Watt, Solar Calculator App

Watt, Solar Calculator App helps homeowners and installers estimate solar system size, expected energy production, battery storage needs, and payback time from local consumption and site conditions.

About Watt, Solar Calculator App

Watt, Solar Calculator App provides clear calculations using user-provided electricity use and location data. The app supports metric and imperial units, allows selection of common panel and inverter specifications, and offers offline basic calculations for quick estimates.

Key features

• System sizing: estimate kW required based on consumption and roof orientation
• Production estimates: monthly and annual energy output using solar irradiance assumptions
• Storage guidance: battery capacity suggestions to meet autonomy goals
• Financial overview: simple payback and lifetime savings estimates using local energy rates
• Adjustable parameters: panel efficiency, tilt, shading factor, and inverter losses
• Save and share: exportable calculation summaries for comparison

How it works

• Enter average electricity use, location, and roof characteristics
• Choose panel and inverter specifications or use default values
• Review system size, estimated generation, and recommended battery capacity
• Compare scenarios to evaluate trade-offs between system size, storage, and cost