Quick Answer
Net metering or prosumer connection allows a solar user to consume electricity from their own system, import electricity from the grid when needed, and export surplus solar electricity back to the grid. For payback, the important point is simple: a unit used directly at home is not the same as a unit exported to the grid.
Bijli Hisab keeps this difference visible because Pakistan's prosumer rules and tariff treatment are policy-sensitive. We use official NEPRA references for rules and tariff source links, while market price and payback numbers remain planning estimates.
Why Self-Use and Export Are Different
What the Official Sources Tell Us
The safest public explanation is to treat net metering as an official regulatory subject, not a fixed marketing promise. NEPRA regulations define the prosumer framework, while tariff pages and government notifications affect the actual billing value of imported and exported units.
How This Affects Solar Payback
A home that uses more electricity during daylight hours usually gets stronger solar savings because more generated units are used directly. A home that exports most daytime production may still save money, but the result depends more heavily on the current export credit and tariff treatment.
This is why Bijli Hisab asks for daytime usage. It is also why the estimator avoids promising one universal payback number for every household. The same 5kW or 10kW system can perform differently when usage pattern, roof shade, system losses, and export share change.
Before You Sign an Installer Quote
A serious solar quote should explain the net-metering or prosumer scope clearly. If the installer only gives a total price and says "net metering included", ask for the details in writing.
- Confirm whether the quote includes prosumer or net-metering application support
- Ask who is responsible for documentation, drawings, testing, and DISCO follow-up
- Confirm bidirectional or AMI meter scope, meter cost, and expected approval timeline
- Check inverter compliance, protection devices, earthing, isolators, and wiring scope
- Verify sanctioned load, proposed system capacity, and whether your connection supports it
- Keep written terms for export credit assumptions because policy and tariff treatment can change
Planning Notes for 2026
Use This in Your Estimate
Enter your monthly bill or units, then adjust daytime usage. If daytime usage is low, the calculator will treat more production as exported. If daytime usage is high, more solar units are treated as direct savings against imported electricity.
Run a source-backed estimate