Electrical & Energy Calculators
Electrical Load Calculator
Estimate your home's electrical load and whether you have capacity for an EV charger or battery before scheduling work.
Learn more →EV Charger Cost Calculator
Estimate the installed cost of a Level 2 EV charger based on your panel, distance, and charger type.
Learn more →EV Charging Time Calculator
Calculate how long it takes to charge your EV at home based on battery size and charger amperage.
Learn more →EV Charging Savings Calculator
See how much you save charging at home versus public charging or gasoline.
Learn more →Powerwall Savings Calculator
Estimate annual savings from a Tesla Powerwall on time-of-use rates and avoided outages.
Learn more →Generator Sizing Calculator
Find the right standby generator size for the circuits you want to back up.
Learn more →Battery Sizing Calculator
Find out how many Powerwalls (or kWh of home battery) your backup goals actually need, essentials, most of the home, or everything.
Learn more →Wire Size Calculator
Get the right AWG wire size for any circuit from amperage, distance, and voltage, with the 3% voltage-drop check built in.
Learn more →Breaker Size Calculator
Size a circuit breaker from your appliance's wattage, including the NEC 125% continuous-load rule for EV chargers and heaters.
Learn more →Solar Savings Calculator
Estimate your solar system size, annual savings, and payback from your electric bill and region, including the state and utility programs that apply.
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