Solar panels for your home in Saidapet.

From the lane, many of these buildings show a sheet over the shop. The home terrace is the concrete behind it. Modules go on that concrete. The sheet is not drilled, and it is not counted. The visit from Madipakkam is free.

The sheet is the shop roof. Rails are not screwed through it. We mark the concrete over the rooms behind, leave the tank and a walkway, and see whether that area matches the home's daytime use. A house that is already all concrete, with no shop sheet, is an ordinary survey.

An old sheet over the rooms of a house, rather than a shop front, is the Siruseri case. A board or an exhaust already on the terrace is the Alwarpet case. The home meter, not the shop bill, is the Palavakkam case. Wires beside the station are the Tambaram case. If the lane floods when the river rises, delivery waits. That is the Keelkattalai case, not the first line here. An old brick roof is the Nungambakkam case. A neighbour's pipe on the slab is the Royapettah case. A flat cannot take the common roof of a large block. That is the Sholinganallur case. City-wide module choice is on panels for a Chennai home.

The slab over the rooms behind the shop is the only place we draw a row.

A full plant for a Chennai home is described on the solar installation page. The visit is free, and nothing is ordered until you ask. The desk is open monday to saturday, 9:00 am – 7:00 pm.