Helion Energy — Valuation, Funding & Investors

Helion is building a fusion power plant using magneto-inertial fusion, compressing plasma made from deuterium and helium-3 with pulsed magnets, a linear approach that differs from the tokamak design most fusion companies use. In May 2023 it signed the first commercial fusion power agreement, agreeing to supply Microsoft with 50 megawatts of electricity starting in 2028, and it struck a second deal with steelmaker Nucor for a 500-megawatt plant targeting 2030.

David Kirtley, John Slough, Chris Pihl and George Votroubek founded Helion in 2013, and it is headquartered in Everett, Washington. Its Polaris prototype reached plasma temperatures of 150 million degrees Celsius and demonstrated measurable deuterium-tritium fusion, a first for a privately developed fusion machine.

Listed funds carry late-stage private names. A fund's latest schedule of investments shows whether it holds Helion Energy.

Often trade at a premium or discount to NAV.

Platforms match existing holders with buyers. Helion Energy availability at any moment is set by the holders.

High minimums, transfer approval, company right-of-first-refusal.

Valuations, rounds and IPO status for every company in the directory — Helion Energy included.

The last valuation is $15.5B (post-money, Jun 2026).

Lead investors for each round are in the funding timeline.

The closest fusion energy peers are on the competitors page.

The routes section explains what is realistically available for a company at this stage.

No. Helion Energy is a private company; its shares do not trade on a public exchange.