Terraces beside Guindy National Park lose the same hours every day to a fixed tree line. Terraces beside the industrial estate can lose the low sun to a shed next door. ZeroEB marks that band before any module is counted. The visit is from Madipakkam and is free.
Along the park edge the canopy is not a pot on the terrace. It is a tall line of trees that covers one side at the same time each day. That side stays empty. A photograph taken at noon will not show it, so the visit has to include those hours, or a note of which way the terrace faces.
Near Guindy Industrial Estate the neighbour may be a workshop shed. It is taller than a house parapet and lower than a residential tower. Its shadow sits on the glass at the start and end of the day, and that strip is left bare. Fine grit from the estate is why a walkway stays, so the glass can be washed later. City-wide module choice is on panels for a Chennai home. Traffic film on GST Road is the Alandur case. Here the shade comes from the park or from a shed.
The park tree line covers the same side every day. Modules are counted only on the hours that stay clear.
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.