Two organisations shape almost every number on your electricity bill and in any solar deal.
DISCOM
A DISCOM (distribution company) supplies electricity to your home or business and sends the bill, for example MSEDCL in most of Maharashtra or BESCOM in Bengaluru. With rooftop solar, the DISCOM approves your connection and installs the net meter. With open access, it still carries the power over its network and collects wheeling charges and surcharges.
SERC
Each state’s electricity regulatory commission (SERC) sets DISCOM tariffs, open access charges, banking rules and net metering terms through public orders. Examples are KERC in Karnataka, MERC in Maharashtra, GERC in Gujarat and RERC in Rajasthan. Its latest order is the final word on what you pay.
How rules change
- The DISCOM files a petition asking for new tariffs or charges.
- The commission holds public hearings where businesses and groups can object.
- The commission issues a tariff order, usually once a year.
- Charges can also change after a court ruling, sometimes mid-year.
Why it matters to you
A solar saving calculated today depends on tomorrow’s orders. That is why every figure on WattDekho carries the date it was checked, and why state pages link to the order behind each fee.
Related: surcharges, net metering.
Sources
Figures last checked on 26 September 2026.