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

Convert units to kilograms of CO₂ using Pakistan's grid emission factor.

Monthly units (kWh)Grid emission factor (kg CO₂e/kWh)Pakistan grid ~0.45

Monthly CO₂e180 kg

Yearly CO₂e2,160 kg (2.16 t)

Equivalent trees needed103 trees/year