Energy Capital Partners Acquires EnergySolutions from TriArtisan Capital Advisors

Energy Capital Partners (ECP), a prominent investor in energy transition infrastructure, has reached a definitive agreement to acquire EnergySolutions, a global nuclear services company, from TriArtisan Capital Advisors LLC. The deal, which is anticipated to close in 2026 pending regulatory approvals, marks a strategic move by ECP to deepen its footprint in the nuclear energy sector amid evolving market dynamics.

EnergySolutions specializes in integrated solutions spanning the full nuclear fuel lifecycle, including the safe transportation, processing, recycling, and disposal of radiological materials. Headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, the company operates across the United States, Canada, Asia, and Europe. Its diverse client base includes government agencies, commercial nuclear power operators, research institutions, national laboratories, and medical organizations worldwide.

Ken Robuck, President and CEO of EnergySolutions, highlighted the significance of the transaction: “Over the past several years, we have expanded our offerings and enhanced our ability to deliver comprehensive nuclear solutions. Partnering again with ECP will accelerate our long-term growth strategy and investment in capabilities.” ECP previously held ownership in Energy and has maintained a close relationship with its management team.

Drew Brown, Partner at ECP, emphasized the strategic rationale: “Nuclear energy is increasingly vital to U.S. energy security, supported by bipartisan policy and regulatory reforms. With rising demand for reliable baseload power from sectors like manufacturing and data centers, the nuclear industry is experiencing extended plant lifespans and new build projects. EnergySolutions’s expertise positions it well to meet this sustained demand.”

Under TriArtisan’s stewardship, EnergySolutions achieved significant growth and operational excellence, expanding its nuclear services platform while maintaining a strong safety record. Gerald Cromack, Co-Founding Partner at TriArtisan, expressed confidence in the transition: “EnergySolutions has strengthened its capabilities and market position. We believe ECP is the right partner to guide the company’s next phase of development.”

The transaction’s financial terms were not disclosed. Morgan Stanley & Co. LLC and RBC Capital Markets, LLC served as financial advisors to EnergySolutions, with Ropes & Gray and Latham & Watkins LLP providing legal counsel to Energy and ECP respectively.

Founded in 2005 and based in Summit, New Jersey, ECP focuses on investments in electricity generation and sustainable infrastructure supporting the energy transition. The firm manages substantial capital commitments and is affiliated with Bridgepoint Group Plc, a global leader in middle-market private equity and infrastructure.

This acquisition reinforces ECP’s position in the nuclear energy infrastructure sector by re-integrating a full-lifecycle nuclear services provider with a broad international presence. The deal is expected to generate synergies through cross-selling, operational efficiencies, and enhanced innovation capabilities.

Looking ahead, ECP and EnergySolutions plan to navigate integration challenges including regulatory compliance across jurisdictions, operational alignment, and talent retention. The transaction reflects broader industry trends of consolidation and increased investment in nuclear energy as a key component of energy security and decarbonization efforts.

Completion of the acquisition remains subject to customary regulatory approvals, with closing anticipated in 2026. Stakeholders will be watching closely as the nuclear sector continues to evolve amid shifting policy and market conditions.