Company lists · Data refreshed October 2026
Top 25 Nuclear services based in the United States
RevenueBase identified 645 company matches for nuclear services associated with the United States as of October 2026 and tracks 90,976 professional contacts across them, including 16,014 with verified work emails. Oak Ridge is the largest hub.
This list covers company matches for nuclear services 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 October 28, 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 nuclear services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 28,458 contacts → | ||||
Exact match “Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 2 | 11,520 contacts → | ||||
Exact match “Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 3 | 9,888 contacts → | ||||
Exact match “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 4 | 3,987 contacts → | ||||
Exact match “At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 5 | 2,112 contacts → | ||||
Exact match “Curium is the global leader in nuclear medicine, providing life-changing diagnostics and treatment to patients all over the world.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 6 | 1,999 contacts → | ||||
Exact match “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 7 | 1,273 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 · Oct 28, 2026 · View company records in RevenueBase | |||||
| 8 | 1,202 contacts → | ||||
Exact match “X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 9 | 1,003 contacts → | ||||
Exact match “Mirion (NYSE: MIR) is a global leader in radiation safety, science and medicine, with a diverse portfolio of products and services that protects people and the planet from the…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 10 | 983 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 · Oct 28, 2026 · View company records in RevenueBase | |||||
| 11 | 782 contacts → | ||||
Exact match “Professional Case Management (PCM) is the nation’s premier homecare provider for nuclear weapons and uranium workers.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 12 | 771 contacts → | ||||
Exact match “Centrus Energy is a trusted American supplier of nuclear fuel and services for the nuclear power industry, helping meet the growing need for clean, affordable, carbon-free energy.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 13 | 467 contacts → | ||||
Exact match “Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 14 | 441 contacts → | ||||
Exact match “Allied Power is dedicated to delivering best-in-class maintenance, modifications, and project services.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 15 | 439 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 · Oct 28, 2026 · View company records in RevenueBase | |||||
| 16 | 399 contacts → | ||||
Exact match “Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 17 | 373 contacts → | ||||
Exact match “In 1964, a trio of visionary engineers, from Admiral Rickover's Naval nuclear propulsion program, set out to form a company built around technical excellence.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 18 | 350 contacts → | ||||
Exact match “Headquartered in Janesville, Wisconsin, SHINE is an industry leader in next-generation fusion, developing innovative fusion-based technology that combines safety, cost-efficiency…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 19 | 329 contacts → | ||||
Exact match “Oklo's mission is to provide clean, reliable, affordable energy through the deployment of next-generation fast fission technology and recycling nuclear waste.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 20 | 321 contacts → | ||||
Exact match “NorthStar is a commercial-stage radiopharmaceutical company at the forefront of advancing patient care by utilizing novel technologies to produce commercial-scale radioisotopes…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 21 | 301 contacts → | ||||
Exact match “Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 22 | 290 contacts → | ||||
Exact match “NEI is the leading U.S.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 23 | 249 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 · Oct 28, 2026 · View company records in RevenueBase | |||||
| 24 | 246 contacts → | ||||
Exact match “Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase | |||||
| 25 | 246 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 28, 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 “nuclear services”. 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 645 nuclear services based in the United States
See the full list, filter by size, metro and specialty, and access 16,014 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Nuclear services based in the United States at a glance
As of Oct 28, 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 645 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 “nuclear services” 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 16,014 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 October 28, 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.
Nuclear services by metro
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 “nuclear services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many nuclear services are there based in the United States?
RevenueBase identified 645 company matches for nuclear services associated with the United States as of October 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?
Bechtel Corporation tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most nuclear services?
Oak Ridge leads with 25 company records, followed by Washington (15) and Idaho Falls (13).
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 16,014 professional contacts with verified work emails tracked across these 645 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 October 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 645 nuclear services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Nuclear services by geography
- Nuclear services based in London, United Kingdom
- Nuclear services based in Oak Ridge, United States
- Nuclear services based in Brazil
- Nuclear services based in Canada
- Nuclear services based in France
- Nuclear services based in Germany
- Nuclear services based in India
- Nuclear services based in Italy
- Nuclear services based in the Netherlands
- Nuclear services based in Spain
- Nuclear services based in Sweden
- Nuclear services based in Türkiye
Browse the directory
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
Company intelligence · public preview
Top 25 nuclear services 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 645 matching company records for nuclear services based in the United States, with 90,976 tracked contacts and 16,014 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: October 28, 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 nuclear services 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 |  Bechtel Corporationbechtel.comHQ: Reston, VA, United StatesReported employees: 10001+ | Reston, VA, United States | 10001+ | Exact match | 28,458 contacts → |
“Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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 | 11,520 contacts → |
“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Constellationconstellationenergy.comHQ: Baltimore, MD, United StatesReported employees: 10001+ | Baltimore, MD, United States | 10001+ | Exact match | 9,888 contacts → |
“Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  BWXTbwxt.comHQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,987 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Curium Pharmacuriumpharma.comHQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“Curium is the global leader in nuclear medicine, providing life-changing diagnostics and treatment to patients all over the world.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  NAESnaes.comHQ: Issaquah, WA, United StatesReported employees: 1,001-5,000 | Issaquah, WA, United States | 1,001-5,000 | Exact match | 1,999 contacts → |
“NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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 | 1,273 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 · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  X-Energyx-energy.comHQ: Rockville, MD, United StatesReported employees: 501-1,000 | Rockville, MD, United States | 501-1,000 | Exact match | 1,202 contacts → |
“X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Mirionmirion.comHQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 1,003 contacts → |
“Mirion (NYSE: MIR) is a global leader in radiation safety, science and medicine, with a diverse portfolio of products and services that protects people and the planet from the…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Terrapowerterrapower.comHQ: Bellevue, WA, United StatesReported employees: 501-1,000 | Bellevue, WA, United States | 501-1,000 | Exact match | 983 contacts → |
“TerraPower is a leading nuclear innovation company that strives to improve the world through nuclear energy and science.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Professional Case Managementprocasemanagement.com HQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 782 contacts → |
“Professional Case Management (PCM) is the nation’s premier homecare provider for nuclear weapons and uranium workers.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Centrus Energy Corpcentrusenergy.comHQ: Bethesda, MD, United StatesReported employees: 201-500 | Bethesda, MD, United States | 201-500 | Exact match | 771 contacts → |
“Centrus Energy is a trusted American supplier of nuclear fuel and services for the nuclear power industry, helping meet the growing need for clean, affordable, carbon-free energy.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Navarro Research And Engineeringnavarro-inc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 467 contacts → |
“Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Allied Poweralliedpwr.comHQ: Baton Rouge, LA, United StatesReported employees: 5,001-10,000 | Baton Rouge, LA, United States | 5,001-10,000 | Exact match | 441 contacts → |
“Allied Power is dedicated to delivering best-in-class maintenance, modifications, and project services.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  GSE Solutionsgses.comHQ: Columbia, MD, United StatesReported employees: 201-500 | Columbia, MD, United States | 201-500 | Exact match | 439 contacts → |
“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  RSIrsienv.comHQ: Oak Ridge, TN, United StatesReported employees: 501-1,000 | Oak Ridge, TN, United States | 501-1,000 | Exact match | 399 contacts → |
“Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  MPR Associates, INCmpr.comHQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 373 contacts → |
“In 1964, a trio of visionary engineers, from Admiral Rickover's Naval nuclear propulsion program, set out to form a company built around technical excellence.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Shine Technologiesshinefusion.com HQ: Janesville, WI, United StatesReported employees: 201-500 | Janesville, WI, United States | 201-500 | Exact match | 350 contacts → |
“Headquartered in Janesville, Wisconsin, SHINE is an industry leader in next-generation fusion, developing innovative fusion-based technology that combines safety, cost-efficiency…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Oklo INCoklo.comHQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 329 contacts → |
“Oklo's mission is to provide clean, reliable, affordable energy through the deployment of next-generation fast fission technology and recycling nuclear waste.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Northstar Medical Technologiesnorthstarnm.comHQ: Beloit, WI, United StatesReported employees: 201-500 | Beloit, WI, United States | 201-500 | Exact match | 321 contacts → |
“NorthStar is a commercial-stage radiopharmaceutical company at the forefront of advancing patient care by utilizing novel technologies to produce commercial-scale radioisotopes…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Edgewater Technical Associates, LLCedgewatertech.netHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 301 contacts → |
“Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Nuclear Energy Institutenei.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 290 contacts → |
“NEI is the leading U.S.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Paragon Energy Solutionsparagones.comHQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 249 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 · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Sonic Systemssonicsystems.comHQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 246 contacts → |
“Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Perma-Fix Environmental Services, INCperma-fix.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 246 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 645 company matches
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Nuclear services: dataset insights
October 28, 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
643 records in the displayed employee bands.
2 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 645 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: October 28, 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 ↗
Nuclear services by metro
Questions about this company list
What does Exact match mean for nuclear services?
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 nuclear services did RevenueBase find based in the United States?
The saved snapshot records 645 matching company records, 90,976 tracked contacts and 16,014 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: October 28, 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
Nuclear services by geography
- Nuclear services based in London, United Kingdom
- Nuclear services based in Oak Ridge, United States
- Nuclear services based in Brazil
- Nuclear services based in Canada
- Nuclear services based in France
- Nuclear services based in Germany
- Nuclear services based in India
- Nuclear services based in Italy
- Nuclear services based in the Netherlands
- Nuclear services based in Spain
- Nuclear services based in Sweden
- Nuclear services based in Türkiye
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 nuclear services based in the United States. Snapshot: October 28, 2026. https://revenuebase.ai/companies/nuclear-services/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
Company intelligence · public preview
Top 25 nuclear services based in the United States
RevenueBase records 645 matching company records for nuclear services based in the United States, with 90,976 tracked contacts and 16,014 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: October 28, 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 nuclear services 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 | Bechtel Corporationbechtel.com HQ: Reston, VA, United StatesReported employees: 10001+ | Reston, VA, United States | 10001+ | Exact match | 28,458 contacts → |
“Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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 | 11,520 contacts → |
“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Constellationconstellationenergy.com HQ: Baltimore, MD, United StatesReported employees: 10001+ | Baltimore, MD, United States | 10001+ | Exact match | 9,888 contacts → |
“Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | BWXTbwxt.com HQ: Lynchburg, VA, United StatesReported employees: 5,001-10,000 | Lynchburg, VA, United States | 5,001-10,000 | Exact match | 3,987 contacts → |
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Curium Pharmacuriumpharma.com HQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,112 contacts → |
“Curium is the global leader in nuclear medicine, providing life-changing diagnostics and treatment to patients all over the world.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | NAESnaes.com HQ: Issaquah, WA, United StatesReported employees: 1,001-5,000 | Issaquah, WA, United States | 1,001-5,000 | Exact match | 1,999 contacts → |
“NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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 | 1,273 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 · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | X-Energyx-energy.com HQ: Rockville, MD, United StatesReported employees: 501-1,000 | Rockville, MD, United States | 501-1,000 | Exact match | 1,202 contacts → |
“X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Mirionmirion.com HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 1,003 contacts → |
“Mirion (NYSE: MIR) is a global leader in radiation safety, science and medicine, with a diverse portfolio of products and services that protects people and the planet from the…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Terrapowerterrapower.com HQ: Bellevue, WA, United StatesReported employees: 501-1,000 | Bellevue, WA, United States | 501-1,000 | Exact match | 983 contacts → |
“TerraPower is a leading nuclear innovation company that strives to improve the world through nuclear energy and science.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Professional Case Managementprocasemanagement.com HQ: Denver, CO, United StatesReported employees: 1,001-5,000 | Denver, CO, United States | 1,001-5,000 | Exact match | 782 contacts → |
“Professional Case Management (PCM) is the nation’s premier homecare provider for nuclear weapons and uranium workers.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Centrus Energy Corpcentrusenergy.com HQ: Bethesda, MD, United StatesReported employees: 201-500 | Bethesda, MD, United States | 201-500 | Exact match | 771 contacts → |
“Centrus Energy is a trusted American supplier of nuclear fuel and services for the nuclear power industry, helping meet the growing need for clean, affordable, carbon-free energy.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Navarro Research And Engineeringnavarro-inc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 467 contacts → |
“Navarro Research & Engineering is an award-winning federal contractor dedicated to partnering with our clients to overcome their most challenging environmental, technical, and…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Allied Poweralliedpwr.com HQ: Baton Rouge, LA, United StatesReported employees: 5,001-10,000 | Baton Rouge, LA, United States | 5,001-10,000 | Exact match | 441 contacts → |
“Allied Power is dedicated to delivering best-in-class maintenance, modifications, and project services.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | GSE Solutionsgses.com HQ: Columbia, MD, United StatesReported employees: 201-500 | Columbia, MD, United States | 201-500 | Exact match | 439 contacts → |
“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | RSIrsienv.com HQ: Oak Ridge, TN, United StatesReported employees: 501-1,000 | Oak Ridge, TN, United States | 501-1,000 | Exact match | 399 contacts → |
“Representing the AIS Environmental and Nuclear business line, RSI is dedicated to advancing the missions of our clients in the environmental, nuclear, energy, construction, and…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | MPR Associates, INCmpr.com HQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 373 contacts → |
“In 1964, a trio of visionary engineers, from Admiral Rickover's Naval nuclear propulsion program, set out to form a company built around technical excellence.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Shine Technologiesshinefusion.com HQ: Janesville, WI, United StatesReported employees: 201-500 | Janesville, WI, United States | 201-500 | Exact match | 350 contacts → |
“Headquartered in Janesville, Wisconsin, SHINE is an industry leader in next-generation fusion, developing innovative fusion-based technology that combines safety, cost-efficiency…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Oklo INCoklo.com HQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 329 contacts → |
“Oklo's mission is to provide clean, reliable, affordable energy through the deployment of next-generation fast fission technology and recycling nuclear waste.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Northstar Medical Technologiesnorthstarnm.com HQ: Beloit, WI, United StatesReported employees: 201-500 | Beloit, WI, United States | 201-500 | Exact match | 321 contacts → |
“NorthStar is a commercial-stage radiopharmaceutical company at the forefront of advancing patient care by utilizing novel technologies to produce commercial-scale radioisotopes…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Edgewater Technical Associates, LLCedgewatertech.net HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 301 contacts → |
“Founded in 2003, Edgewater Technical Associates, LLC (Edgewater) is a New Mexico-based small business headquartered in Los Alamos, NM, with a national footprint supporting complex…” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Nuclear Energy Institutenei.org HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 290 contacts → |
“NEI is the leading U.S.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Paragon Energy Solutionsparagones.com HQ: Fort Worth, TX, United StatesReported employees: 201-500 | Fort Worth, TX, United States | 201-500 | Exact match | 249 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 · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Sonic Systemssonicsystems.com HQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 246 contacts → |
“Founded in 1977 Sonic Systems International (SSI) is a full-service quality-consulting firm serving the nuclear power generation utility industry.” Recorded description excerpt · October 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Perma-Fix Environmental Services, INCperma-fix.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 246 contacts → |
No recorded description excerpt is available for this public record. | |||||
Showing 25 of 645 company matches
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Nuclear services: dataset insights
October 28, 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
643 records in the displayed employee bands.
2 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 645 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: October 28, 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 ↗
Nuclear services by metro
Questions about this company list
What does Exact match mean for nuclear services?
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 nuclear services did RevenueBase find based in the United States?
The saved snapshot records 645 matching company records, 90,976 tracked contacts and 16,014 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: October 28, 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
Nuclear services by geography
- Nuclear services based in London, United Kingdom
- Nuclear services based in Oak Ridge, United States
- Nuclear services based in Brazil
- Nuclear services based in Canada
- Nuclear services based in France
- Nuclear services based in Germany
- Nuclear services based in India
- Nuclear services based in Italy
- Nuclear services based in the Netherlands
- Nuclear services based in Spain
- Nuclear services based in Sweden
- Nuclear services based in Türkiye
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 nuclear services based in the United States. Snapshot: October 28, 2026. https://revenuebase.ai/companies/nuclear-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗