Detailed pricing guides by system size
Explore in-depth specifications, roof area requirements, and component costs for your exact size:
Turnkey residential solar installation cost matrix (2026)
Turnkey pricing includes ALMM-certified panels, grid-tie inverter, mounting structure, bi-directional net meter, and DISCOM paperwork:
| System Size | Gross Turnkey Cost | PM Surya Ghar Subsidy | Net Homeowner Cost | Est. Generation | Est. Payback |
|---|---|---|---|---|---|
| 1 kW System | ₹60,000 – ₹70,000 | - ₹30,000 | ₹30,000 – ₹40,000 | ~120 units / mo | 3.0 – 3.5 yrs |
| 2 kW System | ₹1,20,000 – ₹1,35,000 | - ₹60,000 | ₹60,000 – ₹75,000 | ~240 units / mo | 3.1 – 3.6 yrs |
| 3 kW System (Popular) | ₹1,80,000 – ₹1,95,000 | - ₹78,000 (Cap) | ₹1,02,000 – ₹1,17,000 | ~360 units / mo | 3.2 – 3.8 yrs |
| 5 kW System | ₹2,75,000 – ₹3,00,000 | - ₹78,000 (Cap) | ₹1,97,000 – ₹2,22,000 | ~600 units / mo | 3.8 – 4.2 yrs |
| 10 kW System | ₹5,20,000 – ₹5,75,000 | - ₹78,000 (Cap) | ₹4,42,000 – ₹4,97,000 | ~1,200 units / mo | 4.0 – 4.5 yrs |
Where does your money go? Solar cost breakdown
Component-wise cost allocation for a standard Indian rooftop solar project:
| System Component | Share of Total Cost | Included Hardware & Scope |
|---|---|---|
| Solar Photovoltaic Modules | 50% – 55% | Tier-1 ALMM mono PERC or TOPCon bifacial modules (Waaree, Adani, Tata) |
| Grid-Tie Inverter | 18% – 22% | Single/Three-phase string inverter with MPPT & mobile Wi-Fi monitoring |
| Mounting Structure & Cables | 12% – 15% | Hot-dip galvanized / aluminium structure, UV-resistant DC solar cables |
| Net Metering & Electrical BoS | 8% – 10% | ACDB/DCDB boxes, SPD surge protection, dual earthing kits, DISCOM liaison |
| Installation, Testing & Labor | 5% – 8% | Civil foundation, rooftop cabling, pre-commissioning testing |
Frequently asked questions
Why does solar price per watt decrease with larger system sizes?+
Fixed costs such as inverter procurement, DISCOM application paperwork, net meter testing fees, and installation labor do not scale linearly with system capacity. A 5 kW installation shares similar electrical overhead with a 3 kW system, resulting in economies of scale and lower price per watt.
What is the price difference between Mono PERC and TOPCon panels?+
TOPCon (Tunnel Oxide Passivated Contact) panels are approximately ₹3 to ₹6 per watt more expensive than standard Mono PERC modules. However, TOPCon modules offer 1%–2% higher efficiency and significantly lower degradation under high Indian ambient temperatures (above 40°C).
How much extra does a hybrid solar system with battery storage cost?+
Adding lithium-ion battery storage (typically 5 kWh to 10 kWh) increases the turnkey system cost by ₹1,20,000 to ₹2,50,000. Hybrid systems are recommended only for areas experiencing frequent daytime power cuts, as on-grid systems without batteries deliver the fastest payback (3–4 years).
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