Sunrun Dispatches 1,200 Grid-Relief Hours via 1,000+ Home Solar Batteries
Sunrun completed a first-of-its-kind distributed power plant with PG&E, dispatching energy from over 1,000 home solar-plus-storage systems across 24 constrained lines and substations for more than 1,200 hours from July to October 2025. Participants received $150 per battery while the program deferred distribution upgrades and generated net savings.
1. Program Launch and Scope
In early 2026, Sunrun partnered with PG&E on its Local PeakShift Power distributed power plant, enrolling more than 1,000 customers with solar-plus-storage systems near 24 constrained power lines and substations in Northern California. The initiative aimed to provide targeted neighborhood load relief and help PG&E avoid costly infrastructure upgrades.
2. Dispatch Performance and Metrics
Following an April–June 2025 test phase, the program executed over 50 dispatch events from July through October 2025, totaling more than 1,200 hours of energy exports. Batteries responded with 99% accuracy to location-specific instructions, consistently keeping loads below operational limits at all targeted sites.
3. Financial Outcomes and Strategic Significance
Participants earned $150 per battery for exporting stored solar energy, offsetting local grid constraints and producing net savings for all utility customers. Sunrun’s success in this pilot supports its strategy to expand non-wires alternatives and leverage its 217,000-home battery fleet to meet California’s load-shifting and reliability goals.