Company lists · Data refreshed September 2026
Top 25 Nuclear engineering consulting firms based in the United States
RevenueBase identified 724 company matches for nuclear engineering consulting firms associated with the United States as of September 2026 and tracks 54,152 professional contacts across them, including 13,716 with verified work emails and 18,795 with mobile numbers. Houston is the largest hub.
This list covers company matches for nuclear engineering consulting firms 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 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 engineering consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 25,068 contacts → | ||||
Exact match “Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 2 | 4,156 contacts → | ||||
Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 3 | 1,956 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 4 | 1,865 contacts → | ||||
Exact match “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 5 | 1,560 contacts → | ||||
Exact match “In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 6 | 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 5, 2026 · View company records in RevenueBase | |||||
| 7 | 526 contacts → | ||||
Exact match “Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 8 | 420 contacts → | ||||
Exact match “ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 9 | 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 5, 2026 · View company records in RevenueBase | |||||
| 10 | 353 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 11 | 313 contacts → | ||||
Exact match “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 12 | 310 contacts → | ||||
Exact match “We are A-Team of engineers specializing in the energy industry.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 13 | 279 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 14 | 245 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 · Sep 5, 2026 · View company records in RevenueBase | |||||
| 15 | 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 5, 2026 · View company records in RevenueBase | |||||
| 16 | 224 contacts → | ||||
Exact match “Boston Government Services, LLC (BGS) is an engineering, technology, and security firm providing mission-focused solutions for the clean energy, nuclear, and federal programs…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 17 | 190 contacts → | ||||
Exact match “Boswell is a leading, fully integrated, multi-disciplinary firm providing a comprehensive range of engineering and power & energy services to federal, state, county, and local…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 18 | 188 contacts → | ||||
Exact match “SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 19 | 187 contacts → | ||||
Exact match “United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 20 | 175 contacts → | ||||
Exact match “Thielsch, Inc.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 21 | 162 contacts → | ||||
Exact match “Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 22 | 157 contacts → | ||||
Exact match “PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 23 | 153 contacts → | ||||
Exact match “Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 24 | 149 contacts → | ||||
Exact match “Dunham is a full service mechanical and electrical consulting firm.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 25 | 138 contacts → | ||||
Exact match “Premier Technology, Inc.” Recorded in the RevenueBase company graph · Sep 5, 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 engineering consulting firms”. 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 724 nuclear engineering consulting firms based in the United States
See the full list, filter by size, metro and specialty, and access 13,716 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Nuclear engineering consulting firms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 engineering consulting firms” 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 13,716 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 5, 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 “nuclear engineering consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many nuclear engineering consulting firms are there based in the United States?
RevenueBase identified 724 company matches for nuclear engineering consulting firms 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?
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 engineering consulting firms?
Houston leads with 23 company records, followed by Austin (9) and Charlotte (9).
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 13,716 professional contacts with verified work emails tracked across these 724 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 724 nuclear engineering consulting firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Nuclear engineering consulting firms by geography
- Nuclear engineering consulting firms based in France
- Nuclear engineering consulting firms based in the United Kingdom
- Nuclear engineering consulting firms based in Brazil
- Nuclear engineering consulting firms based in Italy
- Nuclear engineering consulting firms based in Canada
- Nuclear engineering consulting firms based in Germany
- Nuclear engineering consulting firms based in Spain
- Nuclear engineering consulting firms based in South Africa
- Nuclear engineering consulting firms based in Sweden
- Nuclear engineering consulting firms based in Australia
- Nuclear engineering consulting firms based in Austria
- Nuclear engineering consulting firms based in Belgium
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Nuclear engineering consulting firms based in France
- Nuclear engineering consulting firms based in the United Kingdom
- Nuclear engineering consulting firms based in Brazil
- Nuclear engineering consulting firms based in Italy
- Nuclear engineering consulting firms based in Canada
- Nuclear engineering consulting firms based in Germany
Company intelligence · public preview
Top 25 nuclear engineering consulting firms 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 724 matching company records for nuclear engineering consulting firms based in the United States, with 54,152 tracked contacts and 13,716 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 5, 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 engineering consulting firms 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 | 25,068 contacts → |
“Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Sargent & Lundysargentlundy.comHQ: Chicago, WY, United StatesReported employees: 1,001-5,000 | Chicago, WY, United States | 1,001-5,000 | Exact match | 4,156 contacts → |
“Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  NAESnaes.comHQ: Issaquah, WA, United StatesReported employees: 1,001-5,000 | Issaquah, WA, United States | 1,001-5,000 | Exact match | 1,956 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Enercon Services, INCenercon.comHQ: Kennesaw, GA, United StatesReported employees: 1,001-5,000 | Kennesaw, GA, United States | 1,001-5,000 | Exact match | 1,865 contacts → |
“ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Exponentexponent.comHQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,560 contacts → |
“In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Emeryville, CA, United StatesReported employees: 501-1,000 | Emeryville, CA, United States | 501-1,000 | Exact match | 526 contacts → |
“Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Recon Management Services, INCrecon-group.comHQ: Sulphur, LA, United StatesReported employees: 501-1,000 | Sulphur, LA, United States | 501-1,000 | Exact match | 420 contacts → |
“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  MPR Associates, INCmpr.comHQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 353 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  C&i Engineeringcieng.comHQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 313 contacts → |
“Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  ARIONarionblue.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 310 contacts → |
“We are A-Team of engineers specializing in the energy industry.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Edgewater Technical Associates, LLCedgewatertech.netHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 279 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sonic Systemssonicsystems.comHQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 245 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Boston Government Services, LLC BGSbgs-llc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 224 contacts → |
“Boston Government Services, LLC (BGS) is an engineering, technology, and security firm providing mission-focused solutions for the clean energy, nuclear, and federal programs…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Boswellboswellinc.comHQ: South Hackensack, NJ, United StatesReported employees: 201-500 | South Hackensack, NJ, United States | 201-500 | Exact match | 190 contacts → |
“Boswell is a leading, fully integrated, multi-disciplinary firm providing a comprehensive range of engineering and power & energy services to federal, state, county, and local…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 188 contacts → |
“SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Mount Laurel, NJ, United StatesReported employees: 201-500 | Mount Laurel, NJ, United States | 201-500 | Exact match | 187 contacts → |
“United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Thielsch Engineeringthielsch.comHQ: Cranston, RI, United StatesReported employees: 501-1,000 | Cranston, RI, United States | 501-1,000 | Exact match | 175 contacts → |
“Thielsch, Inc.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Spectra Tech, INCspectratechinc.comHQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 162 contacts → |
“Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  PSE Engineers & Consultantspowersystem.orgHQ: Madison, WI, United StatesReported employees: 51-200 | Madison, WI, United States | 51-200 | Exact match | 157 contacts → |
“PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Grumman Butkus Associatesgrummanbutkus.comHQ: Evanston, IL, United StatesReported employees: 51-200 | Evanston, IL, United States | 51-200 | Exact match | 153 contacts → |
“Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Dunham Associates, INCdunhameng.comHQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 149 contacts → |
“Dunham is a full service mechanical and electrical consulting firm.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Premier Technology INCptius.netHQ: Blackfoot, ID, United StatesReported employees: 201-500 | Blackfoot, ID, United States | 201-500 | Exact match | 138 contacts → |
“Premier Technology, Inc.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 724 company matches
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Nuclear engineering consulting firms: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
722 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.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 5, 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 nuclear engineering consulting firms?
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 engineering consulting firms did RevenueBase find based in the United States?
The saved snapshot records 724 matching company records, 54,152 tracked contacts and 13,716 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 5, 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 engineering consulting firms by geography
- Nuclear engineering consulting firms based in France
- Nuclear engineering consulting firms based in the United Kingdom
- Nuclear engineering consulting firms based in Brazil
- Nuclear engineering consulting firms based in Italy
- Nuclear engineering consulting firms based in Canada
- Nuclear engineering consulting firms based in Germany
- Nuclear engineering consulting firms based in Spain
- Nuclear engineering consulting firms based in South Africa
- Nuclear engineering consulting firms based in Sweden
- Nuclear engineering consulting firms based in Australia
- Nuclear engineering consulting firms based in Austria
- Nuclear engineering consulting firms based in Belgium
Cite this list
RevenueBase Data Team. Top 25 nuclear engineering consulting firms based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/nuclear-engineering-consulting-firms/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
- Nuclear engineering consulting firms based in France
- Nuclear engineering consulting firms based in the United Kingdom
- Nuclear engineering consulting firms based in Brazil
- Nuclear engineering consulting firms based in Italy
- Nuclear engineering consulting firms based in Canada
- Nuclear engineering consulting firms based in Germany
Company intelligence · public preview
Top 25 nuclear engineering consulting firms based in the United States
RevenueBase records 724 matching company records for nuclear engineering consulting firms based in the United States, with 54,152 tracked contacts and 13,716 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 5, 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 engineering consulting firms 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 | 25,068 contacts → |
“Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Sargent & Lundysargentlundy.com HQ: Chicago, WY, United StatesReported employees: 1,001-5,000 | Chicago, WY, United States | 1,001-5,000 | Exact match | 4,156 contacts → |
“Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | NAESnaes.com HQ: Issaquah, WA, United StatesReported employees: 1,001-5,000 | Issaquah, WA, United States | 1,001-5,000 | Exact match | 1,956 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Enercon Services, INCenercon.com HQ: Kennesaw, GA, United StatesReported employees: 1,001-5,000 | Kennesaw, GA, United States | 1,001-5,000 | Exact match | 1,865 contacts → |
“ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Exponentexponent.com HQ: Menlo Park, CA, United StatesReported employees: 1,001-5,000 | Menlo Park, CA, United States | 1,001-5,000 | Exact match | 1,560 contacts → |
“In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: Emeryville, CA, United StatesReported employees: 501-1,000 | Emeryville, CA, United States | 501-1,000 | Exact match | 526 contacts → |
“Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Recon Management Services, INCrecon-group.com HQ: Sulphur, LA, United StatesReported employees: 501-1,000 | Sulphur, LA, United States | 501-1,000 | Exact match | 420 contacts → |
“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | MPR Associates, INCmpr.com HQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 353 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | C&i Engineeringcieng.com HQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 313 contacts → |
“Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | ARIONarionblue.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 310 contacts → |
“We are A-Team of engineers specializing in the energy industry.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Edgewater Technical Associates, LLCedgewatertech.net HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 279 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sonic Systemssonicsystems.com HQ: Wilmington, NC, United StatesReported employees: 501-1,000 | Wilmington, NC, United States | 501-1,000 | Exact match | 245 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 · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Boston Government Services, LLC BGSbgs-llc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 224 contacts → |
“Boston Government Services, LLC (BGS) is an engineering, technology, and security firm providing mission-focused solutions for the clean energy, nuclear, and federal programs…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Boswellboswellinc.com HQ: South Hackensack, NJ, United StatesReported employees: 201-500 | South Hackensack, NJ, United States | 201-500 | Exact match | 190 contacts → |
“Boswell is a leading, fully integrated, multi-disciplinary firm providing a comprehensive range of engineering and power & energy services to federal, state, county, and local…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 188 contacts → |
“SMSI is a small business providing management and technical/engineering services to the DOE/NNSA, national laboratories, and industrial clients.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Mount Laurel, NJ, United StatesReported employees: 201-500 | Mount Laurel, NJ, United States | 201-500 | Exact match | 187 contacts → |
“United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Thielsch Engineeringthielsch.com HQ: Cranston, RI, United StatesReported employees: 501-1,000 | Cranston, RI, United States | 501-1,000 | Exact match | 175 contacts → |
“Thielsch, Inc.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Spectra Tech, INCspectratechinc.com HQ: Oak Ridge, TN, United StatesReported employees: 201-500 | Oak Ridge, TN, United States | 201-500 | Exact match | 162 contacts → |
“Spectra Tech is an engineering, environmental, and nuclear services company that focuses on providing high quality and cost-effective technical solutions for our Federal…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | PSE Engineers & Consultantspowersystem.org HQ: Madison, WI, United StatesReported employees: 51-200 | Madison, WI, United States | 51-200 | Exact match | 157 contacts → |
“PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Grumman Butkus Associatesgrummanbutkus.com HQ: Evanston, IL, United StatesReported employees: 51-200 | Evanston, IL, United States | 51-200 | Exact match | 153 contacts → |
“Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Dunham Associates, INCdunhameng.com HQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 149 contacts → |
“Dunham is a full service mechanical and electrical consulting firm.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Premier Technology INCptius.net HQ: Blackfoot, ID, United StatesReported employees: 201-500 | Blackfoot, ID, United States | 201-500 | Exact match | 138 contacts → |
“Premier Technology, Inc.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 724 company matches
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Nuclear engineering consulting firms: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
722 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.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 5, 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 nuclear engineering consulting firms?
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 engineering consulting firms did RevenueBase find based in the United States?
The saved snapshot records 724 matching company records, 54,152 tracked contacts and 13,716 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 5, 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 engineering consulting firms by geography
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Cite this list
RevenueBase Data Team. Top 25 nuclear engineering consulting firms based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/nuclear-engineering-consulting-firms/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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- Nuclear engineering consulting firms based in France
- Nuclear engineering consulting firms based in the United Kingdom
- Nuclear engineering consulting firms based in Brazil
- Nuclear engineering consulting firms based in Italy
- Nuclear engineering consulting firms based in Canada
- Nuclear engineering consulting firms based in Germany