Molten Salt Solutions
Molten Salt Solutions is a pre-revenue materials technology company that develops proprietary chromatography and mass spectrometry technology to produce isotopically enriched lithium and chlorine for fusion energy and advanced nuclear reactor developers.
- Company typePrivate
- Founded2018
- HeadquartersSanta Fe, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Molten Salt Solutions does
Molten Salt Solutions is a private materials technology company founded in 2018 and headquartered in Santa Fe, New Mexico. It develops and is commercializing technology for producing isotopically enriched lithium (Li-6 and Li-7) and chlorine (Cl-37) isotopes, along with novel metal salt syntheses, to serve the fusion energy and advanced nuclear reactor industries. The company's core intellectual property rests on proprietary High Speed Counter Current Chromatography (HSCCC) for isotope separation and Distance-of-Flight Mass Spectrometry (DOF-MS), licensed from the University of New Mexico, for real-time process monitoring. It also offers chloride and fluoride salt synthesis processes developed with Los Alamos National Laboratory that provide cost, safety, and environmental advantages over conventional production methods.
The company is currently pre-revenue and operating at pilot scale, scaling up its first commercial production of enriched lithium isotopes. It generates no disclosed revenue today, with first commercial deliveries planned for 2027 under strategic sales agreements with fusion energy developers Type One Energy and Gauss Fusion, and test-scale lithium-7 deliveries to Fissionaire beginning in 2028. The company has secured approximately $3.3 million in cumulative funding, including a $3 million seed round from Future Ventures and True Ventures in December 2024, prior NSF SBIR and New Mexico Economic Development Department grants, and DOE INFUSE program funding awarded in October 2025 to develop fusion-grade lithium material standards in collaboration with Los Alamos National Laboratory, the University of New Mexico, and Element 3 Energy. Its go-to-market is direct enterprise sales to a concentrated set of fusion and advanced fission reactor developers.
Molten Salt Solutions firmographics
Firmographics- Name
- Molten Salt Solutions
- Legal name
- Molten Salt Solutions
- Website
- https://moltensaltsolutions.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Molten Salt Solutions is a pre-revenue materials technology company that develops proprietary chromatography and mass spectrometry technology to produce isotopically enriched lithium and chlorine for fusion energy and advanced nuclear reactor developers.
- Ownership category
- akta.pro rank
Molten Salt Solutions industry classification
Industry- Product category
- Nuclear Fuel Materials
- NAICS
- Basic Chemical Manufacturing (3251)
- SIC
- Industrial Inorganic Chemicals (2810), Miscellaneous Chemical Products (2890)
- akta.pro primary industry
- Fuel Cycle Support Services (Engineering, licensing support, conversion/enrichment contracting) (EUAKACAL)
Keywords
Where Molten Salt Solutions is headquartered
LocationHeadquarters
- HQ city
- Santa Fe
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Molten Salt Solutions business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure
Revenue model
- Enriched Lithium Isotope Sales: Sale of isotopically enriched lithium-6 and lithium-7 isotopes to fusion and advanced nuclear reactor developers. Strategic agreements with Type One Energy and Gauss Fusion with first deliveries planned for 2027, and commercial agreement with Fissionaire for lithium-7 with test-scale deliveries beginning in 2028.
- Lithium-7 Supply Agreement: Commercial supply of high-purity lithium-7 to Fissionaire for use in proliferation-resistant molten salt breeder reactor technology, expanding to multi-ton quantities as deployment advances.
Go-to-market motion2 records
Distribution channels1 record
Marketing channels5 records
Molten Salt Solutions product offering
Product offeringCore offering
Molten Salt Solutions produces isotopically enriched lithium-6 and lithium-7 for fusion and molten salt fission reactors using proprietary High Speed Counter Current Chromatography (HSCCC) and Distance-of-Flight Mass Spectrometry (DOF-MS). The company also enriches chlorine isotopes and synthesizes metal chloride and fluoride salts using processes licensed from Los Alamos National Laboratory. It is scaling up the first commercial-scale production of enriched lithium isotopes for fusion and advanced nuclear customers.
Product overview
Molten Salt Solutions offers a portfolio of lithium and chlorine isotope enrichment products enabled by proprietary chromatography separation technology and mass spectrometry technology. The core offerings include enriched Li-6 and Li-7 isotopes for fusion and molten salt fission reactors, complemented by chloride and fluoride salt synthesis capabilities developed with Los Alamos National Laboratory. The company operates at pilot production scale and is scaling up the first commercial production of enriched lithium isotopes using its unique high speed counter current chromatography and distance-of-flight mass spectrometry platforms.
Differentiator
Problem solved
Functional benefit
Products and services
- Enriched Lithium-6 Isotope Isotopically enriched lithium-6 produced via proprietary HSCCC separation technology for fusion energy companies; Li-6 absorbs neutrons to yield tritium, a critical fuel for nuclear fusion energy production.
- Enriched Lithium-7 Isotope Isotopically enriched lithium-7 produced via proprietary HSCCC separation technology for molten salt reactor and pressurized water reactor customers; Li-7 is neutron-transparent and used as a fluoride salt in molten salt reactors and as a hydroxide to stabilize pH in PWR cooling systems.
- Enriched Chlorine Isotopes Enrichment of chlorine isotopes (including Cl-37) for fast breeder molten salt reactor customers; Cl-37 is preferred because Cl-35 neutron absorption forms Cl-36 which decays to S-36.
- Metal Chloride Salt Synthesis Production-on-demand synthesis of metal chloride salts such as dUCl3 using a process developed by Los Alamos National Laboratory, providing substantial cost, safety, and environmental advantages over conventional production methods for nuclear applications.
- Metal Fluoride Salt Synthesis Selective synthesis of metal fluoride salts using a process developed by Los Alamos National Laboratory, enabling production of salts for advanced nuclear and molten salt reactor applications on demand.
Quantifiable outcome
- First commercial-scale lithium isotope enrichment process development
- +1 more outcomes
Companies that use Molten Salt Solutions
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Molten Salt Solutions technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Molten Salt Solutions partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered flagship, core and minor.
- FissionaireflagshipCommercial agreement to supply lithium-7 for use in proliferation-resistant molten salt breeder reactor technology. Early test-scale deliveries beginning in 2028, expanding to multi-ton quantities as deployment advances.
- Type One EnergyflagshipStrategic sales agreement to supply enriched lithium isotopes for fusion energy systems. First deliveries planned for 2027 to support the company's next-generation fusion systems.
- Gauss FusionflagshipStrategic sales agreement to supply enriched lithium isotopes for fusion energy systems. First deliveries planned for 2027.
- Los Alamos National LaboratorycoreCollaboration on DOE INFUSE program to develop fusion-grade lithium material standards and specifications for fusion energy systems. Joint work to define, characterize, and validate lithium specifications to support fusion reactor development.
- University of New MexicocoreCollaboration with Los Alamos National Laboratory on DOE INFUSE project to establish fusion-grade lithium material specifications and validate standards for the fusion energy industry.
- Element 3 EnergycoreCollaboration on DOE INFUSE funded project to define and validate lithium specifications to support fusion reactor development.
- New Mexico Fusion Igniter ConsortiumminorPart of the Fusion Igniter consortium focused on accelerating fusion technology development by supporting early-stage companies crucial to the fusion supply chain. Harnessing New Mexico's proximity to national laboratories and research institutions.
Scale indicators4 records
Recent moves5 records
Expansion highlights5 records
Molten Salt Solutions competitors and assessment
Company assessmentEmerging players
- Flibe Energy: US startup developing liquid-fluoride thorium reactors using FLiBe salts. Comparable as a niche MSR developer and potential customer for MSS's Li-7 and fluoride salt synthesis offerings.
- Terrestrial Energy: Canadian developer of integral molten salt reactors. Comparable as a near-term potential Li-7 customer and as a fellow emerging player in the molten salt reactor supply chain ecosystem.
- Kairos Power: US developer of fluoride salt-cooled high-temperature advanced reactors. Comparable as a potential downstream customer for MSS's Li-7 and fluoride salt synthesis products and as a fellow New Mexico-adjacent advanced nuclear developer.
- TerraPower: Bill Gates-backed advanced nuclear developer building the Natrium sodium-cooled fast reactor. Comparable as a high-profile advanced reactor customer profile and adjacent player in the next-generation nuclear fuel cycle.
- Commonwealth Fusion Systems: Leading private fusion developer (MIT spin-out) building a tokamak targeting commercial fusion power. Comparable as a flagship potential long-term Li-6 customer for tritium breeding and as a fellow deep-tech nuclear energy company.
Direct peers
- Centrus Energy: Public US enrichment company operating the only operating HALEU enrichment cascade. Most directly comparable to MSS as a Western commercial-scale stable isotope enrichment supplier serving the advanced nuclear fuel cycle.
- SHINE Technologies: Emerging isotope production company using novel fusion-driven neutron sources to produce medical and industrial isotopes. Comparable as a venture-backed, non-traditional isotope supplier scaling novel separation/production technology to commercial scale.
- NorthStar Medical Radioisotopes: US company commercializing non-uranium based medical isotope production. Comparable as an emerging domestic supplier building commercial isotope capacity using proprietary production methods to serve critical, supply-constrained end markets.
Broad incumbents
- Urenco: One of the world's largest uranium enrichment companies using centrifuge technology. Comparable as a broad incumbent in nuclear isotope enrichment with overlapping customer base in the nuclear fuel cycle, though focused on uranium rather than lithium isotopes.
- Orano: French nuclear fuel cycle company covering uranium mining, conversion, enrichment and recycling. Comparable as a broad incumbent in nuclear fuel cycle services with relevant isotopic separation expertise and nuclear-grade material handling.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Molten Salt Solutions social profiles
Digital presenceMolten Salt Solutions financial estimates
Financial estimateRevenue estimate
Valuation estimate
Molten Salt Solutions leadership team
Management profileNumber of profiles
Profiles6 records
Molten Salt Solutions funding detail
Funding detailFunding overview
Funding rounds7 records
Investors9 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Molten Salt Solutions 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 Molten Salt Solutions
What does Molten Salt Solutions do?
Molten Salt Solutions produces isotopically enriched lithium-6 and lithium-7 for fusion and molten salt fission reactors using proprietary High Speed Counter Current Chromatography (HSCCC) and Distance-of-Flight Mass Spectrometry (DOF-MS). The company also enriches chlorine isotopes and synthesizes metal chloride and fluoride salts using processes licensed from Los Alamos National Laboratory. It is scaling up the first commercial-scale production of enriched lithium isotopes for fusion and advanced nuclear customers.
Is Molten Salt Solutions a public or private company?
Molten Salt Solutions is a private company. It is classified as venture growth investor backed and is currently operating.
When was Molten Salt Solutions founded?
Molten Salt Solutions was founded in 2018. It employs 11 to 50 people.
Where is Molten Salt Solutions based?
Molten Salt Solutions is headquartered in Santa Fe, United States, in the North America region.
How does Molten Salt Solutions make money?
Two revenue lines are on record. Enriched Lithium Isotope Sales are the primary driver. The others are lithium-7 Supply Agreement.
Who are Molten Salt Solutions's main competitors?
Emerging players on record are Flibe Energy, Terrestrial Energy, Kairos Power, TerraPower and Commonwealth Fusion Systems. Direct peers are Centrus Energy, SHINE Technologies and NorthStar Medical Radioisotopes. Broad incumbents are Urenco and Orano.
Does Molten Salt Solutions have an API?
No public API is recorded for Molten Salt Solutions.
What industry is Molten Salt Solutions in?
Molten Salt Solutions's product category is Nuclear Fuel Materials. Its primary akta.pro industry code is EUAKACAL, Fuel Cycle Support Services (Engineering, licensing support, conversion/enrichment contracting). Its NAICS code is 3251 and its SIC code is 2810.