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Helios

Stellarator

Associated Organization:

Thea Energy

Project Status

Planned

Publications

Overview of the helios design: A practical planar coil stellarator fusion power plant

Fusion Engineering and Design, 2026

The Helios stellarator fusion power plant: Scoping studies, heating, and fueling

Fusion Engineering and Design, 2026

Electrical and power supply systems of Helios fusion power plant

Fusion Engineering and Design, 2026

MHD stability analysis of the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Preliminary nuclear and thermal analysis of a dual-coolant lead-lithium blanket concept for the Helios fusion power plant

Fusion Engineering and Design, 2026

Preliminary engineering design of the first wall and X-point divertor of the Helios planar coil stellarator

Fusion Engineering and Design, 2026

Planar coil design for the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Equilibrium optimization of the Helios planar coil stellarator power plant

Fusion Engineering and Design, 2026

Core profile prediction and transport analysis of the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Design of the superconducting encircling coils for Helios, the planar coil stellarator

Fusion Engineering and Design, 2026

See all 15 publications →

Thea Energy's "Helios" is a 400 MW fusion power plant that leverages the Company's proprietary planar coil stellarator architecture and will provide abundant fusion energy to the electrical grid. Helios combines the inherent benefits of the stellarator, including steady-state operation and high efficiency, with a practical maintenance scheme enabled by the simple, programmable magnet hardware.Thea Energy plans to operate Helios in the 2030s.

  • Helios image 1
  • Helios image 2
  • Helios image 3
  • Helios image 1
  • Helios image 2
  • Helios image 3

Project Status

Planned

Publications

Overview of the helios design: A practical planar coil stellarator fusion power plant

Fusion Engineering and Design, 2026

The Helios stellarator fusion power plant: Scoping studies, heating, and fueling

Fusion Engineering and Design, 2026

Electrical and power supply systems of Helios fusion power plant

Fusion Engineering and Design, 2026

MHD stability analysis of the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Preliminary nuclear and thermal analysis of a dual-coolant lead-lithium blanket concept for the Helios fusion power plant

Fusion Engineering and Design, 2026

Preliminary engineering design of the first wall and X-point divertor of the Helios planar coil stellarator

Fusion Engineering and Design, 2026

Planar coil design for the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Equilibrium optimization of the Helios planar coil stellarator power plant

Fusion Engineering and Design, 2026

Core profile prediction and transport analysis of the Helios stellarator fusion power plant

Fusion Engineering and Design, 2026

Design of the superconducting encircling coils for Helios, the planar coil stellarator

Fusion Engineering and Design, 2026

See all 15 publications →
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