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Rooftop solar panel array in Chennai priced per kilowatt
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Installed cost per kW, what the ₹78,000 subsidy leaves you paying, and payback by system size.

Not sure which size? The calculator sizes it from your bill in two clicks.

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Residential rooftop solar installation on a Chennai house terrace
Residential solar →

Rooftop systems for Chennai homes, sized against your bill and your sanctioned load.

Commercial rooftop solar arrays across warehouse roofs in Chennai
Commercial solar →

Higher tariffs, accelerated depreciation and green audit certification. Usually a faster payback than a home.

Installation team fixing solar panels on a rooftop in Tamil Nadu
Solar solutions →

On-grid, off-grid or hybrid. Which one your site actually calls for.

Solar lighting →

Standalone lighting for gated communities, factory perimeters, schools and layouts. No meter, no TANGEDCO file.

Rooftop solar array in Chennai claimed under the PM Surya Ghar subsidy
Subsidy and approvals →

Up to ₹78,000 from PM Surya Ghar, and the TANGEDCO file we handle for you.

Rooftop solar installation in Chennai eligible for the PM Surya Ghar subsidy PM Surya Ghar in Tamil Nadu ₹30,000 / ₹60,000 / ₹78,000 slabs Rooftop solar installation connected under TANGEDCO net metering TANGEDCO net metering Four to eight weeks, filed by us Homeowner reviewing solar subsidy documents with an engineer Eligibility and documents What to keep ready before applying
! A state top-up to ₹1 lakh was announced on 5 August 2026 but is not claimable yet. The checklist below is the PM Surya Ghar and TANGEDCO file.
Solar engineer reviewing rooftop generation data on a tablet

Calculators

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Rooftop solar installation in Chennai by Blues Renewables
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What changes from one part of the city to the next, and which areas we survey.

Coverage across Tamil Nadu →

Your area not listed? We survey across the whole city and metropolitan area.

Call +91 98841 07170
Call +91 98841 07170

Solar Panel Installation in Thirumullaivoyal

Sized for where your consumption is heading, or an inverter with headroom to get there

A common plan is to install a small system now and add to it in a few years. It sounds sensible and it usually costs more than doing it once, for reasons that are worth understanding before you choose the smaller system deliberately.

Installing across Chennai since 2020

Two years free maintenance included

Subsidy and TANGEDCO paperwork filed by us

Free site survey and energy audit, no obligation

Rooftop solar panels being installed on a building in Chennai

Free, no obligation

Book a free survey in Thirumullaivoyal

1 working day

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The short answer

Looking for a solar panel installation company in Thirumullaivoyal?

Blues Renewables is a solar panel installation company working in Thirumullaivoyal and across Chennai since 2020. We install rooftop solar for homes, apartments, businesses and industrial units, handle the PM Surya Ghar subsidy of up to ₹78,000 for households and the TANGEDCO net metering application end to end, and include two years of free maintenance with every installation.

Local proof

A recent installation in Thirumullaivoyal

Rooftop solar panels being installed on a building in Chennai

Project record

System size e.g. 5 kW
Sub-locality e.g. Thirumullaivoyal
Roof type e.g. RCC terrace
Bill before e.g. ₹4,200 per cycle
Bill after e.g. ₹350 per cycle
Commissioned e.g. March 2026

The local picture

Why adding panels later rarely goes to plan

Expanding an existing solar system is possible but seldom as simple or as cheap as buyers expect. Panels are connected in series into strings feeding an inverter, and strings work best when every module in them is identical. Adding modules of a different make, wattage or age to an existing string degrades the performance of the whole string, not just the new part.

What actually constrains an expansion

Inverter capacity

Your existing inverter has a maximum array size it can accept. Beyond that you need a second inverter or a replacement, which is a substantial part of the cost.

String matching

The panel you bought three years ago may no longer be manufactured. Mixing different modules within a string reduces output across it, so new panels usually need their own string and their own MPPT input.

A fresh net metering application

Increasing system capacity means reapplying to TANGEDCO, with the same feasibility, inspection and metering steps as a new installation.

Sanctioned load again

A larger system may exceed your sanctioned load, requiring an enhancement and possibly a three-phase conversion, plus a second mobilisation whose access and setup costs are largely fixed.

The practical conclusion

If your consumption is likely to grow, install for it now

Whether through air conditioning, an EV or an extension, it is usually cheaper than expanding later. Where budget genuinely constrains you now, installing a smaller system and accepting the later cost is a legitimate choice, but it should be made knowingly rather than on the assumption that adding later is trivial.

One useful middle path

Specify an inverter with headroom above your current array

So a future expansion only means panels and a string rather than replacing the inverter. The premium is modest and it preserves the option. Thirumullaivoyal’s mix brings residential and light industrial work: houses on reasonable plots typically support 3 kW to 5 kW, and industrial units toward Ambattur have sheet roofs where condition determines the sequence.

Areas we cover around Thirumullaivoyal: Thirumullaivoyal, Avadi border, Ambattur approach, Pattabiram side, Korattur, the industrial approaches.

All areas we cover in Tiruvallur →

Not sure what your site can carry?

Send us your last electricity bill on WhatsApp and we will come back with an indicative system size and what it would offset. No visit needed for that first answer.

WhatsApp 98841 07170 Book a free survey

Residential

Solar for Thirumullaivoyal homes

Independent houses

Typically install 3 kW to 5 kW, sized for likely future consumption rather than only current.

An inverter with headroom

Preserves the option to expand without replacing it.

Apartment blocks

Follow the association route for common-area systems.

Outer-circle approval timelines

Apply, so applications are filed in parallel.

Get a free roof survey →

Commercial and industrial

Solar for Thirumullaivoyal businesses

Light industrial units toward Ambattur

Sheet roofs and commercial tariffs.

Workshops and service units

Modest loads, depreciation subject to taxable profit.

Retail on the main roads

Evening-weighted and usually leased.

Schools and institutions

Term-time daytime match.

Request an energy audit →

What we install

What we install in Thirumullaivoyal

Rooftop solar for homes Systems from 1 kW to 10 kW, sized to your actual consumption Read more → Solar for independent houses Elevated structures up to 9 feet that keep your terrace usable Read more → Industrial solar Sheet roof and ground mount for factories and HT connections Read more → Commercial solar EPC Turnkey installations for offices, showrooms and institutions Read more → Solar for apartments and societies Common area systems with the ₹18,000 per kW society subsidy Read more → PM Surya Ghar subsidy Up to ₹78,000 for homes, filed and followed through by us Read more → Solar panel prices What a system costs in Chennai, by size Read more → Solar calculator Enter your bill, see your system size and payback Read more →

The process

How installation works

1

Free site survey

Shade-free roof area measured across the day, structure checked, connection name and sanctioned load confirmed.

2

Design and itemised quotation

Sized against twelve months of consumption, with every component named.

3

Approvals filed

PM Surya Ghar and TANGEDCO net metering, plus load enhancement or phase conversion in parallel where needed.

4

Installation

One to three days for a residential system, carried out by our own team rather than subcontracted.

5

Inspection and commissioning

TANGEDCO inspects, both meters go in, the system goes live.

6

Subsidy tracked to your account

And two years of maintenance included from commissioning.

We check the name on your electricity connection at the survey, because a mismatch stops more applications than any technical issue. See what to keep ready.

Free, no obligation

Book a free survey in Thirumullaivoyal

Planning to add panels later?

It costs more than you think. A fresh application, a possible inverter replacement and a second mobilisation. Plan it now instead.

What happens after you send your details

  1. We call you within one working day, and an engineer rather than a salesperson attends the site.
  2. The survey is free. We measure usable area and shading, check your connection and sanctioned load, and photograph the site.
  3. You get an itemised quotation naming every component and brand, with the subsidy or depreciation position set out.
  4. No obligation at any point. If solar does not make sense for your property, we will say so.

Request received

Thanks, {{ leadName }}.

We will call {{ leadMobile }} within one working day to fix a time. An engineer attends the site, not a salesperson.

Send your bill on WhatsApp

We will call you within one working day. Your number stays with us and is never sold.

Common questions

Solar in Thirumullaivoyal, common questions

Yes, but rarely as cheaply as expected. Your inverter has a maximum array size, so exceeding it means a second inverter or a replacement. The original panel model may be discontinued, and mixing modules within a string reduces output across it. A capacity increase also requires a fresh TANGEDCO net metering application.

Specify an inverter with headroom above your current array size. The premium is modest, and it means a future expansion involves adding panels and a string rather than replacing the inverter. It preserves the option without paying for capacity you are not yet using.

If your consumption is likely to grow through air conditioning, an EV or an extension, usually yes, because a second mobilisation, a fresh application and possible inverter replacement together cost more than the difference. Where budget genuinely constrains you, the smaller system is a legitimate choice made knowingly.

Six to ten weeks from survey to a live, net-metered system, with TANGEDCO approval and meter installation the main variable. The installation itself is one to three days for a residential system, and longer for a commercial or industrial project.

Yes. We file the PM Surya Ghar application and the TANGEDCO net metering application, follow both through the section office, and track the subsidy to your bank account. We also check the name on your electricity connection at the survey, since a mismatch stops applications more often than any technical issue.

Two years of free maintenance from commissioning, covering panel cleaning, annual inspection of connections and structure, generation monitoring and warranty coordination with the manufacturer.

Long tail coverage

Areas we cover around Thirumullaivoyal

Thirumullaivoyal Avadi border Ambattur approach Pattabiram side Korattur the industrial approaches

Not listed? We survey across Chennai and the surrounding districts. Call and we will tell you straight away whether we can reach your site this week.

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