Insights

Rapid Facility Expansion Mainspring Energy is investing heavily in manufacturing capacity, with recent investments totaling over $450 million for new facilities in Pittsburgh and moss Landing. This demonstrates a significant increase in production capability, creating opportunities to supply advanced generators and related infrastructure to meet their growing manufacturing needs.

Sustainable Innovation The company's focus on low-emission, fuel-flexible power solutions positions them as a key player in the clean energy transition. There are potential sales opportunities in supplying environmentally friendly tech, such as hydrogen-compatible components or emissions-reducing accessories for their linear generators.

Strategic Partnerships Partnerships with companies like Verdagy confirm Mainspring’s interest in green hydrogen projects. This opens doors for advanced electrolysis equipment, hydrogen storage, and integration solutions that could complement their hydrogen-powered generators and expand their market offerings.

Financial Strength With Series F funding of $258 million and annual revenues ranging from $500 million to $1 billion, Mainspring Energy has substantial financial backing. This indicates a high potential for large-scale procurement deals, as they expand their operational footprint and develop new product lines.

Market Positioning As a leading innovator in flexible, scalable power generation for critical infrastructure, Mainspring Energy’s focus on reliable, renewable-compatible solutions makes them a vital partner for utilities and large industrial clients seeking sustainable power sources, suggesting ample opportunities for tailored technology and service offerings.

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

Where is Mainspring Energy's headquarters located?

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Mainspring Energy's main headquarters is located at 3601 Haven Avenue, Menlo Park, CA 94025, US. The company has employees across 4 continents, including North AmericaEuropeAsia.

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 October 2025, Mainspring Energy has approximately 509 employees across 4 continents, including North AmericaEuropeAsia. Key team members include Vice President Engineering: D. U.Head Of Sales: C. B.Head Of Brand Marketing: T. R.. 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 October 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

Mainspring Energy

Electric Power GenerationUnited 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

Headquarters
3601 Haven Avenue, Menlo Park, CA 94025, US
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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