California Solar Payback 2026: NEM 3.0, Batteries & Real Numbers

How NEM 3.0 changed California solar

Under NEM 3.0 (April 2023), California's big utilities pay roughly 5¢/kWh for exports instead of the old ~29¢ retail credit. That cut daytime export value by about 75%. For a 6 kW system, payback stretched from ~6 years to ~9–11 years for solar-only.

Why batteries became the California play

With exports worth 5¢ and imports costing ~33¢, storing your solar power and using it at night is worth about 6× more than exporting it. California battery attachment rates jumped from ~11% to near 70% of new systems. SGIP rebates (higher for low-income) further shorten battery payback.

Real 2026 payback numbers

A cash-purchased solar-plus-battery system in California typically pays back in 7–9 years. Solar-only runs 9–11 years. High-rate areas (PG&E territory, 40¢+/kWh) pay back faster. Run the PVFig battery calculator with your utility's rate to see your exact arbitrage value.

Is solar still worth it in California in 2026?

Yes for most long-term owners, but the strategy changed: add a battery and maximize daytime self-consumption. Cash solar-plus-battery typically pays back in 7–9 years.

What does NEM 3.0 pay for exports?

About 5¢/kWh on average (avoided-cost style, varies by time of day and utility), down from ~29¢ under NEM 2.0.

Is a battery worth it under NEM 3.0?

Usually yes for arbitrage — storing and self-consuming is worth ~6× more than exporting at 5¢. Use the PVFig battery payback calculator for your rate.