Solar Panel Payback Period Calculator (Pakistan)
Find out how long it takes for a solar system to pay for itself. Enter your system size, installation cost and average monthly electricity bill, and the calculator shows your payback period, long-term savings and ROI.
Your system details
Typical home systems in Pakistan are 5 to 20 kW.
Include panels, inverter, structure, wiring and labor.
With net metering, many homes save 80 to 95 percent.
Your solar payback results
Monthly savings
—
Payback period
—
Net savings (10 years)
—
Net savings (25 years)
—
Simple ROI over 25 years: —
Effective yearly return: —
How the math works
- Monthly savings = your monthly bill x savings percentage / 100.
- Payback months = installation cost / monthly savings.
- Payback years and months = payback months / 12, split into full years and remaining months.
- Net savings (10 years) = (monthly savings x 120 months) - installation cost.
- Net savings (25 years) = (monthly savings x 300 months) - installation cost.
- Simple ROI = (net savings over 25 years / installation cost) x 100.
This is a simple payback estimate. It does not include panel degradation, maintenance, inverter replacement or rising electricity tariffs, which usually make real savings higher over time. Dust on your panels also shrinks savings — estimate it with our Solar Panel Cleaning Savings Calculator.
Frequently asked questions
Most home systems in Pakistan pay for themselves in 2 to 4 years with net metering, thanks to high electricity tariffs and strong sunlight almost all year.
Yes. With a net meter, extra daytime units go back to the grid and reduce your bill, which is why the savings percentage is usually 80 percent or higher for well-sized systems.
No. This calculator gives a simple estimate based on your inputs. Actual savings depend on sunlight at your location, system quality, maintenance and future tariff changes.
Tier 1 panels usually carry a 25 year performance warranty and keep working well beyond that, which is why the calculator shows a 25 year savings estimate.