Terrestrial Energy Inc.

What they do

Terrestrial Energy is developing the IMSR Plant, a Generation IV molten salt reactor that uses a molten salt eutectic as both fuel and coolant. The company plans to commercialize two principal businesses: IMSR Core-unit supply and IMSR Fuel Salt supply, targeting electricity generation and industrial heat applications. It is currently in the design, licensing, and pilot project phase, with a test reactor (Project TETRA) and fuel line pilot (Project TEFLA) under agreements with the U.S. Department of Energy. The company became a public entity in October 2025 through a reverse recapitalization with HCM II Acquisition Corp.

Revenue drivers

• IMSR Core-unit supply — Long-term contracts for the sale or lease of IMSR nuclear plants; currently no revenue, but management estimates 33% gross margin on these core-unit sales and 79% of lifetime revenues occur after construction.
• IMSR Fuel Salt supply — Manufacturing and supplying the proprietary IMSR Fuel Salt; management estimates 40% gross margin on this business, with fuel supplied under long-term contracts. No commercial fuel revenue yet.

Recent performance

For Q2 2026, the company reported a net loss of $9.4 million, compared to $10.5 million in Q1 2026; R&D decreased by $1.1 million and G&A increased by $0.7 million. Annual net loss widened from $11.5 million in 2024 to $28.0 million in 2025; diluted EPS went from -$0.19 to -$0.39. Operating cash outflow increased from -$8.2 million in 2024 to -$16.5 million in 2025. As of June 30, 2026, the company held $130.7 million in cash and equivalents, $289.9 million in total assets, and $8.2 million in total liabilities.

Strategy

Management is advancing its IMSR licensing basis, with NRC approval of the PIE methodology topical report and earlier approval of the Principal Design Criteria topical report. It aims to secure site control and complete site characterization at the Texas A&M-RELLIS site, with a ground lease for 77 acres. The company is also engaging in supply chain and commercial partnerships, including with Westinghouse for UF4 supply and a memorandum of understanding with Riot Platforms to co-locate IMSR plants with data centers. Unit economics were updated to $2.7 billion lifetime revenue per plant with a 33% blended gross margin, and the serviceable addressable market estimate was raised to $2.3 trillion by 2050.

Risks

• Limited commercial operating history — The company has no commercial product and a limited track record, making it difficult to evaluate prospects or the total addressable market.
• Development and construction delays — Any delays in developing and constructing IMSR plants or manufacturing key components could materially harm the business and financial condition.
• Market demand uncertainty — If demand for IMSR plants fails to develop sufficiently, the company may not achieve or maintain profitability.
• Customer non-binding agreements — Customers may rescind or back out of non-binding agreements, which could adversely affect future revenue streams.

Outlook

Management expects first commercial operation of the IMSR Plant by the mid-2030s, with fleet operation commencing in the late 2030s. They continue to advance pilot projects TETRA and TEFLA under DOE agreements, with the goal of moving from design to operation. The company also expects to complete site characterization and environmental evaluation at the Texas A&M-RELLIS site, and continues to engage with suppliers and potential customers for its core-unit and fuel salt offerings.