Terrestrial Energy Receives NRC Safety Evaluation Report Approval
Written by Emily J. Thompson, Senior Investment Analyst
Updated: May 12 2026
0mins
Should l Buy IMSR?
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."
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Analyst Views on IMSR
Wall Street analysts forecast IMSR stock price to rise
1 Analyst Rating
1 Buy
0 Hold
0 Sell
Moderate Buy
Current: 6.530
Low
12.00
Averages
12.00
High
12.00
Current: 6.530
Low
12.00
Averages
12.00
High
12.00
About IMSR
Terrestrial Energy Inc. is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR). The IMSR technology captures the transformative operating benefits of molten salt reactor technology in a small modular plant design. The Company’s IMSR plants supply zero-carbon, clean, high-temperature industrial heat and/or electricity for a dual-use energy role. The Company has a pipeline of multiple IMSR plant projects, which are sourced from a portfolio of consortium relationships. These relationships offer sites, construction, fuel supply, plant operating services, as well as heat and power offtake, with the capabilities to deliver further IMSR plant projects. The Company covers a range of deployment use-cases including co-location for data center power supply, co-located industrial plant heat and power supply, and distributed on-grid generation.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Terrestrial Energy Q1 2026 Earnings Call Highlights
- Financial Overview: As of the end of Q1 2026, Terrestrial Energy reported total cash and cash investments of $289.9 million, down from $297.8 million at the end of 2025, primarily due to a cash burn of $7.9 million during the quarter, reflecting the company's funding utilization as it expands projects and resources.
- Project Progress Update: The company completed an OTA contract with the DOE to advance the TETRA project this quarter and submitted final reports to the NRC supporting its event methodology, receiving approval for the Safety Evaluation Report, marking significant progress in regulatory compliance.
- Commercial Pipeline Expansion: Management disclosed that the current commercial pipeline consists of approximately 10 IMSR plant projects with a total indicative power capacity of 7.8 gigawatts, indicating the company's potential for expansion in the nuclear energy market and future growth opportunities.
- Future Outlook: While no specific revenue or EPS guidance was provided, management reiterated expectations for 1 to 3 additional projects in 2026, demonstrating confidence in future growth, while also anticipating an increase in cash burn as the organization and project scale up.
See More
Terrestrial Energy Reports Q1 Net Loss of $10.5 Million
- Financial Decline: Terrestrial Energy reported a Q1 net loss of $10.5 million, significantly up from a $6.2 million loss in Q4 2025, indicating increased financial pressure on the company.
- R&D Spending Increase: R&D expenses rose by $3.2 million, primarily to advance fuel development and graphite testing programs, reflecting the company's ongoing commitment to technological innovation, albeit at the cost of short-term financial strain.
- Rising Administrative Costs: General and administrative expenses increased by $4.0 million due to higher personnel-related costs and stock-based compensation, which may impact the company's future profitability and cash flow.
- Improved Other Income: Other income (expense) increased by $2.8 million, driven by decreased interest expenses and increased interest and dividend income, indicating some positive changes in the company's financial structure.
See More
Terrestrial Energy Appoints New VP of Investor and Public Relations
- Executive Appointment: Terrestrial Energy has appointed Tyler Gronbach as Vice President of Investor Relations and Public Relations to accelerate the commercialization of its IMSR technology and enhance engagement with institutional investors and financial media, thereby increasing market influence.
- Market Demand Response: CEO Simon Irish emphasized that the commercial performance of IMSR technology will drive rapid expansion in nuclear energy to meet market and policy needs, with Gronbach's role ensuring effective messaging that boosts investor confidence.
- Rich Industry Experience: Gronbach previously served as Vice President of External Affairs at Wolfspeed, where he successfully supported the company's transformation from a legacy LED business to a silicon carbide leader, attracting over $6.5 billion in capital raises, showcasing his capabilities in communication and market strategy.
- Nuclear Innovation Potential: The design and technological advantages of the IMSR reactor are seen as crucial to meeting government and industry demands for clean, reliable energy, and Gronbach's experience will help articulate this transformative narrative, driving the company's growth in the nuclear energy market.
See More
Energy Stocks Decline, NYSE Energy Sector Index Falls 3.8%
- Market Weakness: Energy stocks experienced a broad decline on Wednesday afternoon, with the NYSE Energy Sector Index falling 3.8%, indicating growing concerns about energy demand prospects that could undermine investor confidence.
- Investor Sentiment Deteriorates: Signs of a slowing global economy have led to diminished interest in energy stocks among investors, resulting in decreased trading volumes that further exacerbate downward pressure on prices.
- Significant Industry Impact: The decline in energy stocks may affect the financing capabilities and future investment plans of related companies, particularly in the capital-intensive energy sector, potentially leading to project delays or reductions.
- Increased Market Volatility: As uncertainty around energy prices rises, investors may shift towards more stable assets, resulting in heightened volatility in energy stocks that could impact overall market stability.
See More
Terrestrial Energy and Riot Platforms Sign MoU for Nuclear-Powered Data Centers
- MoU Signing: Terrestrial Energy and Riot Platforms have signed a memorandum of understanding to co-develop nuclear-powered data centers, addressing the energy needs for AI and high-performance computing, marking a strategic collaboration in the clean energy sector.
- Project Scale and Plans: The initiative includes multiple 390 MW IMSR plants, scaling up to approximately 4 GW capacity, ensuring a long-term energy supply for hyperscale data centers to meet the increasing market demand.
- Hybrid Energy Utilization: The projects are set to commence at RIOT sites in Texas and Kentucky, combining IMSR's nuclear technology with RIOT's data center expertise, allowing for hybrid energy use, including natural gas, to support early operations and enhance power reliability.
- Investor Confidence Boost: This collaboration strengthens RIOT's power-first strategy and positions IMSR to provide clean, low-cost energy for rising AI-driven demand, resulting in an 11% increase in RIOT's stock to $22.79 and a 7% rise in IMSR's stock to $7.71.
See More
Terrestrial Energy to Report Q1 2026 Earnings on May 14
- Earnings Release Schedule: Terrestrial Energy will report its Q1 2026 earnings before the market opens on May 14, 2026, with a conference call at 8:30 a.m. ET featuring CEO Simon Irish and CFO Brian Thrasher, aimed at providing investors with insights into the company's financial health and future outlook.
- Webcast Details: The conference call will be broadcast live via webcast, with a replay available afterward, ensuring all investors can access critical information, thereby enhancing the company's transparency and fostering investor trust.
- Nuclear Technology Innovation: Terrestrial Energy focuses on developing Generation IV small modular nuclear power plants using its proprietary Integral Molten Salt Reactor (IMSR) technology, designed to deliver low-cost, reliable clean energy while supporting diverse industrial applications, thus extending nuclear energy's reach beyond traditional power markets.
- Future Development Plans: The company aims to build, license, and commission its first IMSR plants in the early 2030s, actively collaborating with regulators, suppliers, and industrial partners, demonstrating its strategic commitment and market potential in the clean energy sector.
See More
Terrestrial Energy Q1 2026 Earnings Call Highlights
- Financial Overview: As of the end of Q1 2026, Terrestrial Energy reported total cash and cash investments of $289.9 million, down from $297.8 million at the end of 2025, primarily due to a cash burn of $7.9 million during the quarter, reflecting the company's funding utilization as it expands projects and resources.
- Project Progress Update: The company completed an OTA contract with the DOE to advance the TETRA project this quarter and submitted final reports to the NRC supporting its event methodology, receiving approval for the Safety Evaluation Report, marking significant progress in regulatory compliance.
- Commercial Pipeline Expansion: Management disclosed that the current commercial pipeline consists of approximately 10 IMSR plant projects with a total indicative power capacity of 7.8 gigawatts, indicating the company's potential for expansion in the nuclear energy market and future growth opportunities.
- Future Outlook: While no specific revenue or EPS guidance was provided, management reiterated expectations for 1 to 3 additional projects in 2026, demonstrating confidence in future growth, while also anticipating an increase in cash burn as the organization and project scale up.
See More
Terrestrial Energy Reports Q1 Net Loss of $10.5 Million
- Financial Decline: Terrestrial Energy reported a Q1 net loss of $10.5 million, significantly up from a $6.2 million loss in Q4 2025, indicating increased financial pressure on the company.
- R&D Spending Increase: R&D expenses rose by $3.2 million, primarily to advance fuel development and graphite testing programs, reflecting the company's ongoing commitment to technological innovation, albeit at the cost of short-term financial strain.
- Rising Administrative Costs: General and administrative expenses increased by $4.0 million due to higher personnel-related costs and stock-based compensation, which may impact the company's future profitability and cash flow.
- Improved Other Income: Other income (expense) increased by $2.8 million, driven by decreased interest expenses and increased interest and dividend income, indicating some positive changes in the company's financial structure.
See More
Terrestrial Energy Appoints New VP of Investor and Public Relations
- Executive Appointment: Terrestrial Energy has appointed Tyler Gronbach as Vice President of Investor Relations and Public Relations to accelerate the commercialization of its IMSR technology and enhance engagement with institutional investors and financial media, thereby increasing market influence.
- Market Demand Response: CEO Simon Irish emphasized that the commercial performance of IMSR technology will drive rapid expansion in nuclear energy to meet market and policy needs, with Gronbach's role ensuring effective messaging that boosts investor confidence.
- Rich Industry Experience: Gronbach previously served as Vice President of External Affairs at Wolfspeed, where he successfully supported the company's transformation from a legacy LED business to a silicon carbide leader, attracting over $6.5 billion in capital raises, showcasing his capabilities in communication and market strategy.
- Nuclear Innovation Potential: The design and technological advantages of the IMSR reactor are seen as crucial to meeting government and industry demands for clean, reliable energy, and Gronbach's experience will help articulate this transformative narrative, driving the company's growth in the nuclear energy market.
See More
Energy Stocks Decline, NYSE Energy Sector Index Falls 3.8%
- Market Weakness: Energy stocks experienced a broad decline on Wednesday afternoon, with the NYSE Energy Sector Index falling 3.8%, indicating growing concerns about energy demand prospects that could undermine investor confidence.
- Investor Sentiment Deteriorates: Signs of a slowing global economy have led to diminished interest in energy stocks among investors, resulting in decreased trading volumes that further exacerbate downward pressure on prices.
- Significant Industry Impact: The decline in energy stocks may affect the financing capabilities and future investment plans of related companies, particularly in the capital-intensive energy sector, potentially leading to project delays or reductions.
- Increased Market Volatility: As uncertainty around energy prices rises, investors may shift towards more stable assets, resulting in heightened volatility in energy stocks that could impact overall market stability.
See More
Terrestrial Energy and Riot Platforms Sign MoU for Nuclear-Powered Data Centers
- MoU Signing: Terrestrial Energy and Riot Platforms have signed a memorandum of understanding to co-develop nuclear-powered data centers, addressing the energy needs for AI and high-performance computing, marking a strategic collaboration in the clean energy sector.
- Project Scale and Plans: The initiative includes multiple 390 MW IMSR plants, scaling up to approximately 4 GW capacity, ensuring a long-term energy supply for hyperscale data centers to meet the increasing market demand.
- Hybrid Energy Utilization: The projects are set to commence at RIOT sites in Texas and Kentucky, combining IMSR's nuclear technology with RIOT's data center expertise, allowing for hybrid energy use, including natural gas, to support early operations and enhance power reliability.
- Investor Confidence Boost: This collaboration strengthens RIOT's power-first strategy and positions IMSR to provide clean, low-cost energy for rising AI-driven demand, resulting in an 11% increase in RIOT's stock to $22.79 and a 7% rise in IMSR's stock to $7.71.
See More
Terrestrial Energy to Report Q1 2026 Earnings on May 14
- Earnings Release Schedule: Terrestrial Energy will report its Q1 2026 earnings before the market opens on May 14, 2026, with a conference call at 8:30 a.m. ET featuring CEO Simon Irish and CFO Brian Thrasher, aimed at providing investors with insights into the company's financial health and future outlook.
- Webcast Details: The conference call will be broadcast live via webcast, with a replay available afterward, ensuring all investors can access critical information, thereby enhancing the company's transparency and fostering investor trust.
- Nuclear Technology Innovation: Terrestrial Energy focuses on developing Generation IV small modular nuclear power plants using its proprietary Integral Molten Salt Reactor (IMSR) technology, designed to deliver low-cost, reliable clean energy while supporting diverse industrial applications, thus extending nuclear energy's reach beyond traditional power markets.
- Future Development Plans: The company aims to build, license, and commission its first IMSR plants in the early 2030s, actively collaborating with regulators, suppliers, and industrial partners, demonstrating its strategic commitment and market potential in the clean energy sector.
See More
