Starcast Join the waitlist
Summation with Auren Hoffman

Summation with Auren Hoffman

Helion CEO David Kirtley on why fusion finally works

Sep 29, 2026 · 42m

Coming soon to iPhone. Already have it? “Listen in Starcast” takes you straight there.

On this episode

About this episode

David Kirtley is the co-founder and CEO of Helion Energy, the fusion company. Helion has raised more than $1.5 billion at a $15.5 billion valuation, and Sam Altman is its biggest investor and former chairman. Before fusion, David worked on rocket and space propulsion. In this episode of Summation, David and Auren discuss: Skipping the steam turbine and pulling electricity straight out of a starHow a Best Buy network card helped make fusion possibleRegulating a 150 million degree machine like ...