Calculators
WattBuild gives you personalized home energy advice with advanced calculators that provide information tailed to your situation.
Solar calculators
Solar roof calculator
Solar roof calculator
See how well your roof is suited for solar power.
Rooftop 
Home 
Business 
Solar savings calculator
Solar savings calculator
Find out how and when an investment in solar will pay off.
Home Business 
Find matching solar panels
Find matching solar panels
Match solar panels to a solar generator, inverter, or charge controller.
DIY 
Zip code solar potential
Zip code solar potential
Determine what kind of monthly power a typical solar array can expect in your area.
Off-grid 
