Top DOE other scientific and technical consulting services contractors
In the 12 months ending Oct 5, 2026, the Department of Energy obligated $72.8M in net prime contract dollars under NAICS 541690, down 6.0% from $77.4M in the preceding 12 months. 23 prime contractors received positive obligations, and 3 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Energy. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DOE contractors for NAICS 541690
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Unwin Co | $42.5M | $31.0M | 56.4% | — |
| 2 | Deck Prism LLC | $17.1M | $5.8M | 22.7% | ▲ 3 |
| 3 | TKC Global Solutions, LLC | $6.8M | $6.4M | 9.0% | ▲ 1 |
| 4 | Banda Group International LLC | $1.5M | $1.9M | 2.0% | ▲ 3 |
| 5 | National Academy of Sciences | $1.5M | −$2.9M | 1.9% | New |
| 6 | Electric Power Research Institute Inc | $1.4M | $382K | 1.8% | ▲ 5 |
| 7 | Giant Oak, Inc. | $1.3M | $1.4M | 1.8% | ▲ 1 |
| 8 | Utilicast LLC | $605K | $0 | 0.8% | New |
| 9 | Enthalpion Energy LLC | $598K | $0 | 0.8% | New |
| 10 | Traynor Technical Project Services LLC | $360K | $382K | 0.5% | ▲ 2 |
| 11 | Performance Edge, LLC | $289K | $577K | 0.4% | ▼ 2 |
| 12 | Washington State University | $257K | $2.0M | 0.3% | ▼ 6 |
| 13 | Oxford Economics USA, Inc. | $225K | $215K | 0.3% | — |
| 14 | Select Security Consulting, LLC | $208K | $0 | 0.3% | New |
| 15 | Arrowhead Economics LLC | $175K | $0 | 0.2% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Unwin Co$31.0M → $42.5M (+$11.4M) · now #1
- Deck Prism LLC$5.8M → $17.1M (+$11.3M) · now #2
- National Academy of Sciences−$2.9M → $1.5M (+$4.4M) · now #5
Largest declines
- Dependable Global Solutions, LLC$24.1M → −$1.6M (−$25.7M) · no latest-period obligations
- Global Engineering & Technology Inc$7.6M → −$324K (−$7.9M) · no latest-period obligations
- Washington State University$2.0M → $257K (−$1.7M) · now #12
New to this market
4 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Enthalpion Energy LLC | Sep 17, 2026 | $598K |
| Select Security Consulting, LLC | Jan 21, 2026 | $208K |
| Bennett-Alvarado, Inc. | Jul 15, 2026 | $21K |
| UXC LLC | Jul 28, 2026 | $12K |
Where the money comes from
Funding sub-agencies within the Department of Energy, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Department of Energy | $71.5M | $76.1M | Down $4.6M (6.1%) |
| Federal Energy Regulatory Commission | $1.3M | $1.4M | Down $10K (0.7%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 89243121CSC000092 | Wyandotte Technologies TECHNICAL SERVICES SUPPORT | $1.8M | Oct 31, 2026 |
| 89503224PWA000485 | Utilicast LLC SOUTHWEST POWER POOL (SPP) REGIONAL TRANSMISSION ORGANIZATION (RTO) SOFTWARE CONSULTING SERVICES | $3.0M | Dec 30, 2026 |
| 89233124CNA000329 | TKC Global Solutions, LLC PERSONNEL SECURITY & FACILITY CLEARANCES SUPPORT SERVICES FOR DOE/NATIONAL NUCLEAR SECURITY ADMINISTRATION, OFFICE OF PERSONNEL & FACILITY CLEARANCES AND CLASSIFICATION (OPFCC -… | $19.0M | Jan 1, 2027 |
| 89303024CET000021 | Deck Prism LLC VULNERABILITY ASSESSMENT SERVICES | $4.3M | Jan 1, 2027 |
| 89233124FNA400571 | National Academy of Sciences THE NATIONAL ACADEMY OF SCIENCES (NAS) AND THE RUSSIAN ACADEMY OF SCIENCES (RAS) EACH FORMED A COMMITTEE ON INTERNATIONAL SECURITY AND ARMS CONTROL (CISAC) IN 1980 TO CONDUCT A… | $1.6M | Jan 26, 2027 |
| 89303026FET400040 | Deck Prism LLC TASK ORDER #2: TECHNICAL SUPPORT | $16.1M | Jan 31, 2027 |
| 89303026CEA000006 | Unwin Co THE CONTRACTOR SHALL PROVIDE TECHNICAL AND ADMINISTRATIVE SUPPORT TO THE OFFICE OF ENTERPRISE ASSESSMENT IN SUPPORT OF ITS MISSION TO PROVIDE THE SECRETARY OF ENERGY AND SENIOR… | $37.4M | Feb 28, 2027 |
| 89603022C0001 | Giant Oak, Inc. COMPLETION OF DEVELOPMENT OF ATHENA FOR FERC. | $5.2M | Mar 27, 2027 |
| 89303925CEM000059 | Washington State University AWARD TO WASHINGTON STATE UNIVERSITY TO COMPLETE THE STATEMENT OF WORK. | $2.3M | Sep 30, 2027 |
| 89233124CNA000337 | Banda Group International LLC THE NUCLEAR EXPLOSIVE SAFETY CONTRACT IS ESTABLISHED TO MAINTAIN AND ENHANCE THE SAFETY, SECURITY AND RELIABILITY OF THE U.S. NUCLEAR WEAPONS STOCKPILE. TO PROVIDE A MEANS TO… | $4.7M | Jan 15, 2028 |
Common questions
Who are the top DOE contractors for NAICS 541690?
In the latest 12 months, Unwin Co ($42.5M), Deck Prism LLC ($17.1M), TKC Global Solutions, LLC ($6.8M) received the most DOE obligations for other scientific and technical consulting services.
How concentrated is this market?
The eight largest primes held 96.5% of positive obligations, and Unwin Co alone held 56.4%. 4 contractors won their first obligations in this market during the latest 12 months.
Are any large DOE NAICS 541690 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is 89243121CSC000092 (Wyandotte Technologies, $1.8M obligated), ending Oct 31, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$22.2MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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