Solar Panels in Los Angeles: LADWP Net Metering After NEM 3.0 and the 2026 Numbers

LADWP Net Metering in 2026: Why You Are Not Subject to NEM 3.0

NEM 3.0 does not apply to LADWP customers — the most important fact for any Los Angeles homeowner researching solar. NEM 3.0, officially called the Net Billing Tariff, only covers the three major investor-owned utilities in California: PG&E, SCE, and SDG&E. LADWP is a publicly owned municipal utility and sets its own metering policy independently of the California Public Utilities Commission.

Under LADWP’s current net metering rider — which DSIRE (the Database of State Incentives for Renewables & Efficiency) lists as an active program — customers receive bill credits at their applicable retail rate for every kilowatt-hour they send to the grid. Those credits never expire and roll forward month to month against future bills. The only carve-out is that excess credits cannot offset taxes or minimum charges, and any remaining balance at account termination goes back to LADWP rather than being paid out in cash.

By contrast, a homeowner served by SCE just outside the city limits receives around $0.08/kWh for solar exports — a 75% reduction compared to what LADWP customers receive at even Tier 1 rates. According to CPUC proceeding data, battery attachment rates among SCE and PG&E solar customers jumped from roughly 11% before April 2023 to nearly 70% by late 2024, because storage became the only way to capture meaningful value from solar generation under the Net Billing Tariff. LADWP customers can still use the grid as a virtual battery at full credit value, because their export credits are worth as much as the electricity they would otherwise buy back.

There is one legal development worth tracking. The California Supreme Court issued a unanimous ruling in August 2025 ordering a Court of Appeal to reconsider whether NEM 3.0 was approved lawfully. A ruling is expected by mid-2026. Even if that leads to improved export rates for SCE and PG&E customers in the future, it has no direct effect on LADWP’s program, which operates under separate municipal authority. LADWP has not announced any plans to adopt the Net Billing Tariff structure, making the current retail-rate credit arrangement the baseline for all new residential solar interconnection applications in the city. For homeowners considering a new installation, this stability means locking in retail-rate credits for the life of a 25-year system — a meaningful edge over the policy uncertainty facing customers of the state’s investor-owned utilities.

Solar Payback Period and 25-Year ROI for LADWP Homeowners in 2026

At current costs and LADWP rates, the residential solar payback calculation in Los Angeles is among the most favorable in the country. A 10 kW system at $23,771 installed generates roughly 14,000 to 15,000 kWh per year in Los Angeles based on NREL’s PVWatts data for the region, given approximately 5.5 peak sun hours daily. At a blended average rate of $0.26 per kWh — the figure EnergySage reports for actual LA electricity costs as of April 2026, reflecting tier usage and the 10% Electricity Users Tax — that production carries a gross annual value of $3,640 to $3,900 in avoided electricity and net metering credits. Payback on the unsubsidized system arrives in approximately 6 to 7 years.

Solar panel degradation averages about 0.5% per year according to NREL research, meaning a panel producing at 100% in year one performs at roughly 87.5% by year 25. This degradation is already baked into most reputable long-term savings projections. At 4% annual rate escalation, the 25-year savings picture is substantial: EnergySage’s marketplace data puts average projected savings at $176,753 over 25 years for LA homeowners — accounting for the upfront system cost, estimated production decline, and compounding rate increases.

Sizing discipline is essential. LADWP’s net metering rules credit excess generation month to month, but any credit balance remaining when you close your account goes to LADWP — there is no cash payout. The Solar Energy Industries Association (SEIA) recommends right-sizing your system to approximately 100% of your 12-month consumption, accounting for planned electrification such as an EV or heat pump before finalizing system size. A homeowner adding a Level 2 EV charger may add 3,000 to 5,000 kWh of annual demand — enough to justify a larger array that would otherwise appear oversized on current bills alone. Getting the size right from the start maximizes every dollar of your investment. Use our solar ROI calculator to input your actual LADWP bill, roof orientation, shading conditions, and planned electrification loads to generate a project-specific payback and 25-year net savings estimate.