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Mainspring Energy

Renewable Energy & Sustainable Infrastructure

Powering a Zero Carbon Future, Today.

450Tonnes of CO2 saved per unit

Impact Rating

Series EFunding Stage
$468.0 MillionTotal Amount Raised
$85.6 MillionAnnual Revenue

Company Overview

Mainspring Energy is pioneering the transition to a net-zero carbon grid through its innovative linear generator technology, which offers high efficiency, low cost, and ultimate flexibility. Their solution is fuel-flexible, allowing for the integration of renewable fuels like biogas and hydrogen, and is already being utilized at Fortune 500 customer sites. The company envisions a clean energy system that leverages solar and wind power, supported by technologies that ensure affordability and resilience.

Their Impact

Mainspring Energy's innovative technology is poised to significantly reduce carbon emissions globally, fostering a cleaner environment and directly combating climate change.

Company Mission and Values

  1. Pragmatic Optimism: Balancing ambition and creativity with practicality.

  2. Excellence Without Ego: Striving for excellence with humility.

  3. Proactive Collaboration: Promoting a culture of inclusion and respect, extending beyond the team to interactions with partners and customers.

Current Investors

The company is backed by top-tier venture, strategic, and financial investors including Khosla Ventures, Bill Gates, ClearSky Ventures, American Electric Power, and many others.

Use of Funds and Companies Growth Strategy

Funds will be used to expand operations and scale manufacturing of its innovative clean energy generators for commercial, industrial, and grid-side customers.

Their growth strategy revolves around the deployment of the Mainspring Linear Generator, a local, dispatchable, and fuel-flexible power solution that can adapt to changing grid landscapes and facilitate the transition from natural gas to renewable fuels.

How are Mainspring Energy driving innovation?

• Near-Zero NOx Emissions: The technology operates through a low-temperature, uniform reaction that maintains peak temperatures below the levels where NOx forms, resulting in near-zero NOx emissions, a significant reduction compared to traditional fuel burning methods.

• Fuel Flexibility: The linear generator technology can dynamically adjust for varying fuel quality and type, including renewables such as biogas, green ammonia, and green hydrogen, thanks to its continuous and adaptive control without mechanical constraints.

• Fully Dispatchable: The generators can match power output with building demand while integrating with onsite solar and energy storage, promoting the rapid adoption of renewables. It also ensures power supply even when the grid is down, making it a reliable choice for renewable microgrids.

• Low Capital and Maintenance Costs: The generator is designed with standard materials and has only two moving parts, operating without oil or expensive fuel cell catalysts, which results in low capital and maintenance costs.

What are the risks associated with Mainspring Energy?

The movement to renewable energy includes risks such as power outages and natural gas leaks however Mainspring Energy provide incentives for flexible renewable-energy generation and facilitates targeted leak detection measures to help mitigate associated risks.

Leadership & Team

  • Shannon Miller

    CEO

    Developed a ground-breaking linear generator during her Ph.D. at Stanford, earning accolades for her clean energy leadership.

  • Matt Svrcek

    CTO

    Spearheaded the companies technology, leveraging his Stanford research on fuel efficiency and his previous role analysing renewable energy economics.

  • Adam Simpson

    Chief Product Officer

    Developed the Mainspring Linear Generator, leveraging his expertise in energy analysis and MEng.

  • Dave DeGraaff

    COO

    Brought extensive experience from SunPower and Ausra, and expertise in solar technologies and turbine cooling.

Research by: Aarush Wangoo

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