Hurricanes, heat domes, and holding up the grid with home batteries [update]
![Hurricanes, heat domes, and holding up the grid with home batteries [update]](https://electrek.co/wp-content/uploads/sites/3/2025/06/power_lines.jpg?quality=82&strip=all&w=1600)
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- Home and EV batteries networked as virtual power plants have hit 37.5 GW in the US in 2025, with thousands of homeowners collectively shaving thousands of megawatts off peak demand during extreme weather events.
- Tesla Powerwall is being produced at roughly 700,000 units per year, helping push the residential solar-plus-storage attachment rate from 6% in Q1 2020 to 25% in Q1 2024, with Wood Mackenzie forecasting 10 GW of residential storage by 2028 (about 80% of all DERs).
- Tesla paid out $9.9 million to Powerwall customers in 2024 through its California VPP with PG&E and Southern California Edison, which exceeded 100 MW in capacity and pays owners $2/kWh during emergency load-reduction events ($10–$60 per event).
- Tesla and Sunrun have teamed up on a 16 GW virtual power plant aimed at data centers, and Tesla launched a Cybertruck V2G program in Texas that earns owners money from their truck's battery pack.
- California is rolling out a $6,000 rebate for new home batteries while a Vermont utility streamlined adding home backup batteries, signaling state-level policy momentum.
- Jigar Shah, former Director of the US Department of Energy's Loan Programs Office, said the cost of upgrading the distribution grid is "getting way too expensive," framing customer opt-in "load flexibility" as the cheaper replacement for traditional infrastructure spending.
- VPPs also help decarbonize the grid by storing surplus solar and wind that would otherwise be curtailed and reducing reliance on fossil-fuel "peaker plants" during high-demand periods.
Why it matters: Homeowners with batteries and EVs now have a direct revenue stream from grid stress events — Tesla paid $9.9 million to Powerwall owners in 2024 — while utilities gain a cheaper alternative to multi-billion-dollar distribution-grid upgrades that would otherwise land on ratepayers, making VPPs both a pocket-money play and a structural fix for peak demand.
