PowerTransitions to Acquire 1,242 MW Roseton Generating Facility, Expanding New York Platform
Houston, Texas – July 1, 2026 – PowerTransitions®, a leading independent power producer specializing in the redevelopment of legacy power and industrial facilities, announced today that it has entered into an agreement to acquire the 1,242 MW Roseton Generating Facility in Newburgh, New York from a subsidiary of Castleton Commodities International LLC ("CCI").
The Roseton Generating Facility is a dual-fuel natural gas fired power plant that has supplied power into NYISO Zone G since 1974. Its scale and existing grid infrastructure make it an ideal candidate for co-location development into a robust energy campus, including new energy storage systems, allowing PowerTransitions to layer in new capacity to enhance reliability for the surrounding grid.
The agreement to acquire Roseton follows PowerTransitions' previously announced agreement to acquire a portfolio of five power plants from affiliates of Alliance Energy Group and will, once closed, increase the Company's total power generation assets under operation to approximately 1.8 GW across 8 power stations in PJM, NYISO and ISO-NE. This transaction represents the latest add-on that PowerTransitions has made to its platform since Partners Group acquired the company last year.
"The agreement to acquire Roseton is a transformative step for PowerTransitions and a natural complement to the Alliance portfolio we announced last month," said Sean Long, Co-Founder & Chief Executive Officer of PowerTransitions. "Roseton is one of the largest and well-maintained operating power plants in the Hudson Valley, and its existing grid connections and site infrastructure present an exceptional opportunity to develop a multi-use energy campus at scale to support reliability in the sub-region. We look forward to working with the plant's experienced workforce and the surrounding communities to ensure continued reliability as electricity demand grows in the region while investing in the long-term future of new energy assets on site."
"Roseton represents an important step in PowerTransitions' strategy to build a scaled platform of strategically located power assets in New York," said Ed Diffendal, Head of Infrastructure Americas for Partners Group. "The site's scale, infrastructure, and position within NYISO create significant opportunities for future redevelopment. We look forward to continuing our partnership with the PowerTransitions team as they expand and optimize the platform to help meet evolving power needs across the region."
The acquisition is expected to close later this year, subject to customary closing conditions and regulatory approvals.
About PowerTransitions®
PowerTransitions® is a leading independent power producer specializing in owning operating legacy power generation facilities and redeveloping retired power and industrial facilities into new power generation, energy storage systems and on-site powered land campuses. PowerTransitions leads all aspects of its redevelopment projects, from deconstruction and remediation of the sites to development, financing and owning new power generation, energy storage facilities, and powered land for advanced manufacturer and data center campuses. For more information on PowerTransitions, please visit www.power-transitions.com or follow us on LinkedIn.
About Partners Group
Partners Group is one of the largest firms in the global private markets industry, with around 2,000 professionals and over USD 185 billion in assets under management globally. The firm has investment programs and custom mandates spanning private equity, private credit, infrastructure, real estate, royalties, and special opportunities. With its heritage in Switzerland and primary presence in the Americas in Colorado, Partners Group is built differently from the rest of the industry. The firm leverages its differentiated culture and its operationally oriented approach to identify attractive investment themes and to transform businesses and assets into market leaders. For more information on Partners Group, please visit www.partnersgroup.com or follow them on LinkedIn.
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