Stellarator fusion power plants, built as an integrator with a bespoke supplier network; first 400 MW plant targeted for 2034
Type One Energy, founded in 2019 and based in Knoxville, Tennessee, is developing stellarator fusion power plants. Rather than manufacture in-house, it acts as an integrator: it designs the plant and many components and has a bespoke supplier network build them, which CEO Christofer Mowry, who previously ran a large nuclear manufacturing company, says cuts the capital needed to commercialize fusion by an order of magnitude. Its first two fusion devices will be built at the Tennessee Valley Authority's Bull Run site, AECOM is engineering Infinity Two, its first 400 MW commercial plant targeted for 2034, and it licenses Commonwealth Fusion Systems' high-temperature superconducting magnets. On October 6, 2026 it announced a $200M Series B co-led by Breakthrough Energy Ventures and Clutterbuck Capital, with Lowercarbon Capital, Siemens Energy Ventures and SiteGround Capital, after an $82.5M extended earlier round in 2024; the CEO says the round covers about half the cost of the first plant.
Energy📍 Knoxville, TNFounded 2019
Current Valuation
Private
PRIVATE
IPO Outlookprivate
Is Type One Energy going public?
No. Type One Energy is private and has not filed to go public. There is no S-1 on file.
What is Type One Energy's valuation in 2026?
No confirmed valuation is on record for Type One Energy. The roster shows funding and investors where they are public; it does not estimate a mark.
Has Type One Energy filed an S-1?
No public S-1 is on file for Type One Energy.
Who are Type One Energy's investors?
Type One Energy's investors include Breakthrough Energy Ventures, Clutterbuck Capital, Lowercarbon Capital, Siemens Energy Ventures, SiteGround Capital.
How much has Type One Energy raised?
Type One Energy has raised $282.5M in total across 2 disclosed rounds, most recently a Series B of $200M in Oct 2026.
Is Type One Energy publicly traded — can you buy Type One Energy stock?
No. Type One Energy is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for Type One Energy on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Company Profile
CEO
Christofer Mowry
Founded
2019
HQ
Knoxville, TN
Total Raised
$282.5M
Growth
Integrator model — designs the plant and components, a bespoke supplier network builds them; partners include TVA (Bull Run site), AECOM (Infinity Two engineering) and Commonwealth Fusion Systems (magnet license)
Last Round
Series B — $200M (Oct 2026) · Lead: Breakthrough Energy Ventures, Clutterbuck Capital
IPO Status
private
Fundraising Status
Series B · $200M · this month
privateTotal raised $282.5M2 disclosed rounds
Growth & Valuation
Capital raised per round
Charts built from publicly disclosed funding rounds and revenue estimates. Approximate, not real-time, not investment advice.
Funding History
Round
Amount
Date
Lead Investor
Post-Money
Series B
$200M
Oct 2026
Breakthrough Energy Ventures, Clutterbuck Capital
—
Series A (extended)
$82.5M
Jul 2024
—
—
Talent Signal
Hiring data for Type One Energy has not been collected yet — the monthly talent sweep hasn't reached this company. Check back soon.
Investors
Breakthrough Energy Ventures · Clutterbuck Capital · Lowercarbon Capital · Siemens Energy Ventures · SiteGround Capital
Products
Infinity Two — first commercial fusion power plant (400 MW), targeted online by 2034; engineering by AECOM
First two fusion devices to be built at the Tennessee Valley Authority's Bull Run site
Stellarator design using high-temperature superconducting magnet technology licensed from Commonwealth Fusion Systems
Competitors
Commonwealth Fusion Systems
EnergyFusionClimate TechDeep TechRecently Funded
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of recent date. Refreshed quarterly.