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.

Can I use this for K-Electric too?

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

SOLAR

Solar Payback Calculator (2026 Net Billing)

Full solar payback model with 2026 net-billing export rates, panel degradation and annual tariff hikes.

Monthly bill (Rs.)Monthly units (kWh)System size (kW)Install cost per kW (Rs.)Rs. 150k–220k typical (2026)% exported to gridRooftop average 25–40%Import (buy) rate Rs./unitExport (sell) rate Rs./unitNet-billing 2026: ~Rs. 11–13Annual panel degradation %Annual tariff hike %Historical avg 8–15%

Monthly generation945 units

Self-consumption offsetRs. 27,000

Export credit (net billing)Rs. 3,402

Total monthly savingsRs. 30,402

System costRs. 1,260,000

Simple payback3.5 yrs

Real payback (degrade + tariff hikes)3.2 yrs

Net savings over 25 yearsRs. 22,639,215

Defaults assume Pakistan's average 4.5 peak-sun-hours/day and the 2026 net-billing regime (SRO 251(I)/2026) where surplus is bought back at ~Rs. 11–13/unit rather than the old Rs. 22–27/unit net-metering credit.

Frequently asked questions

Solar Savings Calculator Solar Load Calculator Net Metering Calculator Home Energy Audit

Solar Payback Calculator (2026 Net Billing)

Frequently asked questions

Is this calculator free?

Which tariff year is this based on?

Can I use this for K-Electric too?

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