Net Metering vs Net Billing Calculator — What February 2026 Changed for Your Bill
NEPRA replaced 1:1 net metering with net billing on 8 February 2026. Exported units now earn roughly Rs 11 each, while imported units still cost Rs 50–65. This calculator prices a month of your generation under both regimes, and shows how the answer swings on one variable: the share you consume yourself.
For a 10 kW system consuming 40% of its own output, the two regimes come out almost level — Rs 31,920 against Rs 32,400. Push self-consumption to 70% and the same system is worth Rs 45,960 a month. Self-consumption is now the entire game.
Rates on this page last reviewed 26 July 2026. Every field below is editable — the defaults are a starting point, not a claim about your bill. We sell no hardware and take no installer commission; see how we verify.
Monthly value under old net metering: Rs 32,400 · under net billing (Feb 2026): Rs 31,920
Raising self-consumption (daytime appliances, batteries, EV charging) is now worth ~Rs 39 more per unit than exporting. That is the whole game.
How this calculator works — the actual arithmetic
- Generation = system kW × 120 units a month, the same conservative Pakistani yield assumption used across this site.
- Old net metering value = total generation × Rs 27, the 1:1 retail credit that applied before February 2026.
- Net billing value = (self-consumed units × Rs 50 avoided import) + (exported units × Rs 11 export credit).
- Nothing is modelled beyond that: no slabs, no seasonality, no fixed charges.
Worked example — a 10 kW rooftop at 40% and at 70% self-consumption
The 40% rows are the calculator’s defaults; type 70 into the self-consumption field to reproduce the third.
| System size | 10 kW |
|---|---|
| Monthly generation | 1,200 units |
| Self-consumption cases | 40% and 70% |
| Old net metering (1:1 at Rs 27) | Rs 32,400/month |
|---|---|
| Net billing at 40% self-use | Rs 31,920/month |
| Net billing at 70% self-use | Rs 45,960/month |
| Value of moving 40% → 70% | + Rs 14,040/month |
Where these numbers come from
The Rs 11 export rate, the Rs 50–65 import band and the February 2026 date are the figures in our net metering vs net billing explainer and the NEPRA Prosumer Regulations 2026 walkthrough, both sourced to NEPRA. The 120 units per kW per month yield matches the 1,250–1,450 units our 10 kW guide records for that size, taken at the conservative end.
Read the comparison carefully, because it is not like-for-like and we are not going to pretend otherwise. The Rs 27 is the retail credit of the old scheme; the Rs 50 is a current unprotected-slab import price. So the correct reading of "Rs 31,920 vs Rs 32,400" is not "net billing costs you Rs 480" in real terms — it is "at 40% self-consumption, a generated unit is worth about the same as it used to be, and above that it is worth more, because the tariff you avoid has risen faster than the credit you lost." The policy still hurt: what it removed was the option to bank surplus at retail value.
What this calculator does not know
- Your slab. Rs 50 is one point in a band that runs Rs 50–65 for unprotected residential consumers, and protected consumers pay far less — which makes their solar worth far less too.
- Whether you are grandfathered. Existing net-metering users and applications filed before 8 February 2026 keep their 1:1 contracts until expiry. If that is you, the old-net-metering row is still your reality and the rest of this page is a forecast of what happens at renewal — see your rights as a grandfathered user.
- Seasonality. 120 units per kW is a flat monthly average. June and December are not the same month.
- What your bill actually says. If the settlement looks wrong, the net-billing settlement audit guide and the green-meter reading guide are the practical next steps.
- Future rules. The prosumer framework changed five times in the twelve months to early 2026. Any number on this page is a July 2026 snapshot.
Frequently asked
What is the net billing export rate in Pakistan?
Roughly Rs 11 per exported unit under the NEPRA Prosumer Regulations 2026, against imported units costing Rs 50–65 for unprotected residential consumers.
Is solar still worth it in Pakistan after net metering ended?
Yes, but the design changed. Value now comes from avoiding an import at Rs 50–65 rather than banking an export at retail, so systems are sized for daytime self-consumption and paired with storage or shifted loads instead of being oversized to export.
Am I grandfathered under the old net metering scheme?
If you had a live net-metering contract, or an application filed before 8 February 2026, you keep 1:1 terms until that contract expires. New connections go on to net billing.
How do I raise my self-consumption share?
Move controllable loads into daylight — washing, pumping, ironing, pool and water pumps — add storage to shift the evening peak, and charge an EV or e-bike at midday rather than overnight.
Guides that explain the numbers
Products this applies to
Category hub — individual battery pages are still being written
Solar panels