Solar Savings Calculator
Enter your current electricity bill and proposed solar system size to calculate monthly savings and payback period. A 5 kW on-grid system typically saves Rs. 8,000-15,000/month with a 3-5 year payback. See net metering guide for maximum savings.
Calculate Solar Savings
Solar System Costs and Savings by Size — Pakistan 2026
| System Size | On-Grid Cost | Monthly Savings | Annual Savings | Payback Period |
|---|---|---|---|---|
| 3 kW | Rs. 450-600K | Rs. 5,000-8,000 | Rs. 60-96K | 5-7 years |
| 5 kW | Rs. 750K-1M | Rs. 8,000-15,000 | Rs. 96-180K | 4-6 years |
| 10 kW | Rs. 1.5-2M | Rs. 15,000-30,000 | Rs. 180-360K | 3-5 years |
| 15 kW | Rs. 2.25-3M | Rs. 25,000-45,000 | Rs. 300-540K | 3-5 years |
Factors That Affect Your Solar ROI
Solar savings depend on three factors: your current electricity bill (higher bills = faster payback), system size relative to consumption, and whether you have net metering (which lets you sell excess power back to the grid). In Pakistan's sunny climate, solar panels generate 4.5-5.5 peak sun hours daily — among the highest in South Asia.
The payback calculation is straightforward: total system cost divided by annual savings equals years to break even. After payback, you get 15-20 years of near-free electricity. With current electricity rates rising 15-25% annually, solar payback periods are actually getting shorter each year.
Electricity tariff level matters most. A household paying Rs. 45/unit (non-protected, 300+ units) saves twice as fast as one paying Rs. 22/unit (protected, under 200 units). The higher your current rate, the faster solar pays for itself.
Net metering doubles the value. Without net metering, excess daytime generation is wasted. With it, every excess unit earns credits on your bill. Apply through your DISCO — see net metering application guide.
Size your system: solar panel size calculator. Compare system types: on-grid vs off-grid. Check panel brands: Tier 1 solar brands in Pakistan. Government subsidy: Roshan Gharana scheme.
Battery storage kills ROI for bill savings alone. Adding batteries (for load shedding backup) increases system cost by 60-80% but doesn't generate more savings. Only add batteries if load shedding backup is essential for you — otherwise, on-grid without batteries gives the best financial return.
Real-World Solar Savings Example
Consider a Lahore household with a Rs. 15,000/month electricity bill (approximately 400 units). A 5 kW on-grid system costs Rs. 850,000 installed. With net metering, the system generates ~650 units/month — covering the entire bill plus earning credits. Monthly savings: Rs. 15,000. Annual savings: Rs. 180,000. Payback: 850,000 ÷ 180,000 = 4.7 years. After payback, that's Rs. 180,000/year of free electricity for the next 20 years — a total lifetime savings of Rs. 3.6 million on an Rs. 850,000 investment.
Now compare: the same household choosing off-grid with batteries pays Rs. 1,400,000. The batteries need replacement every 5-7 years (Rs. 300,000-500,000 each time). Off-grid payback extends to 7-8 years, and total lifetime savings are lower due to battery replacement costs. The clear winner financially is on-grid with net metering — unless load shedding backup is essential for your situation.
Estimates only. Calculator results are approximate. Actual amounts vary based on your specific provider, location, and applicable rates. Use for planning — verify with official sources.
Solar Savings — Investment Return Questions
On-grid systems: 3-5 years typically. Off-grid with batteries: 5-8 years. After payback, you get 15-20 years of near-free electricity. Higher electricity bills and net metering accelerate payback.
If your bill is under Rs. 5,000/month, the payback period extends to 7-10 years. Solar is most valuable for bills above Rs. 10,000/month where payback drops to 3-5 years. Calculate your specific case using this calculator.
Yes. The CM Punjab Roshan Gharana scheme offers 30-50% subsidy on residential solar panels. See how to apply for the solar subsidy.