Company lists · Data refreshed September 2026
Top 25 Nuclear waste management software companies based in the United States
RevenueBase identified 109 nuclear waste management software companies headquartered in the United States as of September 2026 and tracks 19,683 professional contacts across them, including 1,056 with verified work emails and 7,278 with mobile numbers. Oak Ridge is the largest hub.
This list covers nuclear waste management software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 waste management software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | Westinghouse Electric CompanyPartial evidence | 10,898 | |||
“Westinghouse Electric Company is the world's leading supplier of safe and innovative nuclear technology.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,832 | ||||
“At BWX Technologies, Inc.(NYSE: BWXT), we are People Strong, Innovation Driven.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,254 | ||||
“EnergySolutions is an international nuclear services company headquartered in Salt Lake City, Utah, and Charlotte, North Carolina, with operations across the United States and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 404 | ||||
“GSE Solutions supports nuclear power and clean-energy fleets worldwide through integrated engineering services and software that strengthen operational performance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Perma-Fix Environmental Services, INCIndirect evidence | 233 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | Oklo INCStrong evidence | 226 | |||
“Oklo's mission is to provide clean, reliable, affordable energy through the deployment of next-generation fast fission technology and recycling nuclear waste.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Spectra Tech, INCPartial evidence | 162 | |||
“Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Waste Control SpecialistsPartial evidence | 138 | |||
“WCS offers a comprehensive solution for the treatment, storage and disposal of Class A, B and C low-level radioactive waste, hazardous waste and byproduct materials.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | HI Tech SolutionsPartial evidence | 129 | |||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | LATAPartial evidence | 120 | |||
“Founded in New Mexico in 1975, Los Alamos Technical Associates provides technical and project management services to a varied clientèle including federal agencies, state…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | NAC InternationalStrong evidence | 116 | |||
“NAC International Inc.(NAC) is an industry-leading provider of engineering, consulting, and nuclear fuel management solutions for nuclear facility operators, fuel cycle companies…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | GCR INCStrong evidence | 101 | |||
“Nuclear and Power Generation and Water Solution data management systems backed by a team of industry experts.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | NFT INCIndirect evidence | 76 | |||
“NFT, founded in 1984 and headquartered in Golden Colorado along with EPD located in Carlsbad New Mexico, is an industry leader dedicated to the manufacturing of highly engineered…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | HII Technical Solutions Nuclear & Environmental GroupPartial evidence | 54 | |||
“The Nuclear & Environmental Group, part of Huntington Ingalls Industries' Technical Solutions division, manages environmental issues and is an industry leader in providing the DOE…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Nano Nuclear Energy Inc. Nasdaq NNEPartial evidence | 50 | |||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | Master-Lee Energy Services CorporationPartial evidence | 38 | |||
“Established in 1987, Master-Lee Energy Services was founded to provide the commercial Nuclear Power Industry with engineering, reactor services, decontamination, Reactor Coolant…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Wastelinq, INCPartial evidence | 34 | |||
“WasteLinq provides innovative technology solutions that are designed and tested by waste industry experts to waste industry customers and service providers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Wmg, INCIndirect evidence | 33 | |||
“Founded in 1979 and now an EnergySolutions company, WMG, Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | Studsvik ScandpowerStrong evidence | 32 | |||
“Studsvik Scandpower Group is a subsidiary of Studsvik AB (STO:SVIK), and specializes in nuclear engineering simulation software that enables nuclear engineers to design nuclear…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Lightbridge CorporationPartial evidence | 25 | |||
“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…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Park NuclearStrong evidence | 24 | |||
“Park Nuclear stands at the forefront of the Nuclear Power Industry, specializing in providing top-tier solutions for obsolescence management, strategic sourcing of hard-to-find…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 | ||||
“At Eichrom Technologies, we help our customers in nuclear industries to change the way they think.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | NuclearnPartial evidence | 23 | |||
“With over 60 reactors around the world relying on our technology, Nuclearn is built on one simple idea: nuclear deserves better tools.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | NAC Philotechnics, LTDIndirect evidence | 21 | |||
“NAC Philotechnics, Ltd, is a full-scope radiological services company co-located in Oak Ridge, Tennessee and San Diego.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 | ||||
“AGI Engineering is a leader in nuclear and hazardous waste remediation with in-house solutions designed, engineered, manufactured and tested for specialized tank cleanup.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 109 nuclear waste management software companies based in the United States
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Nuclear waste management software companies based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nuclear waste management software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in the United States whose own description of what they do matches “nuclear waste management software companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among nuclear waste management software companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,056 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many nuclear waste management software companies are there based in the United States?
RevenueBase identified 109 nuclear waste management software companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Westinghouse Electric Company, headquartered in Cranberry Township, tops this list with the largest team on record.
Which city has the most nuclear waste management software companies?
Oak Ridge leads with 6 headquartered companies, followed by Richland (4) and Golden (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,056 verified decision-maker contacts tracked across these 109 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
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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.
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