MEPCO Bill Calculator 2026: Units, Slab Rates & Total

A MEPCO bill is not one flat rate times your units. It’s a stack: an energy charge built from slabs, a fixed charge tied to your sanctioned load, a fuel and a quarterly adjustment, then 18% GST on top. The calculator below assembles that stack from the current NEPRA tariff so you can see the real number and exactly where it comes from before the paper bill lands.

Enter your units, pick your category, set your load, and press Calculate. Every line is shown, so you can follow the total the way MEPCO builds it.

The rates it uses (SRO 279(I)/2026)

These are the domestic rates the federal government notified through SRO 279(I)/2026, effective 12 February 2026. Every distribution company, MEPCO included, bills this same schedule.

Unprotected (per unit):

Protected: Rs 10.54 up to 100 units, Rs 13.01 for 101–200, with a Rs 200–300/kW fixed charge. Lifeline (100 units or less for a year): Rs 3.95 up to 50 units, Rs 7.74 for 51–100, no fixed charge.

On top of energy: an FC surcharge of Rs 3.23 per unit (not for lifeline), the month’s fuel adjustment, the quarterly adjustment, and 18% GST. A minimum charge of Rs 75 (single-phase) or Rs 150 (three-phase) applies to very low bills.

The part that catches people: two ways of billing

This is where most calculators, and most bill shocks, go wrong.

• Protected and lifeline homes are billed telescopically. Each block of units is charged at its own rate. A protected home using 200 units pays 100 at Rs 10.54 and 100 at Rs 13.01, so Rs 2,355 in energy charge.
• Unprotected homes are billed on a landing slab. The whole month is charged at the single rate of the slab your total lands in, with no lower-slab discount. An unprotected home using 200 units pays all 200 at Rs 28.91, so Rs 5,782.

Same 200 units, more than double the energy charge. The category, not the usage, drives it.

Why one extra unit can cost thousands

Because of landing-slab billing, crossing 200 units doesn’t just add the price of the extra units. It moves you out of protected rates entirely for the next six months, and it re-rates every unit at the higher unprotected slab.

Compare the last protected month with the first unprotected one:

• 200 units, protected: Rs 2,355 energy charge.
• 201 units, unprotected: 201 × Rs 33.10 = Rs 6,653 energy charge.

One unit turned a Rs 2,355 charge into Rs 6,653, before the fixed charge and tax. This is the single most expensive line to cross on a MEPCO connection, and the reason the calculator warns you when you’re near it. If you want to watch it across the year, our bill history tool flags every month you went over.

The fixed charge people forget

Alongside units, you pay a fixed charge for every kilowatt of your sanctioned load, the capacity printed as “San Load” on your bill. It’s Rs 275 to Rs 675 per kW for unprotected homes, rising with your slab, and Rs 200 to Rs 300 for protected homes. Lifeline consumers pay none.

So two homes using the same units can still owe different amounts if one has a 2 kW load and the other 5 kW. The calculator asks for your load for exactly this reason; most others ignore it and under-count your bill.

A worked 300-unit example

For a single-phase unprotected home using 300 units with a 2 kW load, on the current fuel figure:

• Energy charge: 300 × Rs 33.10 = Rs 9,930
• Fixed charge: 2 kW × Rs 350 = Rs 700
• FC surcharge: 300 × Rs 3.23 = Rs 969
• Quarterly adjustment: 300 × −Rs 1.9857 = −Rs 596
• GST at 18% on the subtotal
• Total: about Rs 12,900

Change any input above and the calculator redoes this instantly. The two figures that shift each cycle, the fuel and quarterly adjustments, are editable so you can match your own bill to the paisa.

Reading the answer against your real bill

Treat the result as a close estimate, not a promise. Three things move the final number:

• The fuel adjustment changes monthly and is set two months after the electricity was used, so update that field from your latest bill for an exact match.
• Arrears or installments carried from earlier months aren’t part of a fresh estimate.
• Rounding on the printed bill can shift the total by a rupee or two.

One honesty note worth knowing: the per-kW fixed charge is under a review petition at NEPRA, so it may change before the next annual rebasing, due in January 2027. When it does, the rates here get updated.

Frequently asked questions