Could Your Home Battery Earn Its Keep? California’s New VPP Laws and the Payback Potential
Your battery could have a second job: helping the neighborhood keep the lights on. A home battery can store solar energy for later and provide backup power. Through a virtual power plant, it can also join thousands of other devices to help the grid—and potentially earn payments.
California just took another step in that direction. Governor Gavin Newsom signed SB 905 and SB 913 on September 30, 2026. For homeowners considering solar and storage, the interesting question is how much grid participation could improve the numbers.
What actually changed in California?
SB 913 directs regulators to improve how groups of customer energy resources qualify to provide reliable grid capacity, including the value of battery exports during grid stress. SB 905 calls for better measurement of distribution-grid utilization, helping identify opportunities to use existing infrastructure more efficiently. CALSSA’s explanation identifies June 30, 2027 as a key deadline for SB 913’s market pathways.
These laws support a larger role for customer batteries. They do not establish one new statewide homeowner payment rate. Program implementation, enrollment rules and actual compensation still matter.
Other markets show what is possible
| Market | How payments work |
|---|---|
| California: Tesla + SCE ELRP | Tesla lists $2 per additional qualifying kWh during events, with illustrative annual earnings of $100–$450 per Powerwall, depending on events and performance. |
| Massachusetts: ConnectedSolutions | Mass Save lists $275 per kW of average summer-event contribution. Its 5-kW example could earn up to $1,375 per year. |
| Texas: Tesla Electric | Eligible participants receive monthly VPP bill credits alongside energy sellback credits. The amount depends on the plan and participation; there is no single universal payout. |
Sources: Tesla/SCE, Mass Save and Tesla Electric Texas. These are different programs with different requirements. Massachusetts payments are a comparison point, not an offer available to California homeowners. Published examples are not proof of an individual home’s enrollment eligibility.
What could that do to battery payback?
Consider an illustrative $12,000 installed battery investment with $900 a year in ordinary bill savings. These are modeling assumptions, not a quote or a prediction for your home. The table tests additional annual VPP benefits after charging costs and any displaced bill savings, so the same energy is not counted twice.
| Assumed net VPP benefit/year | Total annual benefit | Simple payback |
|---|---|---|
| $0 | $900 | 13.3 years |
| $300 | $1,200 | 10.0 years |
| $600 | $1,500 | 8.0 years |
| $1,000 | $1,900 | 6.3 years |
The $600 and $1,000 rows are hypothetical future-program scenarios, not California payment forecasts. Even the $300 net-benefit assumption must be verified for the particular home and program. Simple payback equals upfront cost divided by annual benefit. It holds benefits constant and excludes financing, taxes, maintenance, degradation, replacement and the time value of money. A long calculated payback may extend beyond the battery’s warranty or useful service life; payments may also change or end.
Our outlook: a useful extra source of value
Our view is that better compensation for dependable grid support could strengthen the case for batteries. Other states show that meaningful payments are possible, but California’s outcome will depend on the rules regulators adopt and the programs customers can actually join.
For now, evaluate a system first on your energy use, bill savings and backup needs. Then model VPP participation as an additional opportunity. Keep an eye on how much backup energy you retain, export restrictions and whether dispatch reduces other savings. For a lease or PPA, review who controls enrollment and who receives the payments before adding VPP income to the homeowner’s budget.
See what the numbers look like for your home
Already have solar, or thinking about adding a battery? Send Markham Energy Consulting your electric bill and any existing system details. We can compare the options and show a base case alongside potential VPP benefits.
Email Matt at matt@markhamenergy.com
Published October 2, 2026. Program terms and availability can change. Read the official Governor’s signing announcement and the program sources above.