IMSR News & Events

"During the quarter, Terrestrial Energy delivered against the three-pillar framework outlined in March - IMSR engineering and regulatory programs, including our key project engagements with the U.S. Department of Energy, supply chain development, and our commercial pipeline of IMSR Plant projects," said Simon Irish, CEO of Terrestrial Energy. "These developments move us closer to serving large industrial markets and the opportunity to power AI, advanced manufacturing, and the broader U.S. economy."

Terrestrial Energy announced that the U.S. Nuclear Regulatory Commission has issued its Safety Evaluation Report approving the company's Postulated Initiating Events Topical Report. This follows the NRC's acceptance of the company's final Topical Report submission announced in April 2026. The NRC's SER issuance is an approval of Terrestrial Energy's PIE methodology, which identifies and evaluates events that may challenge the safe operation of IMSR nuclear plant. This analysis is foundational to nuclear safety analysis and represents another important regulatory milestone as Terrestrial Energy systematically executes on its nuclear regulatory program. "We are pleased to report the timely issuance by the NRC of the SER on our PIE Topical Report, this follows its acceptance of final submissions just last month," said Simon Irish, CEO of Terrestrial Energy. "The scope of this Topical Report is foundational to nuclear safety analysis and future IMSR Plant licensed operation."

Terrestrial Energy (IMSR) announced that Tyler Gronbach has joined the company as Vice President of Investor Relations and Public Relations. Gronbach joins Terrestrial Energy from Wolfspeed (WOLF).

Terrestrial Energy (IMSR) and Riot Platforms (RIOT) announced a collaboration to develop a best-in-class pairing of future data centers with co-located advanced nuclear plants. As partners, Riot and Terrestrial Energy will consider project opportunities at multiple candidate sites, including existing Riot facilities in Texas and Kentucky, while jointly evaluating additional sites. The two partners will collaborate on the customization of IMSR Plants to be integrated with Riot developed and operated data centers. "This partnership brings together two companies with sector leading capabilities to unlock the tremendous value in IMSR Plant supply to data center operations and to build long-term strategic depth in Riot Platforms' power-first strategy," said Simon Irish, CEO of Terrestrial Energy. "Riot has proven it can build and operate large-scale digital infrastructure, and our small and modular IMSR Plant is designed to deliver the reliable, low-cost power those operations need. Together, we see a clear path to deploying IMSR's clean energy at scale for AI and HPC."