# Josh Browne

> Josh Browne is the co-founder and CEO of M2X Energy, a Rockledge, Florida climate-tech company that converts wasted methane from flares and landfills into low-carbon methanol using modular, truck-transportable gas-to-liquids systems built around repurposed internal-combustion engines. M2X grew out of his Columbia PhD dissertation, was founded in 2020 by Breakthrough Energy Ventures, and raised a $40 million Series B in 2024 (about $62.5 million total). Before M2X, Browne founded a data-science firm, Rho AI, that was acquired by General Motors. He started as the company's CTO and now runs it as CEO.

- **Role:** Co-founder & CEO at M2X Energy Inc.
- **Organizations:** M2X Energy Inc., Rho AI, Breakthrough Energy Ventures (portfolio), ClearFlame Engine Technologies, Columbia University
- **Nationality:** American
- **Education:** PhD, Earth & Environmental Engineering, Columbia University
- **Known for:** Co-founded M2X Energy and turned his PhD dissertation into a venture-backed company, Founded Rho AI, a data-science firm acquired by General Motors, Raised roughly $62.5 million in total funding for M2X, including a $40 million Series B

## Career timeline

- **Pre-2020** — Founded Rho AI, a data-science firm later acquired by General Motors
- **2020** — M2X Energy founded by Breakthrough Energy Ventures, based on Browne's Columbia dissertation; he serves as co-founder and CTO
- **2021** — M2X raises $20 million Series A led by Breakthrough Energy Ventures
- **2023** — M2X emerges from stealth to capture flare gas for methanol production
- **2024** — M2X raises $40 million Series B led by Conifer Infrastructure Partners; Browne leads as CEO
- **2025** — Targets first commercial system deployment and methanol delivery

## Achievements

- Co-founded M2X Energy and turned his PhD dissertation into a venture-backed company
- Founded Rho AI, a data-science firm acquired by General Motors
- Raised roughly $62.5 million in total funding for M2X, including a $40 million Series B
- Secured a $10 million award from the U.S. DOE Office of Fossil Energy and Carbon Management
- Built modular gas-to-liquids systems that deploy in hours rather than years

## Latest updates

- **2024-06** — M2X Energy closed a $40 million Series B led by Conifer Infrastructure Partners to accelerate commercial operations.
- **2025** — Company targeting its first commercial system deployment and methanol delivery.

## Links

- Website: https://m2x.energy
- LinkedIn: https://www.linkedin.com/in/jbbrowne/

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Profile page: https://yespress.io/josh-browne
Published by YesPress — https://yespress.io
Last updated: 2026-06-11