Company lists · Data refreshed September 2026
Top 25 Advanced reactor manufacturers based in the United States
RevenueBase identified 95 company matches for advanced reactor manufacturers associated with the United States as of September 2026 and tracks 24,281 professional contacts across them, including 1,047 with verified work emails. New York is the largest hub.
This list covers company matches for advanced reactor manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest advanced reactor manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,898 contacts → | ||||
Exact match “Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 3,832 contacts → | ||||
Exact match “At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 1,254 contacts → | ||||
Exact match “EnergySolutions is an international nuclear services company headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, with operations across the United States and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 1,055 contacts → | ||||
Exact match “X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 913 contacts → | ||||
Exact match “TerraPower is a leading nuclear innovation company that strives to improve the world through nuclear energy and science.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 494 contacts → | ||||
Exact match “NuScale has designed a new kind of nuclear power plant that is smarter, safer, cleaner, and more cost competitive than the large gigawatt nuclear power plants of the past.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 485 contacts → | ||||
Exact match “Kairos Power has a mission to enable the world’s clean energy transition to improve people’s quality of life while protecting the environment.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 404 contacts → | ||||
Exact match “GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 234 contacts → | ||||
Exact match “Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 189 contacts → | ||||
Exact match “Radiant is building the world’s first mass-produced portable nuclear microreactors.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 129 contacts → | ||||
Exact match “Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 119 contacts → | ||||
Exact match “Aalo Atomics designs and builds factory-manufactured nuclear power plants for data centers, industry, and cities.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 118 contacts → | ||||
Exact match “At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 95 contacts → | ||||
Exact match “Terrestrial Energy is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR) technology.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 61 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 50 contacts → | ||||
Exact match “NANO Nuclear Energy Inc.(NASDAQ: NNE) NANO Nuclear Energy Inc.(NASDAQ: NNE) is a North American advanced technology-driven nuclear energy company seeking to become a commercially…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 49 contacts → | ||||
Exact match “For over 35 years, Crystaphase has provided reactor solutions to hundreds of refining, petrochemical, and chemical plants worldwide.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 45 contacts → | ||||
Exact match “Our mission is to develop and deploy nuclear-based power generating equipment that is safe, commercially competitive, and simple to use.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 38 contacts → | ||||
Exact match “Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 36 contacts → | ||||
Exact match “At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 36 contacts → | ||||
Exact match “Natura Resources is committed to answering the world's increased demand for reliable energy, medical isotopes, and clean water by developing commercially deployable molten salt…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 34 contacts → | ||||
Exact match “RbM Services, LLC has been manufacturing nuclear medical devices in East Tennessee for more than twenty years.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 33 contacts → | ||||
Exact match “Founded in 1979 and now an EnergySolutions company, WMG, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 25 contacts → | ||||
Exact match “Lightbridge is developing and commercializing next generation nuclear fuel technology that will significantly improve the economics and safety of existing and new reactors, with a…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 25 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “advanced reactor manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 95 advanced reactor manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 1,047 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Advanced reactor manufacturers based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 95 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “advanced reactor manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,047 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “advanced reactor manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many advanced reactor manufacturers are there based in the United States?
RevenueBase identified 95 company matches for advanced reactor manufacturers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Westinghouse Electric Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most advanced reactor manufacturers?
New York leads with 6 company records, followed by Austin (4) and Charlotte (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,047 professional contacts with verified work emails tracked across these 95 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 95 advanced reactor manufacturers based in the United States. Start with a free account, no credit card.
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Advanced reactor manufacturers by geography
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- New lists
- Advanced reactor manufacturers based in France
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Company intelligence · public preview
Top 25 advanced reactor manufacturers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 95 matching company records for advanced reactor manufacturers based in the United States, with 24,281 tracked contacts and 1,047 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 advanced reactor manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Westinghouse Electric Companywestinghousenuclear.comHQ: Cranberry Township, PA, United StatesReported employees: 5,001-10,000 | Cranberry Township, PA, United States | 5,001-10,000 | Exact match | 10,898 contacts → |
“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  BWXTbwxt.comHQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,832 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Energysolutionsenergysolutions.comHQ: Salt Lake City, UT, United StatesReported employees: 1,001-5,000 | Salt Lake City, UT, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“EnergySolutions is an international nuclear services company headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, with operations across the United States and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  X-Energyx-energy.comHQ: Rockville, MD, United StatesReported employees: 501-1,000 | Rockville, MD, United States | 501-1,000 | Exact match | 1,055 contacts → |
“X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Terrapowerterrapower.comHQ: Bellevue, WA, United StatesReported employees: 501-1,000 | Bellevue, WA, United States | 501-1,000 | Exact match | 913 contacts → |
“TerraPower is a leading nuclear innovation company that strives to improve the world through nuclear energy and science.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Nuscale Powernuscalepower.comHQ: Corvallis, OR, United StatesReported employees: 201-500 | Corvallis, OR, United States | 201-500 | Exact match | 494 contacts → |
“NuScale has designed a new kind of nuclear power plant that is smarter, safer, cleaner, and more cost competitive than the large gigawatt nuclear power plants of the past.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kairos Powerkairospower.comHQ: Alameda, CA, United StatesReported employees: 501-1,000 | Alameda, CA, United States | 501-1,000 | Exact match | 485 contacts → |
“Kairos Power has a mission to enable the world’s clean energy transition to improve people’s quality of life while protecting the environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  GSE Solutionsgses.comHQ: Columbia, MD, United StatesReported employees: 201-500 | Columbia, MD, United States | 201-500 | Exact match | 404 contacts → |
“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Paragon Energy Solutionsparagones.comHQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 234 contacts → |
“Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Radiantradiantnuclear.comHQ: El Segundo, CA, United StatesReported employees: 51-200 | El Segundo, CA, United States | 51-200 | Exact match | 189 contacts → |
“Radiant is building the world’s first mass-produced portable nuclear microreactors.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  HI Tech Solutionshtsnuclear.comHQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 129 contacts → |
“Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Aalo Atomicsaalo.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 119 contacts → |
“Aalo Atomics designs and builds factory-manufactured nuclear power plants for data centers, industry, and cities.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Atkins Nuclear Solutions USatkinsglobal.comHQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 118 contacts → |
“At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Terrestrial Energyterrestrialenergy.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 95 contacts → |
“Terrestrial Energy is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR) technology.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Zachry Nuclear Engineering, INCzachrynuclear.com HQ: Stonington, CT, United StatesReported employees: 51-200 | Stonington, CT, United States | 51-200 | Exact match | 61 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  Nano Nuclear Energy Inc. Nasdaq NNEnanonuclearenergy.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 50 contacts → |
“NANO Nuclear Energy Inc.(NASDAQ: NNE) NANO Nuclear Energy Inc.(NASDAQ: NNE) is a North American advanced technology-driven nuclear energy company seeking to become a commercially…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Crystaphasecrystaphase.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 49 contacts → |
“For over 35 years, Crystaphase has provided reactor solutions to hundreds of refining, petrochemical, and chemical plants worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ultra Safe Nuclearusnc.comHQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 45 contacts → |
“Our mission is to develop and deploy nuclear-based power generating equipment that is safe, commercially competitive, and simple to use.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Master-Lee Energy Services Corporationmasterlee.comHQ: Latrobe, PA, United StatesReported employees: 201-500 | Latrobe, PA, United States | 201-500 | Exact match | 38 contacts → |
“Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Paschal Solutions, INCpaschalsolutions.comHQ: Oak Ridge, TN, United StatesReported employees: 51-200 | Oak Ridge, TN, United States | 51-200 | Exact match | 36 contacts → |
“At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Natura Resourcesnaturaresources.energy HQ: Abilene, TX, United StatesReported employees: Not recorded | Abilene, TX, United States | Not recorded | Exact match | 36 contacts → |
“Natura Resources is committed to answering the world's increased demand for reliable energy, medical isotopes, and clean water by developing commercially deployable molten salt…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  RBM Services, LLCrbm-services.comHQ: Oak Ridge, TN, United StatesReported employees: 11-50 | Oak Ridge, TN, United States | 11-50 | Exact match | 34 contacts → |
“RbM Services, LLC has been manufacturing nuclear medical devices in East Tennessee for more than twenty years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Wmg, INCwmginc.comHQ: Peekskill, NY, United StatesReported employees: 11-50 | Peekskill, NY, United States | 11-50 | Exact match | 33 contacts → |
“Founded in 1979 and now an EnergySolutions company, WMG, Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Lightbridge Corporationltbridge.comHQ: Reston, VA, United StatesReported employees: 11-50 | Reston, VA, United States | 11-50 | Exact match | 25 contacts → |
“Lightbridge is developing and commercializing next generation nuclear fuel technology that will significantly improve the economics and safety of existing and new reactors, with a…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tubemaster, INCtubemasterinc.com HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 25 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 95 company matches
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Advanced reactor manufacturers: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
95 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 95 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for advanced reactor manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many advanced reactor manufacturers did RevenueBase find based in the United States?
The saved snapshot records 95 matching company records, 24,281 tracked contacts and 1,047 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Advanced reactor manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 advanced reactor manufacturers based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/advanced-reactor-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Advanced reactor manufacturers based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 advanced reactor manufacturers based in the United States
RevenueBase records 95 matching company records for advanced reactor manufacturers based in the United States, with 24,281 tracked contacts and 1,047 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 advanced reactor manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Westinghouse Electric Companywestinghousenuclear.com HQ: Cranberry Township, PA, United StatesReported employees: 5,001-10,000 | Cranberry Township, PA, United States | 5,001-10,000 | Exact match | 10,898 contacts → |
“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | BWXTbwxt.com HQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,832 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Energysolutionsenergysolutions.com HQ: Salt Lake City, UT, United StatesReported employees: 1,001-5,000 | Salt Lake City, UT, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“EnergySolutions is an international nuclear services company headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, with operations across the United States and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | X-Energyx-energy.com HQ: Rockville, MD, United StatesReported employees: 501-1,000 | Rockville, MD, United States | 501-1,000 | Exact match | 1,055 contacts → |
“X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Terrapowerterrapower.com HQ: Bellevue, WA, United StatesReported employees: 501-1,000 | Bellevue, WA, United States | 501-1,000 | Exact match | 913 contacts → |
“TerraPower is a leading nuclear innovation company that strives to improve the world through nuclear energy and science.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Nuscale Powernuscalepower.com HQ: Corvallis, OR, United StatesReported employees: 201-500 | Corvallis, OR, United States | 201-500 | Exact match | 494 contacts → |
“NuScale has designed a new kind of nuclear power plant that is smarter, safer, cleaner, and more cost competitive than the large gigawatt nuclear power plants of the past.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kairos Powerkairospower.com HQ: Alameda, CA, United StatesReported employees: 501-1,000 | Alameda, CA, United States | 501-1,000 | Exact match | 485 contacts → |
“Kairos Power has a mission to enable the world’s clean energy transition to improve people’s quality of life while protecting the environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | GSE Solutionsgses.com HQ: Columbia, MD, United StatesReported employees: 201-500 | Columbia, MD, United States | 201-500 | Exact match | 404 contacts → |
“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Paragon Energy Solutionsparagones.com HQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 234 contacts → |
“Paragon tackles the most difficult challenges of the nuclear industry-those faced by the current operating fleet as well as the next generation of advanced reactors.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Radiantradiantnuclear.com HQ: El Segundo, CA, United StatesReported employees: 51-200 | El Segundo, CA, United States | 51-200 | Exact match | 189 contacts → |
“Radiant is building the world’s first mass-produced portable nuclear microreactors.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HI Tech Solutionshtsnuclear.com HQ: Kennewick, WA, United StatesReported employees: 501-1,000 | Kennewick, WA, United States | 501-1,000 | Exact match | 129 contacts → |
“Hi Tech Solutions provides services to the nuclear power generation industry in four main areas: outage services (plant outages and reactor maintenance), nuclear fuel cycle…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Aalo Atomicsaalo.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 119 contacts → |
“Aalo Atomics designs and builds factory-manufactured nuclear power plants for data centers, industry, and cities.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Atkins Nuclear Solutions USatkinsglobal.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 118 contacts → |
“At Atkins Nuclear Solutions US, we offer client solutions crafted by the best engineers and specialists in the industry, served with truly exceptional customer service.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Terrestrial Energyterrestrialenergy.com HQ: Charlotte, NC, United StatesReported employees: 51-200 | Charlotte, NC, United States | 51-200 | Exact match | 95 contacts → |
“Terrestrial Energy is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR) technology.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Zachry Nuclear Engineering, INCzachrynuclear.com HQ: Stonington, CT, United StatesReported employees: 51-200 | Stonington, CT, United States | 51-200 | Exact match | 61 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Nano Nuclear Energy Inc. Nasdaq NNEnanonuclearenergy.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 50 contacts → |
“NANO Nuclear Energy Inc.(NASDAQ: NNE) NANO Nuclear Energy Inc.(NASDAQ: NNE) is a North American advanced technology-driven nuclear energy company seeking to become a commercially…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Crystaphasecrystaphase.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 49 contacts → |
“For over 35 years, Crystaphase has provided reactor solutions to hundreds of refining, petrochemical, and chemical plants worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ultra Safe Nuclearusnc.com HQ: Seattle, WA, United StatesReported employees: 201-500 | Seattle, WA, United States | 201-500 | Exact match | 45 contacts → |
“Our mission is to develop and deploy nuclear-based power generating equipment that is safe, commercially competitive, and simple to use.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Master-Lee Energy Services Corporationmasterlee.com HQ: Latrobe, PA, United StatesReported employees: 201-500 | Latrobe, PA, United States | 201-500 | Exact match | 38 contacts → |
“Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Paschal Solutions, INCpaschalsolutions.com HQ: Oak Ridge, TN, United StatesReported employees: 51-200 | Oak Ridge, TN, United States | 51-200 | Exact match | 36 contacts → |
“At Paschal Solutions, we are more than engineers-we are problem solvers, innovators, and trusted partners in providing nuclear safety and specialized nuclear engineering technical…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Natura Resourcesnaturaresources.energy HQ: Abilene, TX, United StatesReported employees: Not recorded | Abilene, TX, United States | Not recorded | Exact match | 36 contacts → |
“Natura Resources is committed to answering the world's increased demand for reliable energy, medical isotopes, and clean water by developing commercially deployable molten salt…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | RBM Services, LLCrbm-services.com HQ: Oak Ridge, TN, United StatesReported employees: 11-50 | Oak Ridge, TN, United States | 11-50 | Exact match | 34 contacts → |
“RbM Services, LLC has been manufacturing nuclear medical devices in East Tennessee for more than twenty years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Wmg, INCwmginc.com HQ: Peekskill, NY, United StatesReported employees: 11-50 | Peekskill, NY, United States | 11-50 | Exact match | 33 contacts → |
“Founded in 1979 and now an EnergySolutions company, WMG, Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Lightbridge Corporationltbridge.com HQ: Reston, VA, United StatesReported employees: 11-50 | Reston, VA, United States | 11-50 | Exact match | 25 contacts → |
“Lightbridge is developing and commercializing next generation nuclear fuel technology that will significantly improve the economics and safety of existing and new reactors, with a…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tubemaster, INCtubemasterinc.com HQ: Louisville, KY, United StatesReported employees: 11-50 | Louisville, KY, United States | 11-50 | Exact match | 25 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 95 company matches
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Advanced reactor manufacturers: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
95 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 95 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for advanced reactor manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many advanced reactor manufacturers did RevenueBase find based in the United States?
The saved snapshot records 95 matching company records, 24,281 tracked contacts and 1,047 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Advanced reactor manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 advanced reactor manufacturers based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/advanced-reactor-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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