Electrical calculators, no guesswork.
Planning an EV, a heat pump or an upgrade? These use real NEC math and honest local ranges — so you can plan before you call.
Certified installer & trusted partners
Will my panel handle it?
Run a real NEC 220.82 load calculation on your home and see if your service can carry an EV charger, heat pump or more — or if you need an upgrade.
Open the calculator →EV charger install cost
Estimate what a Level 2 home EV charger install would cost at your home, based on the run, your panel and the charger.
Open the calculator →Generator / battery sizing
Pick what you want to keep running in an outage and see what size standby generator — or how many Tesla Powerwalls — it takes.
Open the calculator →EV charging savings
See how much you'd save charging your EV at home vs. paying for gas — with your real miles and California rates.
Open the calculator →More on the way. Want the exact number for your home now? A licensed C-10 runs the real calc on a free assessment.