Free Solar ROI Calculator

Calculate Your Solar Panel ROI in 60 Seconds

Find out if solar panels are worth it for your home. Get instant estimates on cost, savings, and payback period.

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How This Solar ROI Calculator Works

Our solar panel ROI calculator uses industry-standard formulas to estimate your potential savings. Here's what we calculate:

  • System Size: Based on your home's square footage and energy usage, we estimate the optimal solar panel system size (typically 4-10 kW for residential homes).
  • Installation Cost: Using current market rates of approximately $3/watt before incentives, adjusted for the 30% federal solar tax credit.
  • Annual Savings: Estimated based on your current electric bill and typical solar offset of 70-90% of electricity usage.
  • Payback Period: The number of years until your energy savings equal your initial investment.

5 Factors That Affect Solar Panel ROI

1. Local Electricity Rates

Higher electricity rates mean greater savings from solar. If your rates are above $0.15/kWh, solar becomes increasingly attractive. California, Hawaii, and Northeast states typically see the best ROI due to high rates.

2. Sun Exposure & Climate

Solar panels work best in sunny climates. Arizona, New Mexico, and Southern California get the most sun hours per year. However, even cloudy states like Washington can see positive ROI due to high electricity rates and net metering policies.

3. Available Incentives

The 30% federal solar tax credit (ITC) significantly reduces upfront costs. Many states offer additional rebates, SRECs (Solar Renewable Energy Credits), or property tax exemptions that can improve ROI by 2-5 years.

4. Roof Condition & Orientation

South-facing roofs with minimal shade produce the most energy. If your roof needs replacement within 10 years, factor that into your total cost. A new roof adds $10,000-20,000 but ensures your panels last their full 25-30 year lifespan.

5. Financing Method

Cash purchases have the best ROI. Solar loans add interest (typically 4-8%) which extends payback by 2-4 years. Leases and PPAs have the lowest ROI but require $0 upfront. For maximum savings, pay cash or use a low-interest home equity loan.

Solar Panel ROI FAQs

Is solar worth it in 2026?+

Yes, for most homeowners. With the 30% federal tax credit extended through 2032, solar panel costs at all-time lows, and electricity rates rising 3-5% annually, the average payback period is 6-10 years. Over 25 years, you can save $20,000-$60,000 depending on your location and energy usage.

What is a good solar ROI?+

A payback period under 10 years is considered excellent. This translates to an annual return of 10%+ on your investment - better than most stock market returns with virtually no risk. Systems that pay back in 6-8 years offer exceptional ROI, while anything over 12 years may not be worth it unless you have specific environmental goals.

How much do solar panels cost in 2026?+

The average cost is $2.50-$3.50 per watt before incentives. A typical 6kW system costs $15,000-$21,000 before the federal tax credit, or $10,500-$14,700 after. Prices vary by location, installer, and equipment quality. Premium brands like SunPower or Tesla cost 10-20% more but often include better warranties and efficiency.

Do solar panels increase home value?+

Yes. Studies show solar panels increase home value by approximately $20 for every $1 reduction in annual energy bills. A system saving $1,500/year adds roughly $30,000 to your home's resale value. However, leased systems typically do not add value, and may complicate sales. Own your system for maximum benefit.

What's the best time of year to install solar?+

Late fall and winter often have the best pricing due to lower demand. However, you'll want your system active before summer when electricity usage peaks. Aim to install in March-May for optimal timing - you'll benefit from spring deals and have your system producing during the high-usage summer months.

How long do solar panels last?+

Modern solar panels typically last 25-30 years with minimal degradation. Most manufacturers guarantee 80-85% production after 25 years. Inverters usually need replacement after 10-15 years (cost: $2,000-$3,000). With proper maintenance, panels can continue producing power for 40+ years, though at reduced efficiency.

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