Pairing a battery with your ADU solar system in Ventura County dramatically improves ROI under NEM 3.0. SCE customers save more by storing midday solar and discharging during expensive peak hours.
Under NEM 3.0, exporting to the grid pays only $0.05–$0.10/kWh while SCE retail rates exceed $0.40/kWh during peak. A battery captures that arbitrage instead of giving it back to the utility.
Adding a single 13.5 kWh battery to your ADU project in Ventura County typically adds $9,000–$13,000 cash. After the 30% federal ITC, effective cost drops to $6,300–$9,100. SGIP rebates may further reduce cost.
No — California Title 24 does not mandate batteries on ADUs in Ventura County. They're optional but increasingly common under NEM 3.0.
Tesla Powerwall 3 leads thanks to its integrated inverter and 13.5 kWh capacity. Enphase IQ Battery 5P is preferred for modular sizing on smaller ADU systems.