Insights

Hydrogen Leader Target energy and industrial customers seeking PEM electrolysis and hydrogen generation solutions, emphasizing Proton OnSite’s global installation footprint and proven track record since 1996 to open conversations with power plants, semiconductor facilities, and laboratories.

Expanded Portfolio Offerings now include hydrogen control systems, nitrogen and air generators, plus packaged solutions with tanks and compressors, enabling cross-sell opportunities to customers requiring integrated gas generation and ancillary equipment.

Defense & Aerospace Position Proton OnSite as a trusted partner for military, aerospace, fueling, and renewable energy programs to pursue government and large-scale private contracts that value reliability, quality, and advanced water-splitting technology.

DOE & Grants Leverage historical DOE funding and partnerships to pursue grant-backed manufacturing improvements and cost-down initiatives for electrolyzer components, presenting a pathway to lower TCO for potential buyers.

Strategic Partnerships Explore collaborations with research institutions and eco/renewable projects (e.g., Ecolectro/NREL ecosystem) to co-develop best-practice documents and roadmaps, creating avenues for joint ventures, pilots, and early-adopter deployments.

Similar companies to Proton OnSite

Proton OnSite Tech Stack

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

  • CREO
    E-commerce
  • yepnope.js
    Javascript Frameworks
  • HeadJS
    Javascript Libraries
  • Modernizr
    Javascript Libraries
  • Microsoft
    Miscellaneous
  • Microsoft Office
    Office Suites
  • Acceptance Test
    Software Development
  • Adobe Fonts
    Web Fonts

Media & News

Proton OnSite's Email Address Formats

Proton OnSite uses at least 4 email formats:
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

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.

How much revenue does Proton OnSite generate?

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As of July 2026, Proton OnSite's annual revenue is estimated to be $10M - $25M.

What is Proton OnSite's SIC code and NAICS code?

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Proton OnSite's SIC code is 3599 - Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified and NAICS code is 211 - Oil and Gas Extraction.

How many employees does Proton OnSite have currently?

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As of July 2026, Proton OnSite has approximately 67 employees across 4 continents, including North America, Asia and South America. Key team members include Director Of Corporate Marketing: C. V., Senior Manager: V. T. and Piping Designer: J. M. 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 & Energy industry.

What technology does Proton OnSite use?

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Proton OnSite's tech stack includes CREO, yepnope.js, HeadJS, Modernizr, Microsoft, Microsoft Office, Acceptance Test and Adobe 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.

How much funding has Proton OnSite raised to date?

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As of July 2026, Proton OnSite has raised $3.3M in funding. The last funding round occurred on Mar 31, 2020.

When was Proton OnSite founded?

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Proton OnSite was founded in 1996.
Proton OnSite logo

Proton OnSite

Oil & EnergyConnecticut, United States51-200 Employees

Proton OnSite designs and delivers hydrogen production and gas-generation systems for a range of industrial needs. The equipment is deployed globally, with installation and ongoing support ensuring reliable operation across continents, and the company has expanded its offerings to include broader gas generation and packaged solutions.

Headquartered in Wallingford, Connecticut, the company has operated since 1996, serving power plants, semiconductor manufacturers and laboratories. It maintains relationships with the U.S. military, aerospace, fueling and renewable energy industries, reflecting a diversified customer base across defense and energy markets. Since 2017, Proton OnSite has been part of Nel Hydrogen US, following Nel ASA's acquisition of Proton Energy Systems.

Section iconCompany Overview

Phone number
SIC Code
3599 - Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified
NAICS Code
211 - Oil and Gas Extraction
Founded
1996
Employees
51-200

Section iconFunding & Financials

  • $3.3M

    Proton OnSite has raised a total of $3.3M of funding over 4 rounds. Their latest funding round was raised on Mar 31, 2020 as a Grant.

  • $10M - $25M

    Proton OnSite's revenue is estimated to be in the range of $10M - $25M

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