Ten days is the schedule we quote and the schedule we hit on most residential jobs. It is worth seeing where those days actually go, because only three of them involve anyone on your roof.
Days one to three: survey and design
A surveyor measures usable roof area, checks shading through the day, inspects the existing structure and photographs the meter and distribution board. That visit produces the single-line diagram, the structure drawing and the final bill of materials. Approvals go in the same day.
Days four to seven: fabrication and paperwork
Structure is fabricated to the roof's dimensions while the net-metering application sits with the discom and the subsidy packet is registered. Nothing happens on site during this window, which is the part customers find hardest and the part we cannot compress.
Days eight to ten: install and commission
The one thing that can move the date
Net-meter sanction sits with the discom. When it runs long, the system still generates for self-consumption from day ten — you simply cannot export until the meter is swapped.
What to take away
Sandeep Kaul
Field operations
Runs survey and installation crews. Fifteen years on North Indian roofs, most of them in the two weeks before monsoon.
Run these numbers against your own bill
The calculator uses state-wise generation data and the current subsidy slabs. Two inputs, one estimate, no call required.
