Solar savings in Pakistan depend on three variables: your current monthly electricity bill, the size of the system you install, and the all-in installation cost. This calculator estimates your monthly savings, payback period, and 25-year return on investment based on these inputs.
How to use: Enter your average monthly electricity bill, the solar system size in kW, and the total installed cost. Use your last 3 months' bills averaged for a more accurate monthly figure — avoid using a single peak-summer month which may overestimate annual savings.
Enter your details to calculate your estimated solar savings, payback period, and 25-year return on investment.
Assumes 4.5 peak sun hours/day and 80% system efficiency. Actual savings depend on your specific electricity tariff, usage patterns, and net metering availability.
Reading Your Solar ROI
The monthly savings figure shows the portion of your bill offset by solar generation. Payback period is how many years until cumulative savings equal the installation cost. The 25-year ROI assumes stable electricity rates — in practice, Pakistani electricity tariffs have increased significantly every year, meaning actual savings and ROI are often better than this conservative estimate. Net metering allows additional savings if you export surplus power to the grid.
Frequently Asked Questions
It assumes 4.5 peak sun hours per day — accurate for most of Pakistan but higher in Balochistan and lower in coastal Karachi. It also assumes the system generates at 80% efficiency. Actual savings depend on your roof orientation, shading, panel angle, and whether you get net metering approved.
On-grid solar without battery reduces but doesn't eliminate your bill — you still pay fixed charges (DISCO connection fee, TV licence, GST on fixed charges) regardless of generation. Typical bills in Lahore drop from Rs. 15,000–25,000/month to Rs. 500–1,500/month (fixed charges only) with a well-sized system.
Solar panel prices have already dropped 35–40% since 2022. Further drops will be incremental. Every month you delay, you continue paying current electricity rates. For most Pakistani households currently paying over Rs. 10,000/month, the financial case for installing now is strong.
Net metering credits your DISCO account for surplus solar electricity you export to the grid — reducing future bills. A well-sized system with net metering can effectively create bill credits in summer that offset winter months when solar generation is lower. See our net metering guide.