TATA 3.3kW Ongrid Solar System: Complete Details 2025
1. Cost of TATA 3.3kW Ongrid Solar System
Price Range (Without Subsidy): ₹1,70,000 – ₹2,00,000
Typical Final Cost (After Central Government Subsidy): As low as ₹92,500 with government subsidy under the PM Surya Ghar: Muft Bijli Yojna (₹78,000 subsidy for 3kW systems)‒actual subsidy credited to your bank account.
Price Variation: Price depends on your location, installation charges, and minor equipment choices (mountings, inverters, etc.).
2. Per Day Unit Generation
Average Daily Output: 12–15 units (kWh) per day for a 3–3.3kW system in Indian sunlight conditions.
Annual Output Estimate: 4,200–5,400 units (kWh) per year for a well-sited system.
3. Structure and System Components
Solar Panels: TATA 575W mono bifacial panels or similar high-efficiency modules.
On-grid Inverter: Solax PCU 3.3kW or comparable MNRE-approved inverter.
Mounting Structure: Weather-resistant, corrosion-proof (galvanized iron or aluminum) frame specifically designed for high wind and rooftop safety.
Earthing & Protection: Three independent earthing systems—for the inverter, solar structure, and lightning arrestor.
Cables & Accessories: Proper insulated copper cables (MNRE-compliant), connectors, ACDB/DCDB (distribution boxes), and safety fuses.
Area Required: 15–20 sq. meters (about 180–220 sq. ft.), shade-free rooftop.
Warranty: 25 years on panels, 5–10 years on inverter.
4. PSU & Certification Details
TATA Power Solar: MNRE & ALMM certified products (required for subsidy).
Complies with: Required government/utility safety and grid codes.
Subsidy Eligibility: Must select from MNRE-approved brands and vendors.
Major Partners: Supported by Tata Power Solar, PM Surya Ghar scheme, and DISCOM partners.
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