Watt, Solar Calculator App helps homeowners and small businesses estimate solar energy production, choose system size, and compare costs and savings using local irradiance and your electricity usage.

Features

• Estimate monthly and annual energy generation based on location, panel wattage, and tilt
• Calculate recommended system size and approximate number of panels for your load
• Compare estimated installation cost, long-term savings, and simple payback period
• Include basic battery storage sizing and a shading adjustment factor
• Export results as a summary to share with installers or advisors

How Watt, Solar Calculator App works

Enter your location, average electricity consumption, and panel specifications. Watt, Solar Calculator App uses standard solar resource data and your inputs to produce clear, actionable estimates that help you plan or discuss system options with professionals.