Proton Energy Systems Inc.
Wallingford, CT Doing business as NEL Hydrogen US
- UEI
- HXVYJL2C8DY8
- CAGE
- 1UZE7
- Primary NAICS
- 325120 Industrial Gas Manufacturing
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 10 Technology Dr, Wallingford, CT 06492, USA
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| The government intends to procure new proton energy systems/NEL hydrogen brand s-series 3, S40 hydrogen gas generators… | National Oceanic and Atmospheric Administration | $306,816 | |
| Replacement hogen generators for the national logistics support center in grandview, MO. | National Oceanic and Atmospheric Administration | $276,271 | |
| Hogen maintenance kits for the sterling field support center in sterling, VA. | National Oceanic and Atmospheric Administration | $23,250 | |
| NWS hydrogen generator maintenance supplies and factory maintenance training | National Oceanic and Atmospheric Administration | $89,475 | |
| Hogen parts for the sterling field support center in sterling, VA. | National Oceanic and Atmospheric Administration | $20,825 |
About Proton Energy Systems Inc.
Proton Energy Systems Inc., doing business as NEL Hydrogen US, manufactures hydrogen generators, electrolyzers, and associated maintenance kits for federal agencies as a foreign-owned, for-profit manufacturer competing in full-and-open procurements with no set-aside designation across its 186-award footprint. The company operates primarily as a prime contractor (97% of awards) supplying specialized hydrogen generation equipment and parts to civilian and defense agencies, with occasional subcontract engagement on electrolyzer development projects.
Proton Energy Systems' capability portfolio centers on proton exchange membrane (PEM) electrolyzer design, manufacturing, and support. On the contract side, the vendor supplies HOGEN hydrogen generators, maintenance kits, spare parts, and field service training to support weather forecasting and upper-air observation operations. Recent representative awards include a $120,328.50 sole-source purchase order from the Army Research Laboratory (March 2026) for one Nel Hydrogen S40 generator with associated parts and one year of preventative maintenance, an $191,520 purchase order from the National Oceanic and Atmospheric Administration (September 2025) for two hydrogen generators with ancillary parts and shipping for upper-air operations, and a $127,257 purchase order from NOAA (August 2025) for a Proton Energy Systems S-Series 3 S40 hydrogen generator destined for the Weather Service Office in Pago Pago, American Samoa. On the grant side, Proton Energy Systems holds three cooperative agreements with the Department of Energy's Office of Energy Efficiency and Renewable Energy and the Army Corps of Engineers Engineer Research and Development Center for development of fully automated PEM electrolyzer production lines, anion exchange membrane configurations, and low-cost hydrogen for energy storage and resiliency applications, demonstrating the vendor's position as a government-backed electrolyzer technology developer.
Customer concentration sits heavily with NOAA, which accounts for 55% of recent awards (67 awards, $6.8 million combined potential value) spanning maintenance kits, spare parts, and generator procurements for National Weather Service operations across Hawaii, American Samoa, and mainland locations. The Department of the Navy ranks second by potential value ($6.2 million across five awards), followed by the Department of the Army Corps of Engineers Engineer Research and Development Center ($2.7 million across four awards). The vendor holds a single-award IDIQ with NOAA (ceiling $1.5 million, awarded July 1, 2026, through June 30, 2031) for National Weather Service hydrogen generator maintenance supplies and factory maintenance training, with one delivery order of $89,475 issued on award date. Proton Energy Systems also places work under a $6.2 million Navy indefinite-delivery contract (N0017301D2006) and the Federal Supply Schedule GS07F082AA (seven task orders, $220 thousand combined potential value). In its subcontractor role, the vendor performs electrolyzer cell-stack development and qualification under Hamilton Sundstrand Corporation and provides hydrogen gas generators as a component supplier to Atlantic Diving Supply, Inc.; it also serves as a sub-recipient on electrolyzer technology projects led by Mott Corp, Georgia Tech Research Corporation, and Columbia University.
Activity has remained flat at approximately six awards per year over 2024–2026, with six awards (combined potential value $452 thousand) reaching ultimate completion within the next twenty-four months. Combined dollars obligated across all awards total $196.5 million, significantly exceeding combined potential value of $28.7 million, indicating substantial prior-year obligation activity. Proton Energy Systems' federal presence extends back to 1997 and spans 37 distinct customer agencies, though concentration with NOAA and Navy reflects the vendor's specialization in hydrogen generation equipment for meteorological, research, and defense energy applications.
Quick answers
What is Proton Energy Systems Inc.'s UEI?
Proton Energy Systems Inc.'s Unique Entity ID (UEI) in SAM.gov is HXVYJL2C8DY8.
What is Proton Energy Systems Inc.'s CAGE code?
Proton Energy Systems Inc.'s CAGE code is 1UZE7.
What is Proton Energy Systems Inc.'s primary NAICS code?
Proton Energy Systems Inc.'s primary NAICS code is 325120 (Industrial Gas Manufacturing).
Where is Proton Energy Systems Inc. located?
Proton Energy Systems Inc.'s physical address in SAM.gov is 10 Technology Dr, Wallingford, CT 06492, USA.
Is Proton Energy Systems Inc. registered in SAM.gov?
Yes. Proton Energy Systems Inc.'s SAM.gov registration is active through December 23, 2026.
What is Proton Energy Systems Inc.'s most recent federal award?
Proton Energy Systems Inc.'s most recent federal contract award is The government intends to procure new proton energy systems/NEL hydrogen brand s-series 3, S40 hydrogen gas generators… (1333MH26P0041), from National Oceanic and Atmospheric Administration, on September 23, 2026.
On GovTribe
See Proton Energy Systems Inc.'s full federal record
- Federal contract awards
- IDV awards
- Federal grant awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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