Insights

Growing Manufacturing Capabilities Mainspring Energy is investing heavily in large-scale manufacturing facilities, including a 300,000-square-foot plant in Pittsburgh supported by substantial funding. This expansion indicates a strong capacity to produce advanced power generators at scale, presenting opportunities to supply components, parts, and maintenance services.

Strategic Industry Partnerships Collaborations with companies like Verdagy for hydrogen electrolysis highlight Mainspring's focus on integrating clean energy solutions. Opportunities exist for joint ventures or supplying innovative technologies that complement their hydrogen-powered generators and sustainable power solutions.

Significant Funding and Growth Recent Series F investment of $258 million underscores robust financial health and growth ambitions. This financial backing enables expansion into new markets and enhances R&D efforts, providing opportunities to offer advanced technology solutions or support services aligned with their innovation goals.

Focus on Sustainability Mainspring's emphasis on low-emission generators and clean-tech manufacturing demonstrates a strong commitment to sustainability, making them an ideal partner or client for eco-friendly solutions, renewable energy components, and environmental compliance services.

Expanding Market Reach The company's recent investments in diverse regions and the acquisition of large-scale manufacturing assets suggest an effort to broaden market presence and supply chain capacity. This expansion opens doors for logistics, distribution, and integrated energy system solutions to support their scaled operations.

Mainspring Energy Tech Stack

Mainspring Energy uses 8 technology products and services including Cloudflare CDN, NetSuite, PWA, and more. Explore Mainspring Energy's tech stack below.

  • Cloudflare CDN
    Content Delivery Network
  • NetSuite
    E-commerce
  • PWA
    Miscellaneous
  • Wonderware
    Miscellaneous
  • SAP Maintenance, Repair, and Overhaul
    Operations
  • Lever
    Recruitment Marketing
  • Yoast SEO
    Search Engines
  • Timesheets
    Time Tracking

Media & News

Mainspring Energy's Email Address Formats

Mainspring Energy uses at least 2 format(s):
Mainspring Energy Email FormatsExamplePercentage
First.Last@etagen.comJohn.Doe@etagen.com
100%
First.Last@mainspringenergy.comJohn.Doe@mainspringenergy.com
96%
Last@mainspringenergy.comDoe@mainspringenergy.com
3%
First@mainspringenergy.comJohn@mainspringenergy.com
1%

Frequently Asked Questions

What is Mainspring Energy's phone number?

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You can contact Mainspring Energy'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 Mainspring Energy's official website and social media links?

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Mainspring Energy's official website is mainspringenergy.com and has social profiles on LinkedInCrunchbase.

What is Mainspring Energy's NAICS code?

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Mainspring Energy's NAICS code is 22111 - Electric Power Generation.

How many employees does Mainspring Energy have currently?

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As of December 2025, Mainspring Energy has approximately 517 employees across 4 continents, including North AmericaAsiaEurope. Key team members include Vp Of Business Development: J. I.Vp And Chief Engineer, Mechanical Systems: J. L.Vice President Engineering: D. U.. Explore Mainspring Energy's employee directory with LeadIQ.

What industry does Mainspring Energy belong to?

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Mainspring Energy operates in the Electric Power Generation industry.

What technology does Mainspring Energy use?

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Mainspring Energy's tech stack includes Cloudflare CDNNetSuitePWAWonderwareSAP Maintenance, Repair, and OverhaulLeverYoast SEOTimesheets.

What is Mainspring Energy's email format?

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Mainspring Energy's email format typically follows the pattern of First.Last@etagen.com. Find more Mainspring Energy email formats with LeadIQ.

How much funding has Mainspring Energy raised to date?

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As of December 2025, Mainspring Energy has raised $258M in funding. The last funding round occurred on Apr 14, 2025 for $258M.

When was Mainspring Energy founded?

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Mainspring Energy was founded in 2010.

Mainspring Energy

Electric Power GenerationCalifornia, United States501-1000 Employees

Mainspring designs and manufactures an advanced, flexible power generation solution — the Linear Generator —  that gives leading C&I companies, data centers, and utilities reliable, scalable, sustainable power capacity. Any fuel, any scale, anytime, anywhere.

Section iconCompany Overview

Phone number
NAICS Code
22111 - Electric Power Generation
Founded
2010
Employees
501-1000

Section iconFunding & Financials

  • $258M

    Mainspring Energy has raised a total of $258M of funding over 8 rounds. Their latest funding round was raised on Apr 14, 2025 in the amount of $258M.

  • $500M$1B

    Mainspring Energy's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $258M

    Mainspring Energy has raised a total of $258M of funding over 8 rounds. Their latest funding round was raised on Apr 14, 2025 in the amount of $258M.

  • $500M$1B

    Mainspring Energy's revenue is estimated to be in the range of $500M$1B

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