Solar panels for your home in Keelkattalai.

Plots beside the lake are often not a clean rectangle, and the parapet follows that shape. Modules go in the clear rectangle inside it. The odd corners stay for the tank and a walkway. If the lane holds water when the eri rises, the install day waits. The visit from Madipakkam is free.

Older houses around Keelkattalai eri, and some of the newer ones on the same irregular plots, do not give a brochure roof. One side steps in for a neighbour's wall. Another corner is cut by the stair room. Chasing that crooked edge with extra modules wastes glass and blocks the tank. We measure the largest clear rectangle, put the row there, and stop.

The lake changes the calendar more than the drawing. Some lanes hold water after a heavy rain. A design can be finished then. A lorry cannot. We book delivery for a day the street is passable. City-wide module choice is on panels for a Chennai home. Whether the slab is the last floor is the Medavakkam question. Wind off open wetland is the Pallikaranai case. Here the limits are the shape of the plot and the day a vehicle can arrive.

We trace the actual wall, not a rectangle imagined from the street. Steps and cut corners come off the drawing.

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.