Turn units consumed into a bill using telescopic slab rates, a fixed charge, and electricity duty. Edit every slab to match your own state tariff.
What does telescopic billing mean?
Only the units inside each slab are charged at that slab rate. Crossing into a higher slab does not reprice the units below it. So 275 units are billed as 100 + 100 + 75 at three different rates, not 275 at the top rate.
Why are the default slabs not my state’s?
Because there is no national tariff. Every state regulator sets its own slabs, and DISCOMs within a state can differ too. The defaults here are a labelled example. Copy the slabs and rates off your last bill into the fields and the answer becomes yours.
What is the fixed charge for?
It covers the connection itself and is billed whether you use power or not. Many states scale it with your sanctioned load in kilowatts, so a larger connection pays more even at the same consumption.
What is electricity duty?
A state tax on electricity, usually a percent of the energy and fixed charges. Rates vary widely by state and some states exempt low consumption entirely. Your bill lists it as a separate line.
How do I cut my bill?
Attack the units at the top slab first, since they cost the most. On the example tariff every unit above 300 costs ₹8.50 while the first hundred cost ₹4.50. Air conditioning, geysers, and old refrigerators are where those top-slab units usually go.
Why is my effective rate higher than the first slab rate?
Because it averages every slab you reached, plus the fixed charge and duty spread across your units. At 275 units on the example tariff the effective rate is ₹6.46 even though the first slab is ₹4.50.