1. Lower Electricity Bills — From Month One
The most immediate benefit of rooftop solar is the reduction in your monthly electricity bill. A 3kW solar system generates approximately 10–13 units per day in India, enough to offset 300–400 units per month. For a household paying ₹6–₹9/unit (across multiple states), this translates to ₹1,800–₹3,600 in savings every month.
Because most state electricity boards (DISCOMs) use telescopic tariff slabs — where higher consumption attracts higher rates — solar eliminates the expensive top-slab consumption first. A home paying ₹8/unit for their last 100 units saves ₹800/month just by eliminating that slab.
| System Size | Units Generated/Month | Est. Monthly Savings |
|---|---|---|
| 1 kW | 90–120 units | ₹540–₹1,080 |
| 2 kW | 180–240 units | ₹1,080–₹2,160 |
| 3 kW | 270–360 units | ₹1,620–₹3,240 |
| 5 kW | 450–600 units | ₹2,700–₹5,400 |
2. PM Surya Ghar Muft Bijli Yojana — Up to ₹78,000 Subsidy
The Government of India's PM Surya Ghar Muft Bijli Yojana (launched February 2024) provides direct bank transfer subsidies to residential rooftop solar adopters:
- 1 kW system: ₹30,000 subsidy
- 2 kW system: ₹60,000 subsidy
- 3 kW and above: ₹78,000 subsidy (maximum)
This subsidy is credited directly to your bank account after installation by an MNRE-empanelled installer. For a 3kW system costing ₹1.80–₹2.10 lakh, the subsidy reduces net outlay to ₹1.02–₹1.32 lakh. Additionally, the scheme offers 300 free electricity units per month for eligible households, further reducing bills.
Use our PM Surya Ghar subsidy calculator to check your exact eligibility and benefit amount.
3. Energy Security for 25+ Years
Solar panels come with a 25-year performance guarantee (typically 80% of rated output at year 25) and a 10–12 year product warranty. Once installed, your solar system continues generating electricity for 25+ years, protecting you from electricity tariff increases. Most Indian DISCOMs have raised tariffs by 5–8% per year historically — solar locks in the cost of generation at near-zero marginal cost for 25 years.
With India's electricity tariffs expected to continue rising as coal prices remain volatile, this long-term price certainty is a major financial advantage for households and businesses.
4. Net Metering — Earn Credits for Excess Generation
Under the net metering policy (available in all major Indian states), surplus solar electricity exported to the grid is credited to your electricity account. This means:
- During the day when you're at work and generation exceeds consumption, units flow into the grid
- In the evening when you draw from the grid, those exported units offset your import
- Net billing means you only pay for the net units consumed from the grid
Most DISCOMs also allow annual settlement — carrying forward excess credits month to month and paying out the net surplus once a year.
5. Increased Property Value
Research across Indian real estate markets shows that solar-equipped homes sell for 3–7% more than comparable non-solar properties, and sell faster. A home with a 3kW system demonstrably saving ₹2,000+/month on electricity is a tangible financial asset for buyers. With solar adoption growing rapidly in India, this premium is expected to increase in future years.
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