) — plan for future replacement cost
- Higher upfront investment but significantly more functionality
Off-Grid Solar
Zero Grid DependencyAreas with 6+ hours of daily power cuts, or where grid connection is unreliable
Completely independent from the TANGEDCO grid. Solar charges a battery bank during the day. The battery powers your home through the night. The grid is used only as emergency backup — or not at all.
- Complete energy independence from TANGEDCO
- Near-zero electricity bill
- Works in areas with no reliable grid connection
- Immune to TANGEDCO tariff increases
- Not eligible for PM Surya Ghar government subsidy
- Requires a large battery bank — the biggest cost component
- Highest upfront investment of the three options
On-Grid Solar
Most PopularHomes with stable power supply (less than 1 hour of daily cuts)
Your solar panels power your home during the day. Excess electricity feeds to the TANGEDCO grid via a bi-directional net meter. At night, you draw from the grid — paying only the difference. No battery needed.
- Maximum EB bill reduction — up to 90%
- Eligible for full PM Surya Ghar subsidy (up to ₹78,000)
- Fastest payback period — 3 to 4 years
- No battery = no maintenance, lower upfront cost
- System shuts off during TANGEDCO grid failure — national safety regulation, not a defect
- Best suited to Chennai areas where power cuts are rare or brief
- Net metering policy active in Tamil Nadu since October 2021
Not sure which system is right for you? Our engineer assesses your area's power situation, household usage, and budget during the free site survey — and gives you an honest recommendation.
Find the Right Size. Know the Exact Cost.
Use your monthly EB bill to identify the recommended system size. All pricing is for on-grid systems in Chennai, inclusive of panels, inverter, mounting structure, wiring, earthing, and TANGEDCO net meter coordination.
1Match Your EB Bill to a System Size
Generation based on Chennai's average 5.35 kWh/m²/day solar irradiation and 300+ sunny days per year. Actual figures vary by roof orientation, shading, and panel efficiency.
Heliostrom Handles the Entire Application
The central government subsidy is deposited directly into your bank account after installation. Heliostrom manages the full process — you only provide your documents.
Everything in the Price. Nothing Hidden.
When Heliostrom quotes you a number, that is the complete price. No surprise additions after you sign.
Hardware
- Tier-1 mono-PERC or TOPCon solar panels
- Grid-tie or hybrid inverter (per system design)
- Hot-dip galvanised mounting structure
- DC and AC weather-resistant cables
- Junction boxes and connectors
- Earthing kit and lightning arrestor
- Generation meter (where required)
Installation Work
- Free site survey and shadow analysis
- Engineering design by qualified engineer
- Rooftop mounting structure fabrication and fixing
- Complete cable routing from rooftop to DB board
- Inverter installation and commissioning
- Earthing and lightning protection installation
- System testing and performance sign-off
Paperwork & Support
- PM Surya Ghar subsidy application and tracking
- TANGEDCO net meter application and follow-up
- TEDA registration assistance (where applicable)
- Monitoring app setup (where available)
- Post-installation system walkthrough
- 1-year comprehensive maintenance support
- 25-year panel performance warranty support
Not included in the standard price: Civil work for parapet reinforcement (if structurally required), electrical panel upgrades if needed, cable runs exceeding 30 metres. These are rare, site-specific items — always quoted separately and transparently after the site survey before you commit.
From Your First Call to Your First Saving.
A five-step process. No back-and-forth, no confusing paperwork, no hidden steps. We manage the government interface entirely — you just show up on installation day.
Free Site Survey
Our engineer visits your home. Rooftop area, structural strength, shadow analysis, electrical panel, and EB bills all assessed. You get an honest recommendation — not a sales pitch. If solar does not make sense, we will tell you.
Custom Proposal
Exact system design, component specifications, itemised pricing, estimated monthly generation, savings figure, subsidy amount, and payback period — all specific to your rooftop. No generic templates.
Installation
Our certified team installs the mounting structure, places panels, routes cables, fits the inverter, and completes earthing and lightning protection. Your home is undisturbed beyond the rooftop. Typical time: 1 to 2 days.
TANGEDCO Net Meter
We submit the net meter application to TANGEDCO and follow up until the bi-directional meter is installed. You do not visit any office. We track every communication on your behalf.
Subsidy in Your Account
After net meter installation, Heliostrom uploads commissioning photos and documents to the PM Surya Ghar portal. The subsidy is credited directly to your bank account — no action required from you.
Why 500+ Chennai Homeowners Chose Heliostrom.
MNRE Approved — Subsidy Is Guaranteed
We are a registered MNRE-approved installer. Your installation automatically qualifies for PM Surya Ghar subsidy. We handle the complete application — you just provide your Aadhaar, EB consumer number, and bank details.
Honest Proposals. We Do Not Oversize.
We design systems based on your actual consumption, not on what earns us more margin. If a 2 kW system is right for your home, we will not try to sell you a 5 kW. Our site survey is an engineering assessment — not a sales call.
Tier-1 Panels Only. 25-Year Warranty.
Heliostrom installs mono-PERC and TOPCon panels from Tier-1 manufacturers only — panels with genuine 25-year linear performance warranties. We do not use cheaper alternatives that degrade faster in Chennai's heat and coastal humidity.
We Handle All TANGEDCO Paperwork.
Net meter applications, TANGEDCO site inspections, TEDA registration — we manage every interaction with the government on your behalf. You do not need to visit any office or fill any forms.
After-Sales Support for 25 Years.
Our work does not end on commissioning day. AMC packages, annual inspections, monitoring support, and warranty claims are all handled by the same team that installed your system — not a third-party call centre.
5.0 Google Rating. 35 Real Reviews.
Every review on our Google profile is from a real customer. Read them before you decide. We will not pretend every installation is flawless — but we fix every problem we cause, and our customers know it.
Frequently Asked Questions
Your Rooftop Is Ready. Your Savings Should Be Too.
Get a free site survey from Heliostrom. Our engineer visits your home, assesses your rooftop, and gives you a detailed proposal with exact savings figures — at zero cost and zero obligation. We install solar across Chennai and all major districts in Tamil Nadu.
Heliostrom provides rooftop solar panel installation for homes in Chennai and across Tamil Nadu. We offer on-grid, hybrid, and off-grid solar power systems for independent houses, villas, apartments, and residential buildings. MNRE approved. PM Surya Ghar subsidy assistance included. Serving Anna Nagar, Velachery, Tambaram, OMR, Porur, Adyar, Ambattur, Chromepet, Coimbatore, Madurai, Salem, Trichy, Tirunelveli and all major districts across Tamil Nadu.