HOUSTON, April 22 — 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 a portfolio of five power plants totaling 323 MW, along with associated pipeline infrastructure, from affiliates of Alliance Energy Group (“Alliance”).
The Alliance portfolio is comprised of five plants—Batavia, Hillburn, Massena, Shoemaker and Sterling—totaling 323 MW, supplying power across multiple NYISO zones throughout New York State. The portfolio’s broad geographic footprint creates additional opportunities for co-locating new power generation and battery energy storage facilities on brownfield energy campuses, with each campus offering existing grid connections that can be enhanced or expanded to meet local and regional demand growth.
The transaction marks PowerTransitions’ entry into the New York market and will increase its total power generation assets under operation to approximately 550 MW across 7 power stations. The Company will be positioned across multiple NYISO zones, enabling it to directly assist, through its integrated development strategy, with the state’s most pressing energy challenges—increasing electricity demand, grid reliability, and the broader electrification of New York’s economy. This transaction represents the latest add-on that PowerTransitions has made to its platform since Partners Group acquired the company last year.
“We are thrilled to establish PowerTransitions’ presence in New York, one of the most compelling power markets in the country,” said Sean Long, Co-Founder & Chief Executive Officer of PowerTransitions. “The Alliance portfolio’s geographic reach gives us a diverse, strategically positioned portfolio to help assist with New York’s growing reliability needs. At each of the sites, we see a real opportunity to preserve existing and create new jobs, support local tax bases, and invest in new power generation and energy storage systems that will meet the growing energy demands and extend the productive life of these sites for decades to come.”
“This acquisition represents an important expansion into the New York market for PowerTransitions,” said Ed Diffendal, Co-Head of Infrastructure Americas for Partners Group. “It reflects our shared conviction that legacy power assets, when thoughtfully redeveloped, can play a critical role in addressing grid reliability and the accelerating demand for power across the state. The NYISO market presents significant opportunities given its aging infrastructure and rising demand, and we look forward to supporting the next phase of development at and around these sites.”
PowerTransitions is being represented by Norton Rose Fulbright and Alliance is being represented by Reed Smith, with CIBC acting as financial advisor to Alliance.
The acquisition was signed on January 30, 2026 and is expected to close later this year, subject to customary closing conditions and regulatory approvals.
