Sunrun, the largest U.S. residential solar and battery storage provider, has partnered with Voltus to supply energy capacity from its distributed battery systems to artificial intelligence data centers. The arrangement allows Voltus to aggregate power from Sunrun's residential solar-plus-storage installations across the PJM and MISO grid regions to fulfill contracts with AI hyperscalers.
The deal represents a shift in how residential distributed energy resources feed into grid operations. Rather than selling power solely through traditional utility markets, Sunrun's network of home batteries now supplies capacity directly to energy-intensive industrial customers. Voltus operates a platform that bundles small, dispersed renewable energy sources into packages large enough for commercial contracts. The "Bring Your Own Capacity" model lets AI companies secure megawatts of available power from residential systems during peak demand periods.
Grid operators in PJM and MISO serve regions spanning the mid-Atlantic and upper Midwest, where electricity demand from data center expansion continues climbing. By deploying residential batteries as a distributed resource pool, the partnership avoids constructing new natural gas plants while providing Sunrun customers economic returns on their storage systems. Households can monetize their battery capacity when grid conditions permit, creating dual-purpose assets that benefit individual finances and grid stability simultaneously.
The partnership underscores energy infrastructure's evolution toward distributed generation. AI hyperscalers have accelerated electricity demand growth, threatening grid reliability in certain regions. Aggregating thousands of smaller storage systems offers utilities and grid operators flexible alternatives to conventional generation. However, the arrangement raises questions about consumer priorities. Home battery systems installed primarily for backup power and bill reduction now serve industrial cooling operations. Grid engineers will monitor whether aggregating residential capacity for megawatt-scale contracts affects homeowner access during local emergencies.
Sunrun and Voltus have not disclosed capacity volumes or financial terms. The arrangement covers multiple states