Solar Panel Calculator — Is Solar Worth It for Your Home?
Calculate the return on investment for rooftop solar panels. Estimate monthly electricity savings payback period and 25-year total savings.
Rooftop solar panels have become increasingly affordable with costs dropping 70% over the past decade. A typical 5kW residential system costs Rs 2.5-3.5 lakh in India after subsidies $12000-18000 in the US or £5000-8000 in the UK. With electricity bills eliminated or drastically reduced most systems pay for themselves in 4-7 years and then provide free electricity for 15-20 more years generating total savings of 3-5x the initial investment.
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ROI Calculator
Key Information
| Parameter | Details |
|---|---|
| 5kW System Cost (India) | Rs 2.5 - 3.5 lakh (after subsidy) |
| Monthly Savings (India) | Rs 2000 - Rs 5000 |
| Payback Period | 4-7 years typically |
| Panel Lifespan | 25-30 years with warranty |
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Use Calculator NowFrequently Asked Questions
How much can solar save per month?
A 5kW system generates approximately 600-750 units (kWh) per month in most Indian cities. At Rs 7-10 per unit this saves Rs 4200-7500 per month or Rs 50000-90000 per year. In the US a similar system saves $100-$200/month. Actual savings depend on your location sun exposure electricity rate and consumption pattern.
What is the payback period for solar panels?
In India with government subsidies (40% for first 3kW) payback is typically 4-5 years. Without subsidies it is 6-8 years. In the US with the 30% federal tax credit payback is 6-9 years depending on electricity costs and state incentives. After payback you get essentially free electricity for the remaining 20+ years of panel life.
Are solar panels worth it in 2026?
Yes solar is one of the best home investments available. The internal rate of return is typically 15-25% far exceeding fixed deposits or most other investments. With electricity prices rising 5-8% annually the savings increase each year. Even if you sell the home studies show solar panels increase property value by 3-4%. The environmental benefits are a bonus.
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Last updated: March 2026