Community Solar Savings Calculator
Calculate your savings from a community solar subscription. Compare your utility rate to the community solar rate and estimate annual bill reductions.
Free Solar Calculators
17 toolsSolar panel sizing, savings, payback, and incentive calculators. Browse our free solar tools below — no sign-up required.
Off-Grid Solar Sizing Calculator
Size an off-grid solar system with battery storage for autonomous living. Calculate panels, batteries, and charge controller requirements.
Solar + Battery Savings Calculator
Estimate additional savings from pairing solar panels with battery storage. Calculate self-consumption gains and peak rate arbitrage value.
Solar ITC (Investment Tax Credit) Calculator
Calculate your federal solar Investment Tax Credit (ITC) based on total system cost. Estimate the 30% federal tax credit for residential solar installations.
Solar LCOE Calculator
Calculate the Levelized Cost of Energy (LCOE) for your solar system. Compare your solar electricity cost per kWh against utility rates.
Solar Net Metering Calculator
Calculate your annual net metering credits from excess solar energy exported to the grid. Estimate your credit value based on export rates.
Solar Panel Count Calculator
Calculate how many solar panels you need based on your system size in kW and individual panel wattage. Free panel count estimator for residential and commercial installs.
Solar Panel Degradation Calculator
Calculate how solar panel output declines over time due to degradation. Estimate year-by-year production and total lifetime energy output.
Solar Panel Output Calculator
Estimate daily and annual solar panel output from wattage, peak sun hours, and system derate factors for planning and quote comparisons.
Solar Payback Period Calculator
Calculate how many years it takes for solar panels to pay for themselves through electricity savings. Free solar payback estimator with incentive support.
Solar PPA vs Lease vs Buy Calculator
Compare the net present value of a solar PPA, lease, and cash purchase over 25 years. Find the best solar financing option for your home.
Solar ROI Calculator
Calculate the return on investment for your solar panel system over its lifetime. Compare solar ROI against other investments.
Solar Roof Area Needed Calculator
Calculate the roof area required for your solar panel installation based on panel count and dimensions. Free solar roof space estimator.
Solar Savings per Year Calculator
Estimate your annual electricity savings from solar panels based on system production and utility rates. Free solar savings estimator.
Solar System Size Calculator
Determine the right solar system size in kW based on your annual electricity usage, peak sun hours, and system efficiency. Free solar sizing tool.
SREC Value Calculator
Calculate the annual value of Solar Renewable Energy Certificates (SRECs) based on system size, capacity factor, and current SREC market prices.
State Solar Incentive Calculator
Calculate total solar incentives by combining federal ITC with state rebates, tax credits, and utility incentives. Estimate your true net solar cost.