US residential solar and storage company Sunrun has reached 5GWh of networked energy storage capacity at the end of the third quarter of 2026.
During Q3 2026, Sunrun reported a 9% year-over-year increase in direct business installations, as its storage attachment rate reached a record 75%, up from 70% in the same period last year.
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The US residential solar and storage company had installed more than 284,000 solar and storage systems by September 30, representing 5GWh of networked storage capacity.
Moreover, the company’s installed solar capacity totalled 204MW in Q3 2026, down 15% from the prior-year period, while its installed storage capacity declined 9% year over year to 374MWh.
Despite year-on-year installation decreases for both residential solar and energy storage, Sunrun registered a YoY revenue increase of 52% with nearly US$1.1 billion in Q3 2026. Sunrun also revised its full-year cash generation guidance to approximately US$200 million, excluding investments related to equipment safe-harbour activities. This compares with its previous guidance range of US$200 million to US$375 million.
“Sunrun has returned its direct business to growth, with installations increasing 9% year-over-year,” said Mary Powell, Sunrun’s CEO.
“We hit a 75% attachment rate of storage assets, the highest in our history. The need for affordable, reliable power has never been more evident, and our storage-first offering is meeting it. We are positioning the business for strong growth, bringing on some of the best talent in the industry and scaling deliberately, with a focus on customer experience and asset quality.”
During September, Sunrun contributed more than 320MW, or 56%, to a 580MW residential distributed power plant dispatch event, which the company described as the largest in history.
The company subsequently contributed more than 400MW, or 61%, to a 669MW dispatch event on October 5, followed by more than 430MW, or 58%, to a 745MW event on October 6.
Sunrun CFO Danny Abajian said the company expected higher cash generation in Q4, supporting its revised full-year outlook of approximately US$200 million, excluding equipment safe-harbour investments.
The Q3 recovery in direct installations follows a partial sequential rebound in Q2 2026, when Sunrun increased solar capacity additions to 174.3MW from 154.2MW in Q1. However, Q2 installations remained 23% below the 227.2MW recorded a year earlier. Storage capacity additions rose to 332MWh from 282.3MWh in Q1, while the storage attachment rate reached 74%.
