Is this calculator free?

Yes — free, no sign-up, no reference number required.

Which tariff year is this based on?

The most recent NEPRA notification for 2025-26. We update whenever NEPRA revises rates.

K-Electric's tariff mirrors the national inclining-block structure, so the estimate applies with a small margin of error.

SOLAR

Enter appliances and hours; get recommended kW, panels and battery capacity.

Daily consumption (kWh)Peak sun hoursPakistan avg: 5-5.5Battery backup (hours)System voltage

Recommended solar5 kW

Number of 550W panels10

Battery bank174 Ah @ 48V