1. System Overview

• Type of System: On-Grid (Grid-Tied, without battery backup)
• Rated Capacity: 3 kWp (DC)
• Purpose: Residential rooftop solar installation under PM Surya Ghar Muft Bijli Yojana
• Estimated Free Units: Up to 300 units/month generated.

2. Major Components

1. Solar PV Modules
   • Technology: Mono PERC / Mono PERC Half-Cut (Preferred under scheme)
   • Wattage: 540 Wp – 550 Wp (typical)
   • No. of Panels: ~6 panels (540 Wp × 6 = 3,240 Wp; adjusted as per design)
   • Efficiency: ≥ 20%
   • Certifications: BIS / IEC 61215, IEC 61730
   • Warranty: 25 years performance (≥ 80% output at 25 years)
2. Grid-Tied Inverter
   • Capacity: 3 kW, Single Phase
   • MPPT Tracking: Yes (1–2 MPPTs)
   • Conversion Efficiency: ≥ 97%
   • Protections: Anti-islanding, Over/Under Voltage, Short Circuit, Overload
   • Communication: Wi-Fi / RS485 for online monitoring
   • Certifications: IEC / MNRE approved
   • Warranty: 5–10 years
3. Module Mounting Structure (MMS)
   • Material: Hot Dip Galvanized Steel / Aluminium Alloy
   • Design: Wind speed resistance up to 150 km/h
   • Tilt Angle: As per site latitude (10°–25° typically in India)
   • Corrosion Resistance: ≥ 80 microns galvanization
4. Balance of System (BOS)
   • Cables: UV Resistant DC Cables (4/6 sqmm), AC Cables (2.5/4 sqmm) copper as per load
   • Connectors: MC4 compatible IP67 certified
   • DCDB/ACDB: With MCB, SPD (Type II), Isolators, Fuses
   • Earthing & Lightning Arrestor: 2–3 GI/Copper Earthing as per IS 3043

3. Electrical Specifications

• DC Array Power: 3.0 kWp
• Operating Voltage (Vmp): ~300–450 V DC (depends on module configuration)
• Max DC Current: ~10–12 A (single string)
• AC Output Power: 3.0 kW @ 230 V AC, 50 Hz
• AC Output Current: ~13–14 A
• Power Factor: 0.9 Lag to 0.9 Lead
• Grid Compliance: As per DISCOM & CEA Regulations

4. Expected Performance

• Average Generation: 12–15 units/day (4,500–5,500 units/year, depending on location & solar radiation)
• Free Electricity Benefit: Up to 300 units/month free under the scheme (excess units adjusted with DISCOM bill)
• CO₂ Reduction: ~4.5 tons/year

5. Protections & Safety

• DC & AC Isolators
• DC SPD (Type II), AC SPD (Type II/III)
• Earthing: PV array earthing, inverter earthing, lightning protection
• Inverter with anti-islanding protection
• Net Metering (Bi-directional energy meter installed by DISCOM)

6. Standards & Compliance

• MNRE Approved Vendor & Components
• Standards: IEC 61215 / 61730 / 62109, IS 14286, IS 16221, IS 16169
• DISCOM Approval: Net metering as per state policy

7. Warranty & O&M