Sunrun, the largest U.S. residential solar and battery storage provider, has agreed to supply Voltus with aggregated capacity from its fleet of home solar-plus-storage systems to meet power purchase commitments from AI hyperscalers operating in the PJM and MISO wholesale markets. The arrangement turns thousands of distributed residential batteries into a dispatchable virtual power plant that can deliver immediate megawatts — branded by Voltus as Bring Your Own Capacity™ — directly to data centers whose soaring electricity demand is straining regional grids.
The deal signals a maturation of the virtual power plant model from pilot-scale grid services into a commercial resource class capable of underwriting long-term offtake agreements for industrial-scale loads. Until recently, aggregated distributed energy resources (DERs) primarily provided ancillary services such as frequency regulation or demand response. Now, they are being contracted as firm capacity, a role traditionally reserved for centralized generation or large-scale storage. For Sunrun, the partnership unlocks a new revenue stream from its installed base; for Voltus, it expands a portfolio that already manages over 6 gigawatts of flexible load across North America.
AI hyperscalers are driving unprecedented load growth in PJM and MISO, where interconnection queues stretch years and new gas-fired generation faces permitting and carbon-risk headwinds. By tapping residential batteries that already sit behind the meter, the Sunrun-Voltus model sidesteps transmission bottlenecks and offers a faster, lower-carbon alternative to peaker plants. The economics hinge on sophisticated forecasting and real-time orchestration software that can aggregate heterogeneous assets — different battery chemistries, inverter brands, and customer usage patterns — into a single, reliable capacity product.
Homeowners enrolled in the program receive compensation for making their stored energy available during grid stress or high-price periods, effectively monetizing assets that would otherwise sit idle. This “bring your own capacity” framework could become a template for other DER aggregators as utilities and grid operators seek non-wires alternatives to meet resource adequacy requirements. The PJM capacity market, in particular, has struggled with reliability pricing model reforms that favor seasonal and demand-side resources, creating a structural opening for aggregated storage.
The broader implication is a shift in how the grid values distributed assets: not as passive load modifiers but as dispatchable supply that can be contracted, measured, and settled like any generator. If the Sunrun-Voltus agreements perform as promised, they will validate a business case that could accelerate residential storage adoption, deepen customer engagement in wholesale markets, and reshape resource planning for an AI-driven demand surge that shows no sign of slowing.
Read the full report at CleanTechnica.
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