Sunrun announced that participation in its Puerto Rico distributed power plant has doubled to more than 60,000 customers, representing nearly 70,000 home batteries. The distributed power plant frequently and reliably delivers 45 MW of dispatchable power for four hours at a time, providing critical support to Puerto Rico’s electric grid.

Since April, Sunrun has dispatched its power plant more than 60 times to weather severe energy shortfalls and prevent rolling blackouts. During an extended period of unseasonably hot temperatures this fall, Sunrun dispatched its home batteries to the grid for 18 consecutive days beginning October 13.

Sunrun’s Puerto Rico distributed power plant has scaled rapidly since 2024, when approximately 4,000 customers were enrolled. Enrollment surged to more than 30,000 customers in 2025. Sunrun is the largest aggregator in Puerto Rico’s Customer Battery Energy Sharing program.

Puerto Rico’s electric utility operator, LUMA, said in June and again in July that energy from home batteries helped “maintain system stability and prevent outages that would have affected thousands of customers.”

“What began in Puerto Rico out of necessity for family resilience has become a vital blueprint for the U.S. mainland, where severe weather and the proliferation of AI data centers are demanding new energy solutions,” said Sunrun CEO Mary Powell. “Sunrun is uniquely positioned to provide these solutions, whether to support a grid at its breaking point or to provide capacity for hyperscalers looking to come online.”

S. Energy Information Administration. When severe weather is factored in, residents experienced an additional 23 hours of power interruptions.

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