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Solar Panel System Size Calculator

What's Your Optimal PV Solar Power System Size?

Enter: Your Current kWh Usage • Your State • Solar Offset Desired (percent of electricity replaced)
Our Solar Calculator Will Estimate Your: System Wattage Size, Number of Solar Panels, and Roof Space Required.

Calculate Your PV Solar Power System Size Here

Monthly kWh



Solar Offset

0 %


  Calculated Size Is  

Minimum Size PV System in watts: 0
Recommended Size PV System in watts: 0
Solar Panels Needed (300 watts each): 0
Square Feet of Roof Space Needed: 0

SOLAR OFFSET: The percentage of your home’s electricity you want to replace with solar power.

MONTHLY KILOWATT HOURS: The average amount of electricity your home uses.

We have designed this solar calculator to provide you with an estimate of how many panels you will need to replace your current dependence on the electric utility. 

Use it to estimate the size of a solar energy system you would need to power your home. To find your monthly kilowatt-hour usage, look at your power bill or contact your utility. To ensure you have sufficient power generation, enter the amount of electricity you use in your “peak usage” month. 

This information will help estimate the size of a solar project your home might need. Of course,  many other factors are required to get an accurate estimate (roof size, orientation, materials, shade, battery needs, available roof space, etc.), but this will get you started.

Now is a great time to buy a larger system due to the lower cost of solar power, federal and state tax incentives for solar energy, and the faster payback period on additional solar panels. 

We always recommend more than a 5kW system if your budget permits and you have the space. Solar panels are more affordable than they've ever been before, so now's the time to buy big. 

*Solar offset is the percentage of your home’s electricity you want to replace with solar power.
*Monthly kilowatt-hours is the average amount of electricity your home uses.

If you would like an accurate price quote in your area, click here for our solar savings quiz.
Take Control Of Your Energy Future.
Going Solar Energy Just Makes Sense.

Power Your Way

Answer a few questions to get a free no obligation quote. It's now easier now than ever to install and go solar. We would love to let you know how much you can save.
Go solar today for a better tomorrow.

Save Money

Solar Power has never been more affordable. With electricity rates on the rise now’s the time to make the switch.

Avoid Blackouts

Don't endure another blackout. With battery packs, solar can power your home or your business 24/7

Go Green

Solar energy is clean, renewable, and 100% American and will reduce your carbon footprint for a better tomorrow.

Did you know?
Texas Residents Are Saving $800 Average a Year On Energy!

Ready to go solar?
Calculate your estimated monthly savings with our free Solar Savings Calculator or answer a few questions to get a free no obligation quote.
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