Home
Loading

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

aVenture is in Alpha: During this preview period, you should expect the research data to be limited and may not yet meet our exacting standards. We've made the decision to provide early access to our data to showcase the product as we build, but you should not yet rely upon it alone for your investment decisions.

Get in touch

  • Contact

  • Request a demo

  • Request data updates

  • Add a company

Research

  • Companies

  • Investors

  • People

aVenture

  • Sitemap

  • Feature requests

Member

Backed by

© aVenture Investment Company, 2026. All rights reserved.

San Francisco, CA, USA

Privacy Policy

aVenture Investment Company ("aVenture") is an independent research platform providing detailed analysis and data on startups, venture capital investments, and key industry individuals. It is not a registered investment adviser, broker-dealer, or investment advisor and does not provide investment advice or recommendations. The data provided by aVenture does not constitute recommendations or advice, whether by methodology, analysis, AI-generated content, or a statement written by a staff member of aVenture.

aVenture is not affiliated with any of the people, companies, organizations, government agencies, regulatory bodies, or investment funds we provide coverage for on this site unless explicitly stated otherwise. Users assume full responsibility for decisions made based on information obtained from this platform. Links to external websites do not imply endorsement or affiliation with aVenture. Any links that provide the ability to invest in a primary or secondary transaction in a company are for convenience only and do not constitute solicitations or offers to buy or sell an investment. Investors should exercise heightened precaution and due diligence when investing in private companies, especially those not independently audited.

While we strive to provide valuable insights with objectivity and professional diligence, we cannot guarantee the accuracy of the information provided on our platform. Before making any investment decisions, you should verify the accuracy of all pertinent details for your decision. To the fullest extent permitted by law, aVenture shall not be liable for any direct, indirect, incidental, consequential, or financial damages arising from use of this site, whether by consumers of its contents directly or by persons or organizations covered by our research, even if we are advised of the possibility. Our best-efforts processes and correction request forms do not create a warranty or duty of care.

Profiles on this platform may include content generated in part by large language models (LLMs, artificial intelligence) that aggregate publicly available sources (e.g., SEC EDGAR, public filings, press releases). Source attribution is provided where known; always verify statements and claims here against original sources before relying on any data. Content on our site may contain inaccuracies, omissions, or what are commonly called 'hallucinations' if generated in part or in full by AI / LLMs. The risk can also exist even when content is written by a human, as internal and third-party sources may also have inaccuracies for the same or different reasons. While we randomly audit a proportion of content, this is not exhaustive.

We recommend that an independent auditor be hired to verify the accuracy of the information before relying on it for any sensitive decisions. By accessing this platform, you agree not to rely solely on any information generated by AI, aggregated, or sourced or written otherwise on this site, for investment, financial, or other decisions. aVenture assumes no responsibility for inaccuracies, omissions, or hallucinations. You must independently verify all data from primary sources. Use of this platform constitutes your waiver of claims for reliance-based damages, including negligent misrepresentation. To report an error, request a correction, or dispute information about a company or individual, contact us via our request data updates form.

Loading homepage
Loading
Home›Research›Companies

Companies

Loading
Home›
Research›
Companies›
Mainspring Energy
AddedFeb 13, 2024
UpdatedJun 18, 2026
Mainspring Energy

Mainspring Energy

Late Stage Private

Mainspring Energy: A versatile US power generation company, innovating with Linear Alternator Technology.

HQ
Menlo Park, CA, US
Founded
2010
Overview
Compare
Fundraising
Employees
Website

Mainspring Energy, founded with a mission to revolutionize power generation, focuses on providing reliable and clean energy solutions through its innovative Linear Alternator Technology. The company's core vision is to enable a zero-carbon future by offering versatile power generators that can switch between multiple fuel types, including traditional and cleaner fuels. Mainspring Energy primarily serves commercial, industrial, and utility customers across the United States, addressing their capacity, resilience, and cost needs while preparing them for a transition to increasingly cleaner energy sources.

Notable figures associated with Mainspring Energy include its founding team and key investors who have supported the company's growth and innovation. The company has achieved significant milestones, including the successful deployment of its Linear Generators in various industries, demonstrating their reliability and efficiency. Mainspring Energy's impact lies in its contribution to reducing carbon emissions and promoting sustainable energy practices, positioning itself as a leader in the transition to a zero-carbon future.

Mainspring Energy - Similar Companies

VoltaGrid logo

VoltaGrid

voltagrid.com

EnergyRe logo

EnergyRe

energyre.com

Altus Power logo

Altus Power

altuspower.com

Moxion Power Co. logo

Moxion Power Co.

Emrgy logo

Emrgy

emrgy.com

Intersect Power logo

Intersect Power

intersectpower.com

Kairos Power logo

Kairos Power

kairospower.com

FlexEnergy logo

FlexEnergy

flexenergy.com

Accelergen Energy logo

Accelergen Energy

Clearway Energy Group logo

Clearway Energy Group

Bloom Energy logo

Bloom Energy

bloomenergy.com

Arcadia logo

Arcadia

arcadia.com

Earthrise Energy logo

Earthrise Energy

Clean Energy Systems logo

Clean Energy Systems

Heliogen logo

Heliogen

heliogen.com

Mainspring Energy - Quick Facts

Who are Mainspring Energy's competitors?

Companies similar to Mainspring Energy include VoltaGrid, EnergyRe, Altus Power and Moxion Power Co..

When was Mainspring Energy founded?

Mainspring Energy was founded in 2010.

Where is Mainspring Energy's headquarters located?

Mainspring Energy's headquarters is located in Menlo Park, CA, US.

How much has Mainspring Energy raised to-date?

As of Apr 17, 2023, Mainspring Energy has raised a total of $468M (USD).

How many employees does Mainspring Energy have?

Mainspring Energy has 381 employees as of Feb 5, 2024.

Mainspring Energy - Classification

Industry
  • Hardware
Ownership
  • Equity
  • Venture Capital
Technology
  • Cleantech
Geographic Exposure
  • United States
Revenue
  • Transactional
Customer
  • Enterprise
Main Product
  • Power Generation
Tags
  • Utility
NAICS
  • 220000Utilities
  • 221000Utilities
  • 221100Electric Power Generation, Transmission and Distribution
SIC
  • 4900Electric, Gas, And Sanitary Services
  • 4910Electric Services
  • 4911Electric Services
Show 6 more industry codes
NAICS
  • 221110Electric Power Generation
  • 221113Nuclear Electric Power Generation
  • 221114Solar Electric Power Generation
SIC
  • 1300Oil And Gas Extraction
  • 1380Oil And Gas Field Services
  • 1382Oil And Gas Field Exploration Services