Cali Energy Calculators
Built from real utility rates — not generic national averages.
32 free California energy & solar calculators — 8 independently verified against utility tariffs, and the rest showing every figure with its source or flagged as a Cali Energy planning assumption. No sign-up. The newer tools are being brought through the same verification.
California-specific
SCE, LADWP, NEM 3.0, California incentives and climate assumptions — not generic national averages.
Source-linked
On our verified calculators, see the exact rates and constants used, each linked to its official source.
Reproducible
Repeat the published examples and get the same result. The math is shown, not hidden.
No lead gate
Get the full result without entering a phone number or email. No sign-up, no sales call.
Our bill & rate calculators are independently verified against their official sources; the newer solar-sizing tools show every assumption and source up front while we complete the same checks — see how we verify them.
Featured tools
LADWP vs SCE bill estimator
Compare your LADWP and SCE electric bill for 2026, side by side.
Bills, rates & usageSCE time-of-use comparison
See which SCE plan — 4-9PM, 5-8PM or PRIME — is cheapest for your usage.
Bills, rates & usageEV charging cost: LADWP vs SCE
See what home EV charging costs on LADWP vs SCE, with and without solar.
Bills, rates & usageAC operating cost
Estimate what your air conditioner costs to run in California.
Solar sizing & productionHow many panels do I need
Find how many solar panels your California home needs.
Cost, payback & valueSolar payback
Estimate how many years until solar pays for itself on LADWP or SCE.
Batteries & backupBattery size
Size a home battery for backup hours or bill savings.
Incentives2026 incentive finder
Find the 2026 California solar and battery incentives you qualify for.
Available calculators
Free calculators for electricity bills, rates, usage and solar sizing — every figure shown with its source or flagged as a planning assumption. More battery and incentive tools on the way.
Bills, rates & usage
Solar sizing & production
Cost, payback & value
Batteries & backup
Incentives
Electrical, roof & eligibility
How Cali Energy builds and verifies these tools
Every source-derived rate and constant is linked to its official source (SCE, LADWP, the EIA, the CPUC, the IRS, the DOE/NREL) and fixed with a checked date. Any Cali Energy planning assumption is clearly identified, with its formula and effect on the result shown. Worked examples are checked against the live tool, and models are updated when a tariff changes.
Read the full methodologyWant a number based on your actual project?
These tools give solid estimates. For a figure built on your real bill, roof and interval usage, Cali Energy can model the complete project — with the same transparency.
Talk to Cali Energy