California has some of the highest electricity rates and most complex rebate programs in the country. Our free calculators give you personalized estimates, no email required.
Browse calculators →Every calculator uses California-specific utility rates, rebate programs, and climate data. No generic national averages.
Find out how much you can save switching from a gas furnace or old AC to a heat pump. Factors in SMUD, PG&E, SCE, and SDG&E rates and current 2026 rebate programs.
Estimate your solar savings, system size, payback period, and 25-year projection. Includes NEM 3.0 impact for PG&E, SCE, and SDG&E customers and battery storage guidance.
Calculate your true cost to charge an EV at home across California's complex utility rate plans. Find the best rate schedule for your driving habits.
Estimate the cost of replacing your AC or furnace in California and whether repair or replace makes more financial sense for your system age and condition.
Find out how much you can save switching to a heat pump water heater in California. Includes SMUD, PG&E, SCE, and SDG&E rebates up to $800.
Model the ROI of adding a Tesla Powerwall or Enphase battery to your California home. Includes NEM 3.0 self-consumption analysis and SGIP rebate eligibility.
Calculate your savings switching from a gas range to induction in California. Factors in utility rates, available rebates, and indoor air quality benefits.
Estimate how much you can save insulating your attic, sealing air leaks, and upgrading windows in California. Includes utility rebates from SMUD, PG&E, SCE, and SDG&E.
Should you do solar and battery together? Model the combined savings under NEM 3.0, stack SGIP, and see your true out-of-pocket cost.
National calculators use national averages, but California homeowners face a completely different set of economics. Our electricity rates are among the highest in the country, our rebate programs are among the most generous, and our climate makes certain upgrades far more effective here than elsewhere. Generic tools get it wrong. These don't.
We'll notify you when rebate programs change, new calculators launch, and when the best time to act on an upgrade is.