Solar Panel Installation in Keelkattalai

We check your sanctioned load first, because here it usually caps the system before the roof does

In Keelkattalai the limit on your solar system is more often your electricity connection than your roof. Many houses here were connected decades ago at a sanctioned load that made sense then, and have added air conditioning since without ever revisiting it.

Residential

Solar for Keelkattalai homes

Independent houses

Typically install 3 kW to 5 kW, subject to sanctioned load rather than roof area.

Older connections

Frequently need enhancement, filed alongside the net metering application.

Apartment blocks

Follow the association route for common-area systems.

Elevated structures

Suit properties where the terrace is in active use.

Commercial and industrial

Solar for Keelkattalai businesses

Shops and small retail

On the main roads. Evening-weighted, usually leased, so roof rights first.

Clinics and small practices

Good daytime match and commercial tariffs.

Schools and coaching centres

Strong term-time daytime load.

Small offices and service businesses

Often in converted residential buildings.

Keezhkattalai Lake and the drains that overflow

Keezhkattalai Lake lies upstream of Narayanapuram Lake in the Pallikaranai watershed, and the Radial Road cuts through both. Citizen Matters reported in May 2025 that the road was submerged in the 2015, 2021 and 2023 floods. The lake's excess water canal was converted into three stormwater drains after 2017, and a fourth drain worth ₹45 crore was under construction. Until that work proves itself, treat the low streets near the lake as flood prone. In practice that means the inverter and distribution boxes go on the terrace or an upper floor, and DC cables run down from the roof rather than along the ground.

Six kilometres from the runways

The Airports Authority of India sets a permitted top elevation for every grid square around the airport, in metres above mean sea level, through its colour coded zoning map. Buildings below that elevation can be approved locally. Above it, or in a red grid, an AAI no objection certificate is needed. A standard low-mounted array adds very little height, but an elevated structure on a three or four storey building is worth checking against the map first. We check your building height before quoting a raised structure, so the design never has to be cut down after installation.

Sizing on the Chengalpattu yield

Keelkattalai is in Chengalpattu district, where the state rooftop calculator gives about 1,580 units per kW a year. A 3 kW system makes about 4,740 units a year and a 4 kW system about 6,320. Four kW is also the ceiling on single-phase supply, so a 5 kW system here, making about 7,900 units, means three-phase. A 3 kW system costs about ₹2,10,000 before subsidy and about ₹1,10,000 after both subsidies. A 5 kW system costs about ₹3,20,000, or about ₹2,20,000 after both.

Hospitals and schools on the two main roads

Keelkattalai has three hospitals and several matriculation and higher secondary schools along its arterial roads. Both run heavy daytime loads, which suits solar, but they are on non-domestic connections and so on net feed-in rather than net metering. Exported units earn ₹3.61 a unit up to 10 kW and ₹3.37 from 11 to 150 kW, far below the tariff they pay. A hospital that runs round the clock can use almost everything it generates. A school on a long holiday cannot, so size its system to term-time daytime load.