Helion Energy

Fusion Machine Developer

Projects: 5 Funding (Investment): 8 Funding (Nondilutive): 3 Jobs: 107

helionenergy.com

Founding Year

2013

Location

🇺🇸 Everett, Washington, United States

Company Founders

John Slough

Chris Pihl

George Votroubek

David Kirtley

Leadership

George Votroubek, Principal Scientist

David Kirtley, CEO

Chris Pihl, CTO

Helion is a fusion machine developer pursuing the field-reversed configuration (FRC) path to fusion energy. Helion has built and operated a number of FRC machines and is currently building Polaris, an FRC with the stated goal of generating electricity from fusion reactions.

Projects

FEP

2018 - Present

IPA

2005 - 2012

Polaris

Description

Polaris is Helion's seventh-generation prototype device. The project has been in development since 2021. The field reversed configuration device is designed to be 19 meters long.

Trenta

Description

Trenta is Helion's sixth-generation prototype device. The field reversed configuration device has a total length of 15 meters.

In 2020, the Trenta device was able to achieve temperatures of 9 keV or 100 million degrees Celsius.

Venti

Funding Received (Investment)

January 28, 2025

roundSeries F

$425,000,000

FundersNucor Capricorn Investment Group

+ 3 More

AnnouncementSeries F

September 27, 2023

roundNucor Strategic

$35,000,000

FundersNucor

AnnouncementNucor Strategic

November 5, 2021

roundSeries E

$500,000,000

AnnouncementSeries E

September 3, 2020

roundSeries D

$40,000,000

AnnouncementSeries D

January 1, 2019

roundSeries C

$10,000,000

FundersCapricorn Investment Group

AnnouncementSeries C

July 6, 2015

roundSeries B

$10,614,202

FundersMithril Capital Management Capricorn Investment Group

Announcement

August 12, 2014

roundSeries A

$1,499,986

FundersMithril Capital Management Y Combinator (YC)

AnnouncementSeries A

August 9, 2014

roundSeed

$120,000

FundersY Combinator (YC)

Announcement

Funding Received (Nondilutive)

September 10, 2025

programINFUSE

FundersFusion Energy Sciences (FES)

AnnouncementINFUSE: Study of field reversed configuration stability during super-Alfvénic acceleration and translation via hybrid kinetic simulations

July 25, 2023

programINFUSE

FundersFusion Energy Sciences (FES)

AnnouncementINFUSE: Nonlinear kinetic simulation study of non-equilibrium and merging FRCs

September 30, 2015

programALPHA

$3,971,263

FundersAdvanced Research Projects Agency-Energy (ARPA-E)

AnnouncementALPHA: Compression of FRC Targets for Fusion

Jobs

Senior Procurement Specialist

Helion Energy

🇺🇸 Everett, Washington, United States

Business

Full-time

On-site

Found a month ago

Principal Plasma Data Scientist

Helion Energy

🇺🇸 Everett, Washington, United States

Physics

Full-time

On-site

Found 3 months ago

Senior Network Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Software Engineering

Full-time

On-site

Found 3 months ago

Mechanical Engineering Manager, Modules

Helion Energy

🇺🇸 Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 2 months ago

Principal Nuclear Materials Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Nuclear Engineering

Full-time

On-site

Found 3 months ago

R&D Manager - LabVIEW Controls Systems

Helion Energy

🇺🇸 Everett, Washington, United States

Software Engineering

Full-time

On-site

Found 3 months ago

Principal Electrical Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Electrical Engineering

Full-time

On-site

Found 3 months ago

Technical Training & Learning Development Partner

Helion Energy

🇺🇸 Everett, Washington, United States

Communications

Full-time

On-site

Found 13 days ago

Senior Computational Plasma Scientist - MHD

Helion Energy

🇺🇸 Everett, Washington, United States

Systems EngineeringPhysics

Full-time

On-site

Found 8 days ago

Integration and Test Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 3 months ago

Supplier Development Engineer, Mechanical

Helion Energy

🇺🇸 Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 3 months ago

Senior Materials Science Manager

Helion Energy

🇺🇸 Everett, Washington, United States

Materials

Full-time

On-site

Found 4 days ago

Senior Test Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Quality & Testing

Full-time

On-site

Found 3 months ago

Director of Experimental Science

Helion Energy

🇺🇸 Everett, Washington, United States

PhysicsSystems Engineering

Full-time

On-site

Found 19 days ago

People Operations Coordinator (Contract)

Helion Energy

🇺🇸 Everett, Washington, United States

People & HR

Contract

On-site

Found 2 days ago

Principal Electrical Engineer - RF

Helion Energy

🇺🇸 Everett, Washington, United States

Electrical Engineering

Full-time

On-site

Found 3 months ago

Technical Program Manager - HERCULES

Helion Energy

🇺🇸 Everett, Washington, United States

Project ManagementSystems Engineering

Full-time

On-site

Found 3 months ago

Materials Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Materials

Full-time

On-site

Found 8 days ago

Power Electronics Engineer

Helion Energy

🇺🇸 Everett, Washington, United States

Electrical Engineering

Full-time

On-site

Found 3 months ago

Senior Mechanical Engineer, Plasma Diagnostics

Helion Energy

🇺🇸 Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 25 days ago

See all jobs →

Get Fusion Job Alerts

New fusion energy jobs delivered to your inbox.