Helion Energy

Helion Energy, Inc.

Fusion Machine Developer

Projects: 5 Funding (Investment): 9 Funding (Nondilutive): 3 Jobs: 107 Articles: 2

Founding Year

2013

Location

Everett, Washington, United States

Company Founders

Chris Pihl

David Kirtley

George Votroubek

John Slough

Leadership

David Kirtley, CEO

Chris Pihl, CTO

George Votroubek, Principal Scientist

Website

helionenergy.com

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.

Articles

September 2025 Fusion Equity Investment Update

September 01, 2025 Investment

July 2025 Fusion Equity Investment Update

July 14, 2025 Investment

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)

June 3, 2026

roundSeries G

$465,000,000

FundersCapricorn Investment Group Lightspeed

+ 9 More

AnnouncementSeries G: https://www.helionenergy.com/newsroom/helion-raises-465-million-series-g-funding-round-to-meet-surging-global-demand-for-power

January 27, 2025

roundSeries F

$425,000,000

FundersNucor Capricorn Investment Group

+ 3 More

AnnouncementSeries F

September 26, 2023

roundNucor Strategic

$35,000,000

FundersNucor

AnnouncementNucor Strategic

November 4, 2021

roundSeries E

$500,000,000

AnnouncementSeries E

September 2, 2020

roundSeries D

$40,000,000

AnnouncementSeries D

December 31, 2018

roundSeries C

$10,000,000

FundersCapricorn Investment Group

AnnouncementSeries C

July 5, 2015

roundSeries B

$10,614,202

FundersMithril Capital Management Capricorn Investment Group

Announcement

August 11, 2014

roundSeries A

$1,499,986

FundersMithril Capital Management Y Combinator (YC)

AnnouncementSeries A

August 8, 2014

roundSeed

$120,000

FundersY Combinator (YC)

Announcement

Funding Received (Nondilutive)

September 9, 2025

programINFUSE

FundersFusion Energy Sciences (FES)

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

July 24, 2023

programINFUSE

FundersFusion Energy Sciences (FES)

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

September 29, 2015

programALPHA

$3,971,263

FundersAdvanced Research Projects Agency-Energy (ARPA-E)

AnnouncementALPHA: Compression of FRC Targets for Fusion

Jobs

Senior Production Controller

Helion Energy

Everett, Washington, United States

ManufacturingSupply Chain

Full-time

On-site

Found 14 hours ago

Mechanical Engineer, Fluids

Helion Energy

Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 2 days ago

Principal Applied Plasma Data Scientist

Helion Energy

Everett, Washington, United States

PhysicsSoftware Engineering

Full-time

On-site

Found 2 days ago

Senior Applied Plasma Data Scientist

Helion Energy

Everett, Washington, United States

PhysicsSoftware Engineering

Full-time

On-site

Found 2 days ago

Senior Manager, Software Engineering, Plant Control

Helion Energy

Everett, Washington, United States

Software EngineeringElectrical Engineering

Full-time

On-site

Found 3 days ago

Category Manager, Technical Equipment

Helion Energy

Everett, Washington, United States

Supply Chain

Full-time

On-site

Found 6 days ago

Inventory Control Technician

Helion Energy

Everett, Washington, United States

Supply ChainTechnician

Full-time

On-site

Found 6 days ago

Procurement Manager

Helion Energy

Everett, Washington, United States

Supply Chain

Full-time

On-site

Found 6 days ago

CMM Operator

Helion Energy

Everett, Washington, United States

Quality & TestingTechnician

Full-time

On-site

Found 15 days ago

Principal Manufacturing Engineer

Helion Energy

Everett, Washington, United States

Manufacturing

Full-time

On-site

Found 15 days ago

Quality Inspector, Receiving and MRB

Helion Energy

Everett, Washington, United States

Quality & Testing

Full-time

On-site

Found 15 days ago

Senior Supplier Development Engineer, Mechanical

Helion Energy

Everett, Washington, United States

Supply ChainMechanical Engineering

Full-time

On-site

Found 15 days ago

Manager of Multistate Public Affairs

Helion Energy

Everett, Washington, United States

Communications

Full-time

Remote

Found 16 days ago

Mechanical Engineer, Vacuum Systems

Helion Energy

Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 21 days ago

Security Officer

Helion Energy

Everett, Washington, United States

Safety

Full-time

On-site

Found 21 days ago

Senior Mechanical Engineer, Vacuum Systems

Helion Energy

Everett, Washington, United States

Mechanical Engineering

Full-time

On-site

Found 21 days ago

LabVIEW Controls Engineer

Helion Energy

Everett, Washington, United States

Electrical Engineering

Full-time

On-site

Found a month ago

Director of Talent Acquisition

Helion Energy

Everett, Washington, United States

People & HR

Full-time

On-site

Found a month ago

Director of Engineering, Modules

Helion Energy

Everett, Washington, United States

Systems Engineering

Full-time

On-site

Found a month ago

Principal Operations Systems Engineer

Helion Energy

Everett, Washington, United States

Systems Engineering

Full-time

On-site

Found a month ago

See All Jobs

Get Fusion Job Alerts

New fusion energy jobs delivered to your inbox.