Marathon Fusion designs, engineers and scales next-generation technologies to enable the deployment of fusion power plants.
Marathon Fusion has raised $3.6M in total funding. The most recent round was Grant. The last funding was announced in September 2026.
Marathon Fusion's investors include Liquid 2 Ventures, US Department of Energy, 1517 Fund, Anglo American, Divergent Capital.
Marathon Fusion is headquartered in San Francisco, United States.
Marathon Fusion designs, engineers and scales next-generation technologies to enable the deployment of fusion power plants.
Marathon Fusion is at the Grant stage.
Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated .
"Marathon Fusion — Funding & Investors." VCBacked, September 3, 2026, https://www.vcbacked.co/company/marathon-fusion. Accessed November 12, 2026.
VCBacked. (2026). Marathon Fusion — Funding & Investors. Retrieved November 12, 2026, from https://www.vcbacked.co/company/marathon-fusion
{{cite web |title=Marathon Fusion — Funding & Investors |url=https://www.vcbacked.co/company/marathon-fusion |website=VCBacked |access-date=November 12, 2026}}Profile data sourced and verified per the VCbacked methodology · Last funding round dated
Work at Marathon Fusion? Request a listing update