Federal contractor · ROCKLEDGE, FL

MAINSTREAM ENGINEERING CORP

MAINSTREAM ENGINEERING CORP received $19.1M in federal contract obligations in FY2026, on 41 awards (−24% vs FY2025). Since FY2017: $145.8M. Its largest customer was Federal Acquisition Service ($14.3M). It also received $1.2M in federal grants and other assistance in FY2026.

Obligations · FY2026
$19.1M
New awards
41
Sole-source
7.9%
Single offer
3.6%
UEI
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Small business
Open in the contracts explorerRelationship graph

Spending by fiscal year

Obligations per federal fiscal year (October–September).

  1. 9MFY2017
  2. 12.5MFY2018
  3. 11.7MFY2019
  4. 17.9MFY2020
  5. 6.9MFY2021
  6. 11.3MFY2022
  7. 11.9MFY2023
  8. 20.5MFY2024
  9. 25.1MFY2025
  10. 19.1MFY2026

Top buying agencies

Obligations in FY2026.

  1. Federal Acquisition Service$14.3M75%
    2 awards
  2. Department of the Navy$4M21%
    11 awards
  3. Defense Logistics Agency$403.2K2.1%
    16 awards
  4. Department of the Army$250K1.3%
    2 awards
  5. Department of the Air Force$139.9K0.7%
    4 awards
  6. Defense Microelectronics Activity$00.0%
    1 awards
  7. National Aeronautics and Space Administration$00.0%
    2 awards
  8. Missile Defense Agency$00.0%
    3 awards

What was bought · Where the work was performed

Obligations in FY2026.

What was bought

  1. Other equipment & supplies$14.6M76%
  2. Research & development$4.4M23%
  3. Weapons, aircraft, ships & vehicles$90.1K0.5%

Where the work was performed

  1. Houston County, GA$14.3M75%
  2. Brevard County, FL$3.1M16%
  3. Prince William County, VA$1.5M7.9%
  4. Arlington County, VA$99.9K0.5%
  5. Hillsborough County, NH$99.7K0.5%

Integrity signals

Shares of the year's obligations, next to the country's.

  • Low competition11%
    US 39% · $2.2M
  • Sole-source awards7.9%
    US 30% · $1.5M
  • Single-offer competitions3.6%
    US 8.8% · $680.5K
  • Urgency justifications0.0%
    US 5.1% · $0

A signal is a reason to look closer, not evidence of wrongdoing: most sole-source awards are lawful and justified.

Agencies awarding it sole-source contracts

  1. Department of the Navy$1.5M
    Department of Defense · 1 awards

Largest awards

  1. BPA CALL ORDER EECU MAINSPARES KITS$10.2M
    Federal Acquisition Service· Houston County, GA· Other equipment & supplies· Jun 11, 2026 – Jun 11, 2026· 47QSWC26F0105
  2. BPA CALL ORDER EECU MAINSPARES$4.1M
    Federal Acquisition Service· Houston County, GA· Other equipment & supplies· Jan 26, 2026 – Jan 26, 2026· 47QSWC26F0026
  3. EO14042: RESEARCH AND DEVELOPMENT$3.3M
    Department of the Navy· Brevard County, FL· Research & development· Oct 27, 2021 – Mar 6, 2026· N6833522C0062
  4. SBIR/STTR PHASE II R&D: THERMAL MANAGEMENT SYSTEM FOR COOLED WINDOW$3.1M
    Missile Defense Agency· Brevard County, FL· Research & development· Sep 23, 2022 – Apr 13, 2026· HQ086022C7150
  5. SBIR/STTR PHASE II R&D: ADDITIVELY MANUFACTURED INTERNALLY COOLED WINDOW FRAME$3.1M
    Missile Defense Agency· Brevard County, FL· Research & development· Sep 22, 2020 – Apr 13, 2026· HQ086020C7148
  6. SBIR/STTR PHASE II R&D: WEAPON INSPECTION, SUSTAINMENT AND RECORDING DEVICE.$2.6M
    Missile Defense Agency· Brevard County, FL· Research & development· Jul 8, 2020 – Mar 10, 2026· HQ086020C7401
  7. SBIR II PROPOSAL F2-18506-SCALABLE AND FAST EPITAXY OF HIGH QUALITY, SINGLE CRYSTAL ZNSE SUBSTRATES$1.8M
    Department of the Air Force· Brevard County, FL· Research & development· Jul 23, 2025 – Jun 10, 2026· FA237725CB021
  8. MULTI-APERTURE FRAME WITH COOLED MS-ZNS WINDOWS$1.8M
    Department of the Air Force· Brevard County, FL· Research & development· Mar 26, 2024 – Jan 29, 2026· FA865124CB018

Federal grants & assistance received

Grants, loans (counted at their subsidy cost), direct payments and insurance, by fiscal year of the action (USAspending.gov, FABS). Reported apart from contracts and never added to them.

MAINSTREAM ENGINEERING CORP received $1.2M in federal assistance in FY2026, on 8 actions (1 new awards). Its largest program was 81.135 · Advanced Research Projects Agency - Energy ($1.2M).

Assistance · FY2026
$1.2M
New awards
1
Actions
8
Since FY2021
$8.1M

Assistance by fiscal year

  1. 717.8KFY2021
  2. 1.3MFY2022
  3. 2MFY2023
  4. 3MFY2024
  5. -134.5KFY2025
  6. 1.2MFY2026

By type

  1. Grants$1.2M100%

Top programs

  1. 81.135 · Advanced Research Projects Agency - Energy$1.2M100%

Awarding agencies

  1. Department of Energy$1.2M100%

Largest awards

  1. HIGH CONVERSION CELL-LEVEL BATTERY POWER CONVERTER$1.3M
    81.049 · Office of Science Financial Assistance Program· Department of Energy· Cooperative agreement· Jul 28, 2023 – Nov 21, 2025· DESC0024119
  2. COUPLED SOLAR GEOTHERMAL STORAGE SYSTEM (CSGSS) FOR SINGLE RESIDENCES AND DISTRICT HEATED COMMUNITIES$1.3M
    81.049 · Office of Science Financial Assistance Program· Department of Energy· Project grant· Jun 3, 2021 – Dec 4, 2025· DESC0020709
  3. STRAINED LINEAR ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE HEAT EXCHANGER$1.3M
    81.049 · Office of Science Financial Assistance Program· Department of Energy· Project grant· Jul 21, 2023 – Nov 21, 2025· DESC0023791
  4. THIS COOPERATIVE AGREEMENT ALLOWS ARPA-E AND RECIPIENT MAINSTREAM ENGINEERING CORPORATION TO WORK TOGETHER TO DEVELOP A 1/10TH SCALE OF AN…$1.2M
    81.135 · Advanced Research Projects Agency - Energy· Department of Energy· Cooperative agreement· Jul 7, 2026 – Sep 16, 2026· DEAR0002162
  5. CONTROL NUMBER:2692-1515 MAINSTREAM ENGINEERING CORPORATION AWARD NUMBER: DE-AR0001699 FOA NUMBER: DE-FOA-0002692 CONVERTING UNF…$1M
    81.135 · Advanced Research Projects Agency - Energy· Department of Energy· Cooperative agreement· Jan 4, 2023 – Jun 17, 2026· DEAR0001699

Source: Federal financial assistance transactions (Financial Assistance Broker Submission) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 3, 2026, loaded Oct 3, 2026 · FY2021–FY2026.

Subawards

Matched by Unique Entity ID: the first-tier subawards this organization reported as a prime recipient, and those primes reported paying it.

As a prime: who it pays · FY2026

No subawards reported as a prime in FY2026.

As a sub-recipient: who pays it · FY2026

  • Sub-contracts: $189K (1 subaward)

1 prime

  1. SIERRA NEVADA COMPANY, LLC$189K100%
    ENGLEWOOD, CO · 1 subaward

By fiscal year

  • FY2021: $1.5M paid out · $12.6M received
  • FY2022: $183.6K paid out · $660.3K received
  • FY2023: $1.2M paid out · $499.2K received
  • FY2024: $442K paid out · $13.4M received
  • FY2025: $2.7M paid out · $1.6M received
  • FY2026: $0 paid out · $189K received

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 3, 2026, loaded Oct 3, 2026 · Subawards loaded from FY2021.

Teaming partners

Companies this company reported paying, primes that reported paying it, from FFATA subaward reports.

Companies it pays

19 companies · $5.9M reported

  1. THE PENNSYLVANIA STATE UNIVERSITY$2.9M
    UNIVERSITY PARK, PA · 14 subawards · Scientific research and development services
  2. NLIGHT INC$1.2M
    CAMAS, WA · 2 subawards · Scientific research and development services
  3. AUBURN UNIVERSITY$490.4K
    AUBURN, AL · 1 subaward · Scientific research and development services

Primes that pay it

6 companies · $28.9M reported

  1. LOCKHEED MARTIN CORPORATION$28.5M
    FORT WORTH, TX · 25 subawards · Scientific research and development services
  2. SIERRA NEVADA COMPANY, LLC$189K
    ENGLEWOOD, CO · 1 subaward · Aerospace product and parts manufacturing
  3. UNIVERSITY OF MASSACHUSETTS LOWELL$99.9K
    LOWELL, MA · 1 subaward

Showing the top 3 of each list. Open the profile for potential partners and the full lists.

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 3, 2026, loaded Oct 3, 2026 · Subawards loaded from 2021.

Competitors

Companies that win from the same buyers in the same markets: obligations by agency and industry compared over the last three fiscal years.

Compared on 22 markets (agency × industry), FY2024–FY2026.

  1. SPECTRAL SCIENCES, INC$28.3M−87% in FY2026
    BURLINGTON, MA · 34% of this company's obligations are in markets they both serveAir Force · Scientific research and development servicesNavy · Scientific research and development servicesMissile Defense Agency · Scientific research and development services+2 more
  2. OPTO-KNOWLEDGE SYSTEMS INC$31M−74% in FY2026
    TORRANCE, CA · 31% of this company's obligations are in markets they both serveAir Force · Scientific research and development servicesNavy · Scientific research and development servicesMissile Defense Agency · Scientific research and development services+2 more
  3. GREENSIGHT INC.$23.5M−75% in FY2026
    CHARLESTOWN, MA · 28% of this company's obligations are in markets they both serveAir Force · Scientific research and development servicesNavy · Scientific research and development servicesArmy · Scientific research and development services

Showing the top 3 of 25 competitors. Open the profile for the full list.

Who sells to the same buyers in the same markets, not who wins against whom on a given contract. Prime contract obligations by the agency and NAICS code of each award; subawards are never added. A company is a family of legal entities, joined by parent UEI or, in part, by an AI reading of names.

Source: Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 3, 2026, loaded Oct 3, 2026 · FY2024–FY2026.

Source: Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 3, 2026, loaded Oct 3, 2026.