ECP Re-Acquires EnergySolutions in Major Bet on Nuclear Renaissance

SUMMIT, NJ & SALT LAKE CITY, UT – April 06, 2026 – In a move that underscores the renewed vigor and strategic importance of the nuclear energy sector, investment giant Energy Capital Partners (ECP) has announced a definitive agreement to re-acquire EnergySolutions, a leading provider of nuclear lifecycle services. The deal sees ECP purchasing the company from TriArtisan Capital Advisors, who had acquired it from ECP just a few years prior in 2021.

The transaction, terms of which were not disclosed, is more than a standard corporate acquisition; it represents a strategic reunion and a powerful bet on the long-term viability and necessity of nuclear power. ECP, a firm deeply invested in energy transition infrastructure, is buying back into a company it knows intimately, signaling a profound conviction that the landscape for nuclear energy has fundamentally and favorably shifted.

"We've stayed connected with EnergySolutions and its leadership since we exited our previous investment, and we've been impressed by what the team has continued to accomplish," said Drew Brown, a Partner at ECP. The firm’s decision to return as owner comes as nuclear energy sheds its controversial past and emerges as a critical solution for governments and industries grappling with the dual challenges of energy security and decarbonization.

A Strategic Reunion in a Resurgent Nuclear Era

ECP's history with EnergySolutions provides crucial context for the deal. The investment firm first acquired the nuclear services company in 2013 in a take-private deal valued at approximately $1.1 billion. After an eight-year ownership period focused on operational stability and market leadership, ECP sold the company to TriArtisan in 2021, marking what appeared to be a standard, successful private equity investment cycle.

However, the market has undergone a seismic shift since that sale. A confluence of factors—surging demand for reliable baseload power from data centers and heavy industry, bipartisan policy support in the form of legislation like the Inflation Reduction Act, and heightened geopolitical tensions highlighting the need for domestic energy security—has thrust nuclear power back into the spotlight. Utilities are now seeking to extend the operating licenses of existing reactors, previously shuttered plants are being considered for revival, and a new market for advanced and small modular reactors (SMRs) is beginning to take shape.

This resurgence creates sustained, long-term demand for the specialized services EnergySolutions provides. “We see tremendous potential for its platform as the role of nuclear energy in meeting the rising need for reliable, baseload power continues to grow,” Brown added. “We're excited to partner with them again as they continue serving their customers and contributing to a more secure energy future.”

Beyond the Reactor: The Critical Role of Nuclear Services

While public attention often focuses on the reactors themselves, the nuclear industry relies on a complex ecosystem of support services to function safely and sustainably. This is the domain where EnergySolutions has carved out its essential role. Headquartered in Salt Lake City and Charlotte, the international company specializes in the full lifecycle of nuclear materials, including transportation, processing, recycling, and final disposal.

Its clients range from government agencies like the U.S. Department of Energy to commercial nuclear power generators, research laboratories, and medical institutions across the globe. This business model positions EnergySolutions as a critical enabler of the entire nuclear value chain. As existing plants operate longer and new ones are planned, the need for expert management of radiological materials and waste becomes ever more acute.

"Over the past several years, we have broadened our offerings across the nuclear sector and strengthened our ability to deliver integrated solutions for customers," said Ken Robuck, President and CEO of EnergySolutions. He noted that the renewed partnership with ECP is expected to accelerate the company’s long-term strategy. “We believe this transaction will accelerate our long-term strategy and growth. We are proud of the work our team delivers every day, and we’re excited to work with ECP again as we build on our momentum and continue investing in our people and capabilities.”

The Path to 2026: A Complex Regulatory Road

The transaction is not immediate, with an expected closing date in 2026. This extended timeline points to the significant regulatory hurdles inherent in a deal of this nature. The acquisition is subject to "customary regulatory approvals," a phrase that encompasses a multi-faceted review process by government bodies in the United States and abroad.

In the U.S., the deal will likely face scrutiny from antitrust regulators such as the Federal Trade Commission (FTC) or the Department of Justice (DOJ) to ensure it does not unfairly limit competition in the nuclear services market. More specific to the industry, the U.S. Nuclear Regulatory Commission (NRC) will be involved, as changes in ownership of companies holding licenses for handling nuclear materials require stringent review to ensure safety, security, and operational continuity are maintained.

Given EnergySolutions' international footprint, including significant operations in Canada and Asia, regulatory bodies in those jurisdictions, such as the Canadian Nuclear Safety Commission (CNSC), will also need to review and approve aspects of the transaction that fall under their purview. This complex, multi-agency process is standard for critical infrastructure sectors and underscores the highly regulated environment in which EnergySolutions operates.

A Successful Chapter Closes as a New One Begins

The sale marks a successful exit for TriArtisan Capital Advisors, which stewarded EnergySolutions through a period of significant growth and operational achievement. Under its ownership, the company strengthened its market position, expanded its capabilities, and successfully executed major projects, including high-profile decommissioning work that reinforced its reputation for operational excellence.

“We are grateful for the EnergySolutions team and what they accomplished during TriArtisan’s ownership,” said Gerald Cromack, Co-Founding Partner of TriArtisan. “The company has strengthened its platform and expanded its capabilities across the nuclear services market while maintaining an unwavering focus on safety and execution. We believe ECP is an excellent next owner for EnergySolutions.”

This transition completes a full circle, returning the company to a familiar owner armed with a new, bolder thesis on the future of nuclear energy. The acquisition by ECP is ultimately a powerful endorsement of the entire nuclear sector's trajectory. It affirms that the complex, highly technical work of managing the nuclear lifecycle is not just a support function but a cornerstone of a secure and decarbonized energy future, attracting significant investment from those shaping the next generation of global infrastructure.