Insights

Diverse Market Reach Proton OnSite serves a broad range of industries including power plants, semiconductor manufacturing, laboratories, military, aerospace, and renewable energy sectors, presenting numerous opportunities to tailor hydrogen and gas solutions for specialized needs.

Expanding Product Portfolio The company's recent diversification into hydrogen control systems, nitrogen generators, air generators, and packaged solutions opens up additional sales channels for infrastructure projects, industrial applications, and commercial energy systems.

Strong Funding Support With significant grants from the US Department of Energy to develop low-cost hydrogen production technologies, Proton OnSite demonstrates growth potential through innovative manufacturing and cost reduction solutions, attracting interest from government and large industrial clients.

Global Implementation Having installed systems across every continent, Proton OnSite's international footprint offers opportunities to engage with global utilities, industrials, and defense organizations looking to adopt advanced hydrogen solutions for sustainability and operational efficiency.

Strategic Acquisitions Being part of Nel ASA since 2017 enhances Proton OnSite's market credibility and access to advanced electrolyzer technology, enabling sales teams to pitch integrated, innovative, and reliable hydrogen generation solutions to forward-looking clients.

Proton OnSite Tech Stack

Proton OnSite uses 8 technology products and services including PTC Creo, yepnope.js, Modernizr, and more. Explore Proton OnSite's tech stack below.

  • PTC Creo
    Cad & Graphics
  • yepnope.js
    Javascript Frameworks
  • Modernizr
    Javascript Libraries
  • HeadJS
    Javascript Libraries
  • Microsoft
    Miscellaneous
  • Microsoft Office
    Office Suites
  • ANSYS
    Software Development
  • Adobe Fonts
    Web Fonts

Media & News

Proton OnSite's Email Address Formats

Proton OnSite uses at least 1 format(s):
Proton OnSite Email FormatsExamplePercentage
FLast@protononsite.comJDoe@protononsite.com
82%
LastF@protononsite.comDoeJ@protononsite.com
10%
First.Last@protononsite.comJohn.Doe@protononsite.com
7%
FL@protononsite.comJD@protononsite.com
1%

Frequently Asked Questions

Where is Proton OnSite's headquarters located?

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Proton OnSite's main headquarters is located at 10 Technology Drive Wallingford, Connecticut 06492 United States. The company has employees across 4 continents, including North AmericaAsiaSouth America.

What is Proton OnSite's phone number?

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You can contact Proton OnSite's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Proton OnSite's official website and social media links?

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Proton OnSite's official website is protononsite.com and has social profiles on LinkedIn.

What is Proton OnSite's NAICS code?

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Proton OnSite's NAICS code is 211 - Oil and Gas Extraction.

How many employees does Proton OnSite have currently?

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As of February 2026, Proton OnSite has approximately 67 employees across 4 continents, including North AmericaAsiaSouth America. Key team members include Director Of Corporate Marketing: C. V.Director Of Research: K. A.Manufacturing Manager, Cell Stacks: B. C.. Explore Proton OnSite's employee directory with LeadIQ.

What industry does Proton OnSite belong to?

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Proton OnSite operates in the Oil and Gas industry.

What technology does Proton OnSite use?

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Proton OnSite's tech stack includes PTC Creoyepnope.jsModernizrHeadJSMicrosoftMicrosoft OfficeANSYSAdobe Fonts.

What is Proton OnSite's email format?

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Proton OnSite's email format typically follows the pattern of FLast@protononsite.com. Find more Proton OnSite email formats with LeadIQ.

When was Proton OnSite founded?

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Proton OnSite was founded in 1996.

Proton OnSite

Oil and GasConnecticut, United States51-200 Employees

Proton OnSite (formerly Proton Energy Systems, Inc.) is a global leader in hydrogen energy and innovative gas solutions. Since 1996, we have been developing and applying hydrogen technology in creative and practical ways that best meets the diverse requirements of our customers. Our advanced proton exchange membrane (PEM) electrolysis systems coupled with our uncompromising attention to excellence and quality enables us to deliver, install and support gas generation units on every continent. 

More recently, we have expanded our product offerings to include hydrogen control systems, nitrogen generators and air generators. We have also expanded our services to include packaged solutions incorporating tanks, compressors and other ancillary equipment. These products and services now allow us to serve a broader commercial set of markets including power plants, semiconductor manufacturers and laboratories.

Proton OnSite is a trusted partner to the U.S. military, aerospace, fueling and renewable energy industries because at Proton, we understand that the current energy market demands leadership, expertise and innovation. We are also at the forefront of the clean energy industry, committed to developing superior energy solutions that provide the most value to our partners throughout the globe.

Section iconCompany Overview

Headquarters
10 Technology Drive Wallingford, Connecticut 06492 United States
Phone number
NAICS Code
211 - Oil and Gas Extraction
Founded
1996
Employees
51-200

Section iconFunding & Financials

  • $50M$100M

    Proton OnSite's revenue is estimated to be in the range of $50M$100M

Section iconFunding & Financials

  • $50M$100M

    Proton OnSite's revenue is estimated to be in the range of $50M$100M

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