California solar owner considers battery storage after peak hour rates eliminate annual bill credits
By Eve
A Southern California homeowner with solar panels reports that San Diego Gas and Electric's peak rate period from 4 p.m. to 9 p.m. has eliminated bill credits they previously received, prompting consideration of battery storage. The system generates 10 to 25 kWh of excess power between 10 a.m. and 4 p.m., which the owner believes could recharge a battery daily for use during expensive evening hours. The homeowner is comparing a single Tesla Powerwall with a SolArk 15/18 system and 16 kWh of batteries, with plans to potentially add a pool and accessory dwelling unit later.
Why it matters
Time of use tariffs that penalise evening consumption are driving residential battery storage demand in California, creating procurement opportunities for installers and equipment suppliers. The case illustrates how utility rate structures can shift solar economics from net metering credits to behind the meter storage, expanding the addressable market for battery systems beyond backup power alone.
Source
- Original title
- “California solar owner says peak-hour rates erased annual bill credits”
- Published
- 17 October 2026
In this story
- Topic
- Grid & Energy
- Place
- United States
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