Solar Calculator: Clarity in Numbers

Most homes need between 15 and 25 solar panels, depending on your electricity usage, roof space, and local sunlight. Use Solarity's free calculator above for an exact number based on your address and electric bill.

Solar panel costs typically range from $13,000–$25,000 for a residential system, depending on system size, location, and equipment. Enter your details above for a personalized cost estimate.

For most homeowners, yes — especially if your payback period is under 10-12 years and you plan to stay in your home long enough to see the savings. It depends on your electricity rate, local incentives, and how much sun your roof gets.

Not necessarily. Panel count depends on your electricity usage, not your home's square footage. A well-insulated larger home can need fewer panels than a smaller, less efficient one.

Most systems pay for themselves in 8-15 years, depending on your upfront cost, local electricity rates, and available incentives. Try our Payback Period Calculator for a personalized timeline.

Possibly. Many utilities cap system size at 100-120% of your annual electricity usage. It's worth checking your local utility's net metering policy before finalizing your system size.

Most homeowners save 50-90% on their electricity bill, depending on system size and local rates. Annual savings typically range from $1,200-$1,700 based on national averages.

A typical residential solar system reduces about 10,000 kg of CO2 per year — roughly equivalent to planting 150-200 trees annually. Try our CO2 Savings Calculator to see your specific impact.

Yes. Solar panels still generate electricity on cloudy days, just at reduced output, and cold temperatures don't hurt performance — panels are actually slightly more efficient in cooler weather than in extreme heat.

Most solar panels are warrantied for 25 years and can continue producing power beyond that, typically losing about 0.5-1% efficiency per year.

Solar cost is your upfront investment; solar ROI measures the financial return you get back over time through savings and incentives. Use our ROI Calculator to see your specific return.

Generally yes for a home solar installation, since panels are installed on your property. Renters can sometimes access solar savings through community solar programs instead.

Incentives vary by location and typically include federal tax credits, state rebates, and net metering programs. Visit our Solar Incentives guide for the incentives available in your area.