Solar Panel Calculator
Calculate optimal solar panel system size, energy production, and return on investment. Design residential and commercial solar installations with accurate cost-benefit analysis.
Energy Requirements
Average monthly electricity consumption from utility bills
Average daily peak sun hours for your location
System Configuration
Wattage rating of individual solar panels
Overall system efficiency including inverter losses
Available roof space for panel installation (optional)
Financial Analysis
Current utility electricity rate
Cost per watt for solar panels
Installation and additional component costs per watt
Combined federal and state tax credits/rebates
Solar System Analysis
Enter your energy requirements and system parameters to see solar sizing recommendations and financial analysis