Free Solar Calculators & Buying Guides
Everything you need to estimate costs, calculate savings, and decide if solar is right for your home — before talking to any salesperson.
Cost & Savings Calculators
Highest trafficSavings Tool
Solar Savings Calculator: How Much Will Solar Save You?
Month-by-month savings based on your energy usage, utility rates, and system size. See your exact break-even point.
Savings Tool
Solar Payback Period Calculator: When Does Solar Break Even?
Enter your system cost and monthly savings to find exactly when your panels pay for themselves.
Financing
Solar Loan & Financing Calculator: Monthly Payments Explained
Compare solar loans, leases, and PPAs side by side with real monthly payment estimates.
Cost Calculator
Solar Panel Cost by State: FL, CA, NY, TX & More
State-by-state pricing guide with average costs, local incentives, and utility rate comparisons.
Incentives
Solar Tax Credit & Rebate Calculator: Federal ITC + State Incentives
Calculate exactly how much the 30% federal ITC saves you, plus state and utility rebates stacked on top.
ROI & Worth It
Solar ROI Calculator: Is Solar Worth It for Your Home?
Full 25-year return on investment breakdown combining savings, incentives, and system cost.
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Solar Savings Calculator — Free Global Tool
Enter your country and monthly bill — get your exact monthly, annual, and 25-year solar savings in your local currency. 142 countries.
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Solar Payback Period Calculator — Find Your Break-Even Date
Find out exactly when your solar panels will pay for themselves. Select your country, financing type, and roof exposure — get your break-even date instantly.
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Solar ROI Calculator — Is Solar Worth It in Your Country?
Calculate your 25-year return on investment, annual ROI percentage, and net profit. Compare solar against stocks, bonds, and savings accounts.
Off-Grid
Off-Grid Solar System Cost Calculator: What You Need to Know
Size your off-grid system including batteries and inverters. Very specific search with very little competition.