In late August, Puerto Rico-based independent power producer Infinigen announced the closing of a $33 million tax equity investment in the Yabucoa Solar Project from Foss & Co. The transaction also includes an additional $26 million commitment toward a future Yabucoa battery storage project to be developed at the same site. The financing advances construction of Yabucoa Solar Park, a 42.6-MW facility that will become Infinigen's third utility-scale project in Puerto Rico.
The new project joins the operating Horizon Solar Park and Oriana Solar Park. Together, the three projects represent 115 MW of capacity. The future energy storage facility would mark Infinigen's entry into standalone battery storage. Infinigen is wholly owned by a fund managed by ArcLight Capital Partners, a group that has been investing in electrical infrastructure since its founding in 2001.
The combined $59 million in commitments supports both immediate solar construction and a planned storage expansion at one site. Because the battery project is described as a future facility at the same location, the financing structure appears designed to advance near-term generation while preserving an option for dispatchable capacity later. The 42.6-MW solar park would add roughly 37% to Infinigen's existing Puerto Rico portfolio, based on the stated 115 MW total across all three projects.
What remains unknown is the timeline for the battery storage project, its planned capacity, and whether the $26 million commitment is contingent on separate approvals or milestones. The source does not specify construction schedules, commercial operation dates, or the terms of the tax equity arrangement. It also does not indicate whether the storage facility would operate independently or be paired directly with Yabucoa Solar Park's output.