KSEB bill calculator for Kerala homes

The Kerala State Electricity Regulatory Commission (KSERC) sets the domestic (LT-I) tariff, and KSEB Ltd bills it. There are two regimes:

• Up to 250 units a month: telescopic. Each slab's rate applies only to the units inside it. The first 50 units cost ₹3.35, the next 50 cost ₹4.25, and so on up to ₹8.50 for units 201–250.
• Above 250 units a month: non-telescopic. All units are billed at one rate, chosen by your total. A home using 300 units pays ₹6.75 on every unit; at 450 units it pays ₹8.25 on every unit.

On top of the energy charge there is a fixed charge per month that depends on your slab and whether the connection is single-phase or three-phase. The calculator below uses single-phase fixed charges. Your bill also adds electricity duty (10% of the energy charge under the Kerala Electricity Duty Act), meter rent and any fuel surcharge, which the calculator leaves out.

BPL households with a connected load of 1,000 watts or less that use up to 40 units a month pay ₹1.50 per unit with no fixed charge.

Here is what the calculator gives for typical monthly consumption on a single-phase connection, before duty, meter rent and fuel surcharge. The working is simple below 250 units: add up each slab. At 200 units, that's 50 × ₹3.35 + 50 × ₹4.25 + 50 × ₹5.35 + 50 × ₹7.20 = ₹1,007.50, plus a ₹140 fixed charge, for ₹1,147.50. Above 250 units, multiply all units by one rate: 300 units × ₹6.75 = ₹2,025, plus ₹220, for ₹2,245.

KSEB reads most domestic meters every two months. For these bills it doubles each monthly slab: the first 100 units are charged at the 0–50 rate, the next 100 at the 51–100 rate, and so on, and the fixed charge is billed for both months. KSEB's own tariff circular shows this in its ready reckoner for bi-monthly consumers. So the quick method is:

At 250 units a month you are still on telescopic slabs, so the first 200 units are billed at the cheaper rates. At 251 units every unit moves to ₹6.75 and the fixed charge rises from ₹160 to ₹220. The monthly bill goes from ₹1,592.50 to ₹1,914.25, about ₹322 more for one unit. On a two-month bill the same line sits at 500 units.

If you're close to the line, spread heavy loads across the cycle, check the meter midway, and switch off water heaters and pumps when they aren't needed. Homes above 250 units with a three-phase connection are billed on time-of-day rates, where evening use costs more, so shifting loads to daytime helps there too.

KSEB identifies each connection by a 13-digit consumer number printed on the bill. You can pay on KSEB's quick-pay page at wss.kseb.in, at a section office, or through a Bharat Connect (BBPS) app. On Subspace, choose KSEB in the electricity list, enter the consumer number, confirm the amount the board returns, and pay by UPI. KSEB's helpline is 1912. If your household also pays a Kerala Vision broadband bill, see Kerala Vision broadband.