Balerion Advisor Doug McAdams sits down with Brian Berzin, Co-Founder & CEO of Thea Energy, to discuss stellarator fusion. Thea Energy is developing a planar-coil stellarator architecture spun out of Princeton Plasma Physics Lab. The company is focused on making fusion practical for utility-scale power generation by shifting stellarator complexity from precision hardware into software-controlled magnet arrays.
Timestamped Overview
00:00 – Introduction to Brian Berzin and Thea Energy
00:35 – Brian’s background in engineering, finance, venture, and fusion
02:33 – Fusion as an energy investment thesis
04:35 – Commercial fusion as utility-scale power generation
05:53 – Why fusion matters for energy, safety, geopolitics, and prosperity
11:19 – The shift from laboratory fusion science to commercial engineering
15:43 – Princeton Plasma Physics Lab, David Gates, and the origins of Thea Energy
17:52 – Why stellarators differ from tokamaks
20:54 – The planar-coil stellarator breakthrough
22:23 – Thea’s 300+ magnet array and software-controlled plasma shaping
24:34 – Using software control to handle variability, wear, and long-term plant operation
28:38 – Series A progress, magnet iteration, and hardware development
31:49 – Superconducting magnet arrays, field precision, and DOE milestone work
34:37 – AI, machine learning, and control systems for fusion optimization
40:41 – Fuel choice and the case for deuterium-tritium fusion
43:32 – Neutron capture, blankets, tritium breeding, and power conversion
46:22 – Roadmap to EOS, Helios, and first-half-2030s grid power
50:50 – Manufacturing scale-up and building fleets of fusion power plants
52:06 – Practicality, cost of electricity, and scaling fusion within the power industry
