Understanding transparent rooftop solar pricing in Bihar helps homeowners and commercial building owners budget accurately while avoiding substandard Balance-of-System (BOS) shortcuts. Below is the turnkey 2026–27 pricing breakdown covering DCR solar modules, string inverter, hot-dip galvanized structure, ACDB/DCDB protection, copper earthing, lightning arrestor, and DISCOM paperwork.
Bihar 1kW to 10kW On-Grid Solar Price Comparison (2026–27)
| Capacity | Approx. Roof Area | Turnkey Installed Cost (Before Subsidy) | PM Surya Ghar Subsidy | Effective Net Homeowner Cost |
|---|---|---|---|---|
| 1 kW | 80–100 sq.ft | ₹60,000 – ₹68,000 | ₹30,000 | ₹30,000 – ₹38,000 |
| 2 kW | 160–200 sq.ft | ₹1,18,000 – ₹1,32,000 | ₹60,000 | ₹58,000 – ₹72,000 |
| 3 kW | 240–280 sq.ft | ₹1,68,000 – ₹1,95,000 | ₹78,000 | ₹90,000 – ₹1,17,000 |
| 5 kW | 400–480 sq.ft | ₹2,75,000 – ₹3,15,000 | ₹78,000 | ₹1,97,000 – ₹2,37,000 |
| 10 kW | 800–950 sq.ft | ₹5,20,000 – ₹5,80,000 | ₹78,000 | ₹4,42,000 – ₹5,02,000 |
Factors That Affect Final Quotation Price
- Elevated vs Standard Structure: High-rise pergolas allowing usable roof terrace space beneath the panels require heavier galvanized steel sections.
- DCR Mono-PERC vs N-Type TOPCon Bifacial: TOPCon panels deliver 22%+ efficiency and better low-light yield at a slightly higher upfront module rate.
- DC Cable Length & Earthing Count: Three separate chemical/copper earthing pits plus an isolated lightning arrestor guarantee safety across monsoon lightning in Bihar.
Request a Bihar Rooftop Solar Site Survey
Planning a residential PM Surya Ghar system or commercial solar plant in Patna, Gaya, Muzaffarpur, Darbhanga, Bhagalpur, or anywhere across Bihar? Talk directly with SRISHTI SOLAR ENERGY (Mithapur HQ, Patna) at +91 8235441292 or request a custom quotation online.
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Published by Ritesh Kumar
Reviewed for factual solar and PM Surya Ghar accuracy by SRISHTI SOLAR ENERGY — Patna, Bihar & Dankuni, West Bengal. Last updated November 14, 2026.
Always confirm current DISCOM rules, subsidy eligibility, component availability, and written terms directly prior to installation.
