Solar Panel Installation in Thirumazhisai
Skylights and purlins surveyed, so the quote reflects the roof you actually have
Industrial and warehouse roofs here are almost all profiled sheet, and most of them carry translucent skylight panels. Those skylights cannot be built over, and where they sit determines how much of the roof is genuinely available.
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
The short answer
Looking for a solar panel installation company in Thirumazhisai?
Most of what we install in Thirumazhisai goes on independent houses, where the terrace belongs to the same person as the electricity connection and nothing needs a committee. Because it is a newer area, roofs here are generally in good condition and the paperwork moves faster than the average. We have installed across Chennai since 2020, file the PM Surya Ghar subsidy of up to ₹78,000 for households and the TANGEDCO net metering application ourselves, and include two years of free maintenance. Before the survey, you can check the solar panel price in Chennai for 3 kW to 10 kW systems and see how our solar panel installation in Chennai works, the same process we follow in Thirumazhisai.
What it costs here
A typical 5 kW system in Thirumazhisai
Standard 5 kW example
What a typical 5 kW home system does, on a terrace that can take one. Your own figures come from the survey.
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.
The local picture
Skylights, and the roof you actually have
Most industrial and warehouse buildings use profiled sheet roofing with translucent skylight panels set into it at intervals to provide daylight inside. Those panels cannot carry a solar array and cannot be covered, since covering them defeats their purpose and darkens the working space below. On a roof with regularly spaced skylights, the genuinely usable area for solar can be substantially less than the roof plan suggests.
What the roof survey establishes
Skylight positions and spacing
And how much contiguous sheet area remains between them.
Whether the array can span skylights
On a raised structure without shading them. Sometimes it can, provided the daylight below remains adequate, and sometimes the shading defeats the purpose.
Purlin positions and spacing
Which determine where the mounting can actually fix. Fixings go into structure, not into sheeting.
Sheet condition and remaining life
Which decides whether the roof is dealt with before or after the array, along with roof slope and orientation, since a sheet roof array follows the roof plane.
The daylight trade-off is worth taking seriously
Skylights reduce daytime lighting load, which is itself a saving
Covering them to gain array area can increase artificial lighting consumption, partly offsetting what the extra panels generate. On a building with substantial daytime occupancy that is a real calculation rather than a theoretical one.
The commercial rules apply as everywhere
Size to daytime self-consumption
Non-domestic consumers are generally on net feed-in rather than one-for-one net metering, so exported units earn well below what the unit pays on imports. Solar reduces the energy charge, not the demand charge, which is levied on contract or recorded maximum demand.
Areas we cover around Thirumazhisai: Thirumazhisai, Poonamallee approach, Mangadu border, Nemilichery, Nazarathpet, the industrial estate roads.
All areas we cover in Tiruvallur →Residential
Solar for Thirumazhisai homes
Independent houses on layout plots
Typically install 3 kW to 5 kW.
Larger plots
Make elevated structures practical where the terrace is used.
Outer-circle approval timelines
Apply, so applications are filed in parallel.
Apartment blocks
Follow the association route for common-area systems.
Commercial and industrial
Solar for Thirumazhisai businesses
Industrial and warehouse units
Sheet roofs with skylights, where usable area needs surveying rather than estimating.
Logistics operations on the corridor
Large roof relative to load, so sizing to self-consumption matters.
Small manufacturing
Modest roofs, commercial tariffs, and depreciation subject to taxable profit.
Retail and service businesses
On the main roads.
Local guide
Thirumazhisai solar: industrial estate floods and a planned new town
During Cyclone Michaung in December 2023, every unit in the Thirumazhisai Industrial Estate had water up to two feet inside, after surplus from Nemam and Chembarambakkam lakes was diverted towards it.
What December 2023 means for equipment placement
The Hindu and BusinessLine reported that the estate was among the worst hit in Chennai, with surrounding areas under six to seven feet of water at the peak and people rescued by boat. The New Indian Express reported about 200 units affected and losses put near ₹200 crore, after lake water was diverted towards the estate to protect homes. For a sheet-roof unit here, we mount string inverters on the roof structure or a mezzanine wall, keep the solar LT panel and any combiner boxes well above two feet, and route cables along the building rather than through floor trenches. Ask for this to be shown on the single-line diagram before signing.
A planned new town around the bus terminus
CMDA's 2025 to 2045 plan treats Thirumazhisai as a high-density, mixed-use hub served by NH-48, the Outer Ring Road, a proposed metro corridor and the Kuthambakkam bus terminus. Its land pooling notice covers 1,605.75 acres for a 30 metre loop road, returning 60% of pooled land to owners as regular plots with drains and roads. For anyone building on those plots, solar is cheapest when designed in: a three-phase connection if the load will exceed 4 kW, a conduit from terrace to meter, and a slab designed for an elevated structure. Retrofitting the same provisions later costs more.
Sizing a sheet-roof unit on the Thiruvallur yield
The state rooftop calculator gives Thiruvallur district about 1,600 units per kW a year, roughly 4.4 a day. A 25 kW array on a small manufacturing unit makes about 40,000 units a year, about 110 on a clear day. Units used on site save your full tariff; exports are credited at ₹3.37 a unit between 11 and 150 kW. If the unit's daytime draw on working days is well above 110 units, the system pays back mostly through self-consumption. If it is well below, choose a smaller array, because surplus exports earn far less than the tariff each self-used unit saves.
Homes in the town panchayat
Outside the estate, much of Thirumazhisai is houses on layout plots, and the domestic rules are the same as in Chennai. On the Thiruvallur yield, a 3 kW system makes about 4,800 units a year, around 800 in each bi-monthly cycle. It costs about ₹2,10,000 before subsidy and about ₹1,10,000 after the central and Tamil Nadu subsidies for an eligible home. Domestic connections pay no fixed charge, so the remaining bill is mostly the network charge on generation, about ₹0.32 a unit. Homes keep net metering up to their sanctioned load, and above 4 kW need three-phase supply.
What we install
What we install in Thirumazhisai
The process
How installation works
Free site survey
Shade-free roof area measured across the day, structure checked, connection name and sanctioned load confirmed.
Design and itemised quotation
Sized against twelve months of consumption, with every component named.
Approvals filed
PM Surya Ghar and TANGEDCO net metering, plus load enhancement or phase conversion in parallel where needed.
Installation
One to three days for a residential system, carried out by our own team rather than subcontracted.
Inspection and commissioning
TANGEDCO inspects, the net meter goes in, the system goes live.
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
What will it cost on your roof in Thirumazhisai?
Quoted from a roof plan?
On a sheet roof with skylights the usable area is well under the plan area. We survey the roof before pricing anything.
What happens after you send your details
- We call you within one working day, and an engineer rather than a salesperson attends the site.
- The survey is free. We measure usable area and shading, check your connection and sanctioned load, and photograph the site.
- You get an itemised quotation naming every component and brand, with the subsidy or depreciation position set out.
- No obligation at any point. If solar does not make sense for your property, we will say so.
Common questions
Solar in Thirumazhisai, common questions
Do skylights reduce how much solar fits on a warehouse roof?
Usually yes, and sometimes substantially. Translucent skylight panels cannot carry an array and covering them darkens the space below. On a roof with regularly spaced skylights the genuinely usable contiguous area can be well under what the roof plan suggests, which is why the survey measures rather than estimates.
Can we build over the skylights?
Sometimes, on a raised structure that spans them without fully shading them, provided daylight below remains adequate. But skylights reduce daytime lighting load, which is itself a saving, so covering them can increase artificial lighting consumption and partly offset what the extra panels generate. It is a real calculation on an occupied building.
Where can the mounting be fixed on a sheet roof?
Into the purlins, which are the structural members beneath the sheeting, not into the sheets themselves. Purlin spacing and section therefore determine where fixings can go and how the array is laid out, alongside the skylight positions. That is established at the roof survey.
How long does installation take in Thirumazhisai?
Six to eight weeks from survey to a live, net-metered system is typical in Thirumazhisai, and newer areas often land at the shorter end because connection records are current. The installation itself is one to three days for a home; the rest is TANGEDCO approval and the meter.
Do you handle the subsidy and TANGEDCO paperwork?
Yes, both are ours to file. Applications from newer areas like Thirumazhisai usually move faster because the connection details and sanctioned load are recent and correct. We still verify the name on the connection and the load at the survey, then track the subsidy to your bank account after commissioning.
What is included after installation?
Two years of free maintenance from commissioning, covering panel cleaning, annual inspection of connections and structure, generation monitoring and warranty coordination with the manufacturer.
Our unit in Thirumazhisai Industrial Estate flooded in 2023. Where should the solar inverters go?
Off the floor. String inverters can be fixed to the roof structure or a mezzanine wall, with the LT panel and combiner boxes raised well above the 2023 water level, so a repeat flood stops production but not the solar plant.
We own a plot in the Thirumazhisai land pooling area. Should we plan solar now or wait?
Plan it into the building design now, even if you install later. A three-phase connection, a terrace-to-meter conduit and a slab ready for an elevated structure cost little during construction and save rework afterwards.
Long tail coverage
Areas we cover around Thirumazhisai
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.