Every number, and where it came from

The method, in five steps

1. 01

   Your bill becomes units

   We use your DISCOM’s real slab table, not an average rate. Fixed charges come out first.

2. 02

   Units become a system size

   Your yearly usage divided by what a kilowatt generates here, after a realistic 80% loss factor.

3. 03

   The system gets a price

   Built line by line from a bill of materials. The same figures drive our public cost breakdown.

4. 04

   Savings are the gap between two bills

   Not units times a rate. As solar covers more, you fall back down through the slabs.

5. 05

   Then 25 years of it

   Including panel ageing, rising tariffs, servicing, and one inverter replacement around year twelve.

The figures themselves

Shown for Bengaluru Urban on BESCOM LT-2(a) Domestic, Urban.