Solar Calculators for Los Angeles, California

Q: What should I verify before signing a solar contract in Los Angeles?

Confirm that the quote names your actual utility, uses a recent electricity rate, includes measured shade and roof-condition findings, and explains who handles permits and interconnection. Ask the installer to separate guaranteed equipment and workmanship terms from estimated production, incentives, and savings.

Free tools with illustrative Los Angeles planning inputs. Replace energy rates and installation costs with your bill and written quote.

Quick answer

Start with your exact utility account and roof design. The 5.6 sun hours and 28.0 cents/kWh below are planning assumptions, not verified current rates for Los Angeles. Confirm SCE / LADWP eligibility and export settlement.

Notes updated 2026-07-26

Best for: Los Angeles homeowners comparing a proposal or estimating savings before calling installers.
Inputs needed: 12-month kWh usage, roof shade, SCE / LADWP, quoted $/W
Formula used: Local production = system kW × local peak sun hours × 365, then adjusted for losses.
Method references: NREL PVWatts, SCE / LADWP, California incentive rules

Peak sun hours

5.6

hrs/day planning assumption

Illustrative energy rate

28.0¢

per kWh (SCE / LADWP)

Typical install cost

$3.1/W

planning assumption, not a market median

Net metering policy: Net billing (exports < retail)

What Los Angeles homeowners should check

Los Angeles production varies between clear inland neighborhoods and cooler coastal areas affected by morning marine cloud cover. Older housing stock may also need a roof-condition or electrical-panel review before the solar permit can move forward.

LADWP and Southern California Edison use different solar tariffs and interconnection processes. The serving utility, rather than the city name alone, determines export compensation and the value of shifting solar energy into evening hours.

At the state level, California currently uses net billing (nem 3.0). A typical interconnection takes 4–10 weeks (sgip approval can add time), but utility review and local permitting can extend that range. Check current rules before relying on a proposal's export-credit or installation-date assumptions.

What should I verify before signing a solar contract in Los Angeles?

Confirm that the quote names your actual utility, uses a recent electricity rate, includes measured shade and roof-condition findings, and explains who handles permits and interconnection. Ask the installer to separate guaranteed equipment and workmanship terms from estimated production, incentives, and savings.

Illustrative 8 kW system in Los Angeles

Annual production

14,050 kWh

Retail-value ceiling

$3,934

System cost (est.)

$24,800

Energy-only cost/value ratio

~6 yrs

Illustrative 5.6 peak sun hours, 14.08% production losses, 28.0 cents/kWh and $3.1/W. The retail-value ceiling assumes every kWh earns retail value; lower export credits reduce it. The cost/value ratio is not a full payback model and excludes repairs, financing and rate changes. No new Section 25D homeowner credit in 2026.