How solar savings work under net billing
In 2026 NEPRA moved from net metering to net billing. The difference is huge for your bill. Under net metering, a unit you exported cancelled a unit you imported. Under net billing, the two are priced separately: units you import from the grid cost your full retail tariff, while units you export are bought back at a low rate (about Rs 11/unit).
The practical takeaway: use your solar power as you generate it. Running your heavy loads (AC, pumps, machines) during daylight avoids paying the retail import rate, which is worth several times more than exporting the same unit. Because of this, a system sized close to your daytime consumption — rather than an oversized one built to export — usually gives the fastest payback.
Sizing your system
A well-installed 1 kW system in Pakistan produces roughly 130 units per month (about 4–5 units a day, after real-world losses). Divide your monthly units by 130 for a starting size — the calculator does this and suggests a kW figure for you.
Frequently asked questions
Estimates only. Buyback rates, tariffs and equipment prices vary by DISCO, consumer category and installer — confirm before you invest.