Flibe Energy, Inc.
Flibe Energy is a private Huntsville, Alabama-based developer of liquid-fueled molten salt reactors (LFTR, LFLEUR, SCIFR) using lithium fluoride chemistry and sCO2 power conversion, targeting utilities, the U.S. Department of Defense, and state governments with thorium-fueled, meltdown-proof small modular reactors.
- Company typePrivate
- Founded2011
- HeadquartersHuntsville, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Flibe Energy, Inc. does
Flibe Energy, Inc. is a private U.S. nuclear technology company founded in 2011 and headquartered in Huntsville, Alabama, that develops liquid-fueled molten salt reactors based on lithium fluoride (LiF) chemistry. The company is building a three-reactor portfolio: LFTR (Lithium Fluoride Thorium Reactor), a thermal-spectrum fluid-fueled thorium cycle reactor positioned as the long-term solution; LFLEUR (Lithium Fluoride Low Enriched Uranium Reactor), a near-term-deployable 25-100 MWe design running on commercially available LEU with a planned fuel leasing program; and SCIFR (Sodium-Chloride Integral Fast Reactor), a fast-spectrum chloride reactor that consumes transuranic waste from existing light-water reactors while producing U-233 startup fuel for LFTRs. All three reactors are designed for inherent passive safety (liquid fuel cannot melt down, only freeze), low-pressure (<10 bar) operation, and pairing with a patented supercritical CO2 Brayton power conversion system that delivers >42% thermal-to-electric efficiency.
The company is pre-revenue and currently monetizes only through DOE grants and cost-share awards (cumulative ~$2.6M in 2018 plus a share of a $19M CURIE award in 2026), GAIN Nuclear Energy Vouchers, and an active equity funding round that closed ~$4.5M in December 2023. Planned commercial revenue streams include one-time reactor sales or deployment contracts, a recurring fuel leasing business under LFLEUR, used nuclear fuel recycling services (anchored by the SCIFR design), medical isotope production (Mo-99 and related short-lived fission products), and industrial heat and desalination applications.
The go-to-market motion is direct enterprise and government field sales rather than channel-based distribution. Flibe targets rural electric cooperatives, the U.S. Department of Defense (CONUS base power and grid resiliency), the Tennessee Valley Authority and other utilities, state governments (Alabama, Mississippi, Colorado), and emerging segments such as data center operators, energy-intensive industrials, medical isotope buyers, and nuclear-powered marine shipping. The company has invested in the former TVA Yellow Creek site in Mississippi since 2019, testified before the Colorado and Alabama legislatures, sits in the DOE Defense Production Act Consortium, and was selected for advanced negotiations under the DOE Surplus Plutonium Utilization Program in May 2026.
Flibe Energy, Inc. firmographics
Firmographics- Name
- Flibe Energy, Inc.
- Legal name
- Flibe Energy, Inc.
- Website
- https://flibe.com
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Flibe Energy is a private Huntsville, Alabama-based developer of liquid-fueled molten salt reactors (LFTR, LFLEUR, SCIFR) using lithium fluoride chemistry and sCO2 power conversion, targeting utilities, the U.S. Department of Defense, and state governments with thorium-fueled, meltdown-proof small modular reactors.
- Ownership category
- akta.pro rank
Flibe Energy, Inc. industry classification
Industry- Product category
- Advanced Nuclear Reactors
- NAICS
- Nuclear Electric Power Generation (221113)
- SIC
- Engines & Turbines (3510)
- akta.pro primary industry
- Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors) (EUAKADAC)
- akta.pro secondary industries
- Advanced & Non‑LWR Fuel Manufacturing (TRISO, metallic fuels, HALEU fuels) (EUAKACAG), Reactor Vessel, Internals & Primary Circuit Components (RPV, piping, pumps, valves) (EUAKADAE)
Keywords
Where Flibe Energy, Inc. is headquartered
LocationHeadquarters
- HQ city
- Huntsville
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Flibe Energy, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales
Revenue model
- Nuclear Reactor Sales / Deployment: Flibe Energy plans to deploy factory-built small modular thorium reactors to customers. The company has engaged with rural electric cooperatives, industrial users, and DoD installations. LFLEUR includes a fuel leasing program where Flibe retains ownership of the fuel.
- Fuel Leasing Program: For the LFLEUR product line, Flibe Energy retains ownership of the fuel through a leasing program, assuming fuel responsibility and recertification rather than leaving it to customers. This creates a recurring revenue component tied to reactor operations.
- Nuclear Fuel Recycling Services: Through DOE-funded research and eventual commercial fuel recycling, Flibe plans to offer used nuclear fuel recycling services that recover energy value from spent fuel while reducing waste liabilities.
- Medical Isotopes: Fluid-fueled reactor technology enables low-cost extraction of short-lived fission product medical isotopes (e.g., Molybdenum-99) during reactor operation, creating a secondary revenue stream from non-electricity products.
- Industrial Heat and Desalination: High outlet temperatures enable industrial heat applications and water desalination as secondary products, providing additional revenue opportunities beyond electricity generation.
Go-to-market motion2 records
Distribution channels5 records
Marketing channels6 records
Flibe Energy, Inc. product offering
Product offeringCore offering
Flibe Energy develops liquid-fueled molten salt nuclear reactor technology centered on thorium and low-enriched uranium fuel cycles. The company is building a portfolio of three reactor designs — LFTR, LFLEUR, and SCIFR — coupled with proprietary supercritical CO2 (sCO2) Brayton cycle power conversion systems, targeting deployment for utilities, the U.S. Department of Defense, industrial customers, and data centers. The company also pursues nuclear fuel recycling R&D and medical isotope production as adjacent offerings.
Product overview
Flibe Energy is developing a portfolio of three molten salt reactor designs built on lithium-fluoride technology: LFTR (Lithium Fluoride Thorium Reactor) for long-term thorium fuel cycle utilization, LFLEUR (Lithium Fluoride Low Enriched Uranium Reactor) for near-term deployment using commercially available LEU fuel with a fuel leasing model, and SCIFR (Sodium-Chloride Integral Fast Reactor) as a bridge technology that consumes existing spent nuclear fuel waste while producing uranium-233 to start LFTRs. All three reactors share common technology elements including sCO2 Brayton cycle power conversion systems, inherent safety features through low-pressure operation, and the ability to couple with industrial applications for medical isotopes, water desalination, and spent fuel management.
Differentiator
Problem solved
Functional benefit
Brands
- LFTR: Lithium Fluoride Thorium Reactor - designed to take full advantage of the thorium fuel cycle, bringing many benefits over competing designs. LFTR is the long-term solution for a scalable nuclear future.
- LFLEUR
- SCIFR
Products and services
- LFTR (Lithium Fluoride Thorium Reactor)
Quantifiable outcome
- LFLEUR achieves >42% thermal-to-electricity conversion efficiency (vs ~33% for conventional light-water reactors)
- +4 more outcomes
Companies that use Flibe Energy, Inc.
Customer profileNamed customers7 records
Segments6 records
Ideal customer profiles4 records
Flibe Energy, Inc. technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature9 records
Flibe Energy, Inc. partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core and supporting.
- Metatomic EnergycoreFlibe Energy and Metatomic signed a Memorandum of Understanding to explore strategic collaboration integrating the thorium fuel supply chain with molten salt reactor requirements. Both companies have worked with DOE and national laboratories on proprietary, proliferation-resistant approaches licensable for stakeholders. The MOU aims to develop an integrated, one-stop solution for the thorium economy that supports rather than competes with the existing nuclear industry.
- DOE Defense Production Act ConsortiumcoreFlibe accepted as participant in the DPA Consortium under Executive Order 14302, assigned to three committees focused on fuel cycle including recycling and legacy nuclear material preservation. Consortium enables industry coordination to ensure nuclear fuel supply chain capacity.
- Alabama A&M UniversitysupportingPart of the DOE $19M used nuclear fuel recycling award team led by Flibe Energy. AAMU contributes to the research effort investigating electrochemical methods to process used nuclear fuel through fluoride molten salt.
- Virginia Polytechnic Institute and State University (Virginia Tech)supportingPart of the DOE $19M used nuclear fuel recycling award team led by Flibe Energy. Virginia Tech contributes to laboratory validation and optimization steps for used nuclear fuel electrochemical processing research.
- University of MichigansupportingPart of the DOE $19M used nuclear fuel recycling award team led by Flibe Energy, contributing research capabilities to the electrochemical used nuclear fuel processing development effort.
- Electric Power Research Institute (EPRI)supportingIndustry partner on the DOE $19M used nuclear fuel recycling award team led by Flibe Energy. EPRI contributes industry perspective and research capabilities to the electrochemical fuel recycling development program.
- Tennessee Valley Authority (TVA)supportingGovernment partner on the DOE $19M used nuclear fuel recycling award team led by Flibe Energy. TVA's involvement provides utility-scale perspective and operational expertise to the fuel recycling research program.
- U.S. Department of Energy (DOE)coreDOE is a primary strategic partner through multiple programs: Surplus Plutonium Utilization Program selection (advanced negotiations), $19M SNF recycling award, Defense Production Act Consortium membership, and ongoing GAIN voucher program. DOE's Office of Nuclear Energy provides funding, regulatory guidance, and national lab access.
- Savannah River National Laboratory (SRNL)coreFlibe Energy and SRNL signed an MOU to strengthen research and development collaboration in nuclear energy and advanced nuclear fuel cycles. Areas of collaboration include Flibe reactor and fuel cycle technology, potential projects supporting SRNL enduring missions, thorium-based and LEU-based fuel and supply chain development, and joint research projects and funding collaborations. SRNL brings expertise in nuclear materials management and environmental remediation.
- Argonne National LaboratorycoreGAIN Nuclear Energy Voucher partnership to measure salt properties for lithium fluoride reactor technologies. Argonne provides access to specialized nuclear materials testing and characterization capabilities for Flibe's reactor development.
- Pacific Northwest National Laboratory (PNNL)coreGAIN NE voucher partnership with PNNL to develop improved noble gas management system using metal-organic frameworks for selective xenon and krypton removal from LFTR off-gas. PNNL brings nanostructured materials expertise.
- Oak Ridge National Laboratory (ORNL)coreGAIN voucher partnership for developing the LFTR Preliminary Safeguards Assessment. ORNL is the partner facility with direct heritage from the original 1960s Molten Salt Reactor Program. Also collaborated on fluorination technology development ($2.6M DOE award with PNNL).
Scale indicators8 records
Recent moves8 records
Expansion highlights9 records
Flibe Energy, Inc. competitors and assessment
Company assessmentDirect peers
- Oklo Inc. Oklo develops advanced small fast reactors (Aurora microreactor and Aurora-INL) and was co-selected with Flibe in the DOE Surplus Plutonium Utilization Program. Both target commercial advanced reactor deployment with U.S. utilities and the DoD, and both are pursuing fuel recycling R&D under DOE programs.
- Kairos Power: Kairos Power is developing the fluoride salt-cooled high-temperature reactor (KP-FHR), a molten-fluoride-based advanced reactor. Like Flibe, Kairos uses fluoride salt chemistry, pursues DOE GAIN vouchers and advanced reactor awards, and targets commercial deployment in the 2030s.
- Terrestrial Energy: Terrestrial Energy is developing the Integral Molten Salt Reactor (IMSR), a fluoride-salt-fueled molten salt reactor designed for grid-scale commercial deployment. Both companies pursue Generation IV molten salt designs targeting utility customers with similar regulatory and licensing timelines.
- ThorCon International: ThorCon is developing a shippable, factory-built molten salt reactor (TMSR-500) based on the same ORNL MSRE heritage as Flibe's LFTR. Both pursue thermal-spectrum fluoride-salt molten salt technology and target commercial deployment in international markets.
- Copenhagen Atomics: Copenhagen Atomics is a Danish thorium molten salt reactor developer using a single-fluid MSR approach with fluoride salt chemistry. Both companies pursue the thorium fuel cycle and molten salt technology and engage with IAEA and international MSR ecosystems.
- Moltex Energy: Moltex Energy is developing the Stable Salt Reactor (SSR-W), a molten salt reactor variant focused on spent fuel recycling. Both companies pursue spent nuclear fuel recycling as a commercial service and have received DOE attention for fuel cycle innovation.
Broad incumbents
- TerraPower: TerraPower (backed by Bill Gates) develops the Natrium sodium-cooled fast reactor and pursues advanced reactor commercial deployment with broad industry partnerships. As a larger, well-capitalized Gen IV developer, TerraPower competes for the same DOE programs, utility customers, and policy attention as Flibe.
- X-energy: X-energy develops the Xe-100 high-temperature gas-cooled microreactor and TRISO fuel. While its reactor type differs from Flibe's molten salt design, both target similar SMR commercial deployment and have received DOE Advanced Reactor Demonstration Program support.
Emerging players
- Metatomic Energy: Metatomic Energy is a thorium fuel supply chain developer that signed an MOU with Flibe in April 2026 to integrate the thorium fuel supply chain with molten salt reactor requirements. Metatomic is both a strategic partner and an adjacent peer pursuing the thorium economy.
- Lightbridge Corporation: Lightbridge is developing advanced nuclear fuel technologies for both existing and next-generation reactors, including thorium-based fuel concepts. It is an adjacent peer in the advanced nuclear fuel ecosystem with partial overlap with Flibe's fuel recycling and thorium fuel cycle work.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Flibe Energy, Inc. social profiles
Digital presenceFlibe Energy, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flibe Energy, Inc. leadership team
Management profileNumber of profiles
Profiles9 records
Flibe Energy, Inc. funding detail
Funding detailFunding overview
Funding rounds2 records
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flibe Energy, Inc. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flibe Energy, Inc.
What does Flibe Energy, Inc. do?
Flibe Energy develops liquid-fueled molten salt nuclear reactor technology centered on thorium and low-enriched uranium fuel cycles. The company is building a portfolio of three reactor designs — LFTR, LFLEUR, and SCIFR — coupled with proprietary supercritical CO2 (sCO2) Brayton cycle power conversion systems, targeting deployment for utilities, the U.S. Department of Defense, industrial customers, and data centers. The company also pursues nuclear fuel recycling R&D and medical isotope production as adjacent offerings.
Is Flibe Energy, Inc. a public or private company?
Flibe Energy, Inc. is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Flibe Energy, Inc. founded?
Flibe Energy, Inc. was founded in 2011. It employs 11 to 50 people.
Where is Flibe Energy, Inc. based?
Flibe Energy, Inc. is headquartered in Huntsville, United States, in the North America region.
How does Flibe Energy, Inc. make money?
Five revenue lines are on record. Nuclear Reactor Sales / Deployment is the primary driver. The others are fuel Leasing Program, nuclear Fuel Recycling Services, medical Isotopes and industrial Heat and Desalination.
Who are Flibe Energy, Inc.'s main competitors?
Direct peers on record are Oklo Inc., Kairos Power, Terrestrial Energy, ThorCon International, Copenhagen Atomics and Moltex Energy. Broad incumbents are TerraPower and X-energy. Emerging players are Metatomic Energy and Lightbridge Corporation.
Does Flibe Energy, Inc. have an API?
No public API is recorded for Flibe Energy, Inc..
What industry is Flibe Energy, Inc. in?
Flibe Energy, Inc.'s product category is Advanced Nuclear Reactors. Its primary akta.pro industry code is EUAKADAC, Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors), with a secondary code of EUAKACAG, Advanced & Non‑LWR Fuel Manufacturing (TRISO, metallic fuels, HALEU fuels). Its NAICS code is 221113 and its SIC code is 3510.