Solar Subsidy & ROI Calculator (2025)
Check how much subsidy you qualify for, your payback period, and monthly savings—computed in real time.
Solar Savings Estimator
Updated for PM Surya GharRecommended System
3 kW
~300 sq.ft needed
Govt. Subsidy
₹ 78,000
PM Surya Ghar
Net Project Cost
₹ 1,62,000
After Subsidy
Return on Investment
Payback: 3.4 YearsLifetime Savings (25 Years)
₹ 15,00,000
Cumulative Savings vs. Cost
Get a Free Detailed ROI Report
Includes detailed break-even analysis & shadow report.
How the Solar Subsidy & ROI Calculator Works
Transparency in every calculation based on MNRE guidelines.
1. System Sizing
We divide your monthly bill by the average unit rate (approx. ₹8/unit) and solar generation potential (1 kW ≈ 120 units/month) to recommend the optimal system size.
2. Subsidy Slabs (2025)
[cite_start]**1-2 kW:** ₹30,000/kW [cite: 274]
[cite_start]**2-3 kW:** ₹18,000/kW [cite: 274]
[cite_start]**3 kW+:** Capped at ₹78,000 [cite: 274]
3. Payback Period
Calculated by dividing the Net System Cost (after subsidy) by your Annual Electricity Savings. Usually 3-5 years for homes.
4. Lifetime Savings
Projected savings over 25 years, accounting for minimal panel degradation (0.5% per year).
State-Wise Solar Subsidy Chart (2025)
| State | Scheme | Extra State Subsidy? | Notes |
|---|---|---|---|
| Maharashtra | PM Surya Ghar | ❌ | DISCOM approval via MAHADISCOM portal required. |
| Gujarat | PM Surya Ghar | ✔️ | Highest adoption rate; seamless net metering. |
| Karnataka | PM Surya Ghar | ✔️ | Additional state incentives for farmers. |
| Tamil Nadu | PM Surya Ghar | ❌ | Strict net metering policies for larger systems. |
ROI Case Studies: Proven Results
5 kW Home – Pune
Residential solar success story demonstrating fast ROI for homes.
- Monthly Bill Before: ₹6,500
- Subsidy Received: ₹78,000
- Payback Period: 3.4 years
50 kW Commercial – Nashik
Commercial solar project achieving maximum savings and quick payback.
- Monthly Savings: ₹58,000/month
- Payback Period: 2.7 years
- Project Uptime: 99.9%
Get a Free Detailed ROI Report with Break-Even Analysis
No commitment. Just accurate numbers tailored to your home or business.
Calculator FAQs
How accurate is this calculator?
It provides a realistic, non-binding estimate based on current policies, average sunlight, and standard component costs. Actual quotes may vary after a physical site survey.
Do commercial users get subsidy?
No, capital subsidies are generally for residential sectors. However, commercial users benefit from 40% accelerated depreciation tax benefits.
What is the payback period?
It is the time it takes for the savings from your solar system to cover the initial installation cost. Typically 3-5 years for homes.