Enter your city and system size to estimate installed cost, PM Surya Ghar subsidy, monthly savings, and payback period using real solar-hour and tariff data for South India.
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Estimate your solar system
indicative · 2026Estimates use city/state-average irradiance and PM Surya Ghar CFA slabs (₹30,000/kW up to 2kW, +₹18,000 for the 3rd kW, capped at ₹78,000, residential only). The subsidy applies to both on-grid and hybrid (net-metered) systems — it covers the solar capacity only, not battery storage. The electricity rate is auto-filled from your city’s average but check your latest bill and adjust it here for a more accurate result. Off-grid systems depend heavily on your load profile and aren’t covered by this tool — get in touch for a custom estimate. Actual pricing depends on roof condition, shading, panel/inverter/battery brand and a site survey — this is a starting point, not a quotation.
How this calculator works
This calculator gives you a quick, directional estimate based on your city, system size, and electricity rate. It uses average solar irradiation, tariff data, and standard rooftop performance assumptions to calculate savings, subsidy, and payback.
How the number is built
- Generation: System size × city peak sun hours × performance ratio.
- Savings: Monthly solar generation × your per-unit electricity rate.
- Subsidy: PM Surya Ghar central financial assistance for eligible residential rooftops.
- Payback: Net investment divided by first-year savings.
Solar potential by city
| City | Peak sun hours/day | Avg. tariff |
| Hyderabad, TS | 5.4 | ₹7.5/unit |
| Vijayawada, AP | 5.5 | ₹7.0/unit |
| Visakhapatnam, AP | 5.3 | ₹7.0/unit |
| Tirupati, AP | 5.6 | ₹7.0/unit |
| Warangal, TS | 5.4 | ₹7.5/unit |
| Guntur, AP | 5.5 | ₹7.0/unit |
| Chennai, TN | 5.2 | ₹6.5/unit |
| Coimbatore, TN | 5.3 | ₹6.5/unit |
| Madurai, TN | 5.4 | ₹6.5/unit |
| Bengaluru, KA | 5.1 | ₹8.0/unit |
| Kochi, KL | 4.8 | ₹7.8/unit |
PM Surya Ghar subsidy slabs (2026)
Residential rooftop systems can receive central subsidy support up to 3 kW, subject to scheme eligibility and approved installation norms.
| System size | Subsidy | Notes |
| 1 kW | ₹30,000 | ₹30,000 per kW |
| 2 kW | ₹60,000 | ₹30,000 per kW |
| 3 kW & above | ₹78,000 | ₹60,000 for first 2kW + ₹18,000 for the 3rd capped here |
Note below the table: Applies to residential rooftop connections only, installed by an MNRE-empanelled vendor using ALMM-listed panels. Commercial/industrial connections aren’t eligible for this central subsidy but can claim accelerated depreciation instead.
FAQ
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How accurate is this calculator?
It’s built for quick, directional estimates using city-level solar and tariff averages. Your actual output depends on roof orientation, shading, panel brand and local DISCOM rules a free site survey narrows that down to an exact quote.
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Does the subsidy apply to commercial rooftops?
No. PM Surya Ghar’s central subsidy is residential-only. Commercial and industrial installations instead benefit from accelerated depreciation and, in some states, separate incentive schemes.
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Can I install more than 3kW and still get the subsidy?
Yes, you can install up to 10kW under the scheme, but the central subsidy itself is capped at 3kW worth of capacity (₹78,000), regardless of how much larger your system is.
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What’s the difference between DCR and non-DCR panels?
DCR (Domestic Content Requirement) panels are manufactured in India using domestic solar cells. Government-subsidised residential rooftop schemes require DCR-listed modules non-DCR panels aren’t eligible for PM Surya Ghar.
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How long does installation take after I request a quote?
Typically a site survey happens within a few days, followed by DISCOM approval, installation and net-meter commissioning. End-to-end this usually runs 4–8 weeks, depending on your DISCOM’s processing time.