Top Interior power and communication line and related structures construction contractors
In the 12 months ending Oct 5, 2026, the Department of the Interior obligated $75.4M in net prime contract dollars under NAICS 237130, up 314.4% from $18.2M in the preceding 12 months. 20 prime contractors received positive obligations, and 1 of them accounted for 80% of that spend.
Prime contracts funded by the Department of the Interior. 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 Interior contractors for NAICS 237130
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 | Olsson Industrial Electric, Inc | $68.7M | $0 | 90.8% | New |
| 2 | Michels Construction, Inc. | $5.0M | $11.2M | 6.6% | ▼ 1 |
| 3 | Diamond N II LLC | $497K | $0 | 0.7% | New |
| 4 | Wilson Construction Co. | $278K | $101K | 0.4% | ▲ 5 |
| 5 | Flake Legacy, LLC | $242K | $0 | 0.3% | New |
| 6 | Texas Cellnet, Inc. | $239K | $0 | 0.3% | New |
| 7 | Mansa LLP | $152K | $0 | 0.2% | New |
| 8 | Gardner Zemke Co | $136K | $727K | 0.2% | ▼ 4 |
| 9 | TDX Power Services LLC | $114K | $839K | 0.1% | ▼ 6 |
| 10 | Pioneer Energy Products, LLC | $80K | $0 | 0.1% | New |
| 11 | American Tower Corporation | $54K | $52K | 0.1% | ▲ 3 |
| 12 | Mountain Power Solutions LLC | $48K | $0 | 0.1% | New |
| 13 | Cresco Consult LLC | $47K | $0 | 0.1% | New |
| 14 | Bixby Electric, Inc | $30K | $0 | 0.0% | New |
| 15 | Fireside Security Group Inc | $28K | $0 | 0.0% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Olsson Industrial Electric, Inc$0 → $68.7M (+$68.7M) · now #1
- Diamond N II LLC$0 → $497K (+$497K) · now #3
- Flake Legacy, LLC$0 → $242K (+$242K) · now #5
Largest declines
- Michels Construction, Inc.$11.2M → $5.0M (−$6.2M) · now #2
- Palouse Power LLC$3.6M → $0 (−$3.6M) · no latest-period obligations
- TDX Power Services LLC$839K → $114K (−$725K) · now #9
New to this market
13 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Olsson Industrial Electric, Inc | May 1, 2026 | $68.7M |
| Diamond N II LLC | Jun 5, 2026 | $497K |
| Flake Legacy, LLC | Aug 5, 2026 | $242K |
| Texas Cellnet, Inc. | Sep 15, 2026 | $239K |
| Mansa LLP | Sep 2, 2026 | $152K |
| Pioneer Energy Products, LLC | May 29, 2026 | $80K |
| Mountain Power Solutions LLC | Sep 9, 2026 | $48K |
| Cresco Consult LLC | May 4, 2026 | $47K |
Where the money comes from
Funding sub-agencies within the Department of the Interior, 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 |
|---|---|---|---|
| Bureau of Reclamation | $68.9M | $4.4M | Up $64.4M (1452.9%) |
| National Park Service | $6.2M | $12.8M | Down $6.6M (51.4%) |
| Bureau of Indian Affairs and Bureau of Indian Education | $308K | $97K | Up $211K (218.1%) |
| Bureau of Land Management | $23K | $677K | Down $655K (96.6%) |
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 |
|---|---|---|---|
| INR15PC00081 | Yellowstone Electric Co REPLACE MAIN S.U. TRANSFORMERS&ISO PHASE BUS | $1.1M | Dec 31, 2026 |
| 140R3024C0008 | Gardner Zemke Co HOOVER DAM POWERPLANT STATION SERVICE REPLACEMENT BOULDER CANYON PROJECT, ARIZONA, NEVADA | $9.8M | Apr 1, 2027 |
| 140P2023C0070 | TDX Power Services LLC REHABILITATE UNSAFE AND FAILING ELECTRICAL SYSTEM FOR SETTLEMENT, KALAUPAPA NATIONAL HISTORICAL PARK, KALA-217676 | $16.5M | Jul 30, 2027 |
| 140P2025C0068 | Michels Construction, Inc. VOYA 306890 - KETTLE FALLS POR DESIGN BU | $16.1M | Oct 31, 2027 |
Common questions
Who are the top Interior contractors for NAICS 237130?
In the latest 12 months, Olsson Industrial Electric, Inc ($68.7M), Michels Construction, Inc. ($5.0M), Diamond N II LLC ($497K) received the most Interior obligations for power and communication line and related structures construction.
How concentrated is this market?
The eight largest primes held 99.4% of positive obligations, and Olsson Industrial Electric, Inc alone held 90.8%. 13 contractors won their first obligations in this market during the latest 12 months.
Are any large Interior NAICS 237130 contracts ending soon?
4 of the largest awards in this market reach their current end date in the next 18 months. The first is INR15PC00081 (Yellowstone Electric Co, $1.1M obligated), ending Dec 31, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 237130 across all agencies
DoD · NAICS 237130
$475.5MDOT · NAICS 237130
$118.9MDOE · NAICS 237130
$10.5MDOJ · NAICS 237130
$9.4MDHS · NAICS 237130
$6.7MFigures 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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