Solar Panel Cost & Output
Estimate system size, cost, and savings for home solar
Thinking about going solar? This calculator estimates the system size you need to offset your electric bill and how much it might cost.
Calculator Inputs
$
Avg daily sun hours (US avg: 4-5)
$
Installed cost (before incentives)
Results
Enter values above to see your results
How It Works
We estimate your energy usage from your bill, then determine system size based on sun hours. Cost is calculated per watt.
Tips & Best Practices
- •The Federal Solar Tax Credit (ITC) allows you to deduct 30% of the cost (as of 2024).
- •South-facing roofs get the most sun.
Frequently Asked Questions
How many panels do I need?
An average home needs between 20-25 panels (assuming 400W panels) to cover 100% of usage.
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