Solar Panel Calculator

Estimate how many solar panels you need, calculate potential energy production, and see your savings. Based on roof size, location, and electricity usage. Pure client-side.

Your average monthly electricity cost in USD
Approximate area available for solar panels
Average daily peak sun hours for your location
Cost per kWh from your utility bill

Calculation Assumptions

About Solar Panel Calculator

This solar panel calculator helps you estimate the number of solar panels needed for your home or business, potential energy production, cost savings, and environmental impact. All calculations happen in your browser — no data is sent to any server. Use it as a starting point for your solar journey and consult with professional installers for detailed quotes.

Features