Company

Helion

Rocket Ship Rating

Rocket Ship Rating: 99 out of 100

FUSION BUILT TO POWER OUR WORLD

Also known as Helion Energy, Inc

Clean energy & storage
Climate positive
Deeptech
Hardware

Status: Operatingas of 2026-09-21
Business model: B2B
Headquarters: Everett, WA, United States
Founded: 2013
Employees: With a headcount topping 800Source (opens in a new tab)
Customers: industry's first two customers: Microsoft and Nucor
Legal name: Helion Energy, Inc

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Record updated 21 September 2026

About

Our mission is to fully satisfy the world's need for clean abundant energy.

Funding snapshot

Total raised: $890MSum of rounds, as of 2026-09-21Source (opens in a new tab)
Latest round: Series D+, $465M2026-06-04

Funding rounds

Series D+: $465M2026-06-04, Company stated, post-money $15.5B
Series D+: $425M2025-01-28, Company stated
Round, 2015: $10.6M2015-06-19, SEC form D sold, 6 investors
Round, 2014: $1.5M2014-07-29, SEC form D sold, 3 investors

Products

Hardware: Orion
Hardware: Polaris