SOLAR PV & INVERTER SIZING ENGINE
Solar ROI, Capacity & Inverter Sizing Calculator.
Enter your monthly electricity consumption or bill to calculate required solar plant rating (kWp), rooftop area, annual generation, 25-year financial returns, and microinverter vs string inverter architecture.
Step 1: Installation Parameters
Configure Your Energy Profile
Monthly Consumption:
kWh
Calculations are engineered for Kerala climatic conditions (average ~4.2 sun-hours/day) and KSEB Bi-Directional Net Metering Regulations.
Recommended System Rating
4kWp
Grid-Connected Solar Photovoltaic PlantEst. Rooftop Footprint~340 sq.ft(32 m² shadow-free area)
Annual Yield5,520units / year
Annual Savings₹40,500KSEB bill offset
Estimated Payback~6.1 YearsCapex recovery
25-Year Net Financial Gain₹1,041,843
Lifetime CO₂ Averted112.5 tonnes
Inverter Architecture Assessment
Modern Multi-MPPT String Inverter (Recommended)Optimal Cost-to-Performance Ratio
Balanced residential setup with dual string inputs for varying daylight angles, robust surge protection, and low maintenance overhead.
Proven reliability with local service support in Kerala
Includes site shading analysis, single-line diagram (SLD), and KSEB net-metering paperwork.
4.5 TonnesAnnual Greenhouse Gas Avoidance
110 TreesEquivalent Forest Carbon Capture
25 YearsLinear Solar Panel Performance Warranty