Solar Savings Calculator — How Much Will Solar Save You?
Calculate your exact annual solar savings based on your electricity bill, roof size and location. Includes 2026 federal 30% tax credit.
How to use this calculator
- Enter your average monthly electricity bill in dollars.
- Enter your usable roof area in square feet (south-facing roof is ideal).
- Adjust the daily sun hours for your area (use our state selector on the right for accurate data).
- Enter your local electricity rate in $/kWh (check your utility bill or use the state selector).
- Your estimated annual savings, system cost and payback period appear instantly.
Understanding your results
Annual savings are calculated based on the electricity your system would produce at current rates. As electricity prices rise (historically ~3%/year), your savings increase each year.
System size is estimated from your roof area and electricity usage. A 1kW solar system typically needs about 100 sq ft of roof space.
30% Tax Credit is the 2026 federal ITC applied automatically. This is a dollar-for-dollar reduction in federal taxes owed — not a deduction.
25-year profit shows your net financial gain over the system’s warrantied lifespan, accounting for the upfront cost minus tax credits.
Frequently asked questions
Direct answers for US homeowners.
Related solar guides
In-depth sizing, cost, and payback articles — with state-by-state data.