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Type One Energy raises $200M with backing from Siemens Energy for fusion technology development.

PRIVATEOct 06, 2026

Amount Raised

$200 Million

Round Type

Venture

KnoxvilleEnergyRenewable EnergyBiomass Energy

Investors

SiteGround CapitalLowercarbon CapitalSiemens EnergyBreakthrough Energy VenturesClutterbuck CapitalSiemens Energy Ventures

Description

Type One Energy has secured $200 million in funding with support from Siemens Energy. The capital will support the company's fusion energy technology initiatives. Siemens Energy's backing underscores confidence in Type One Energy's fusion approach. The funding strengthens Type One Energy's position in the advanced energy sector.

Quick answer

Type One Energy raised $200 Million in a funding round, dated October 6, 2026. Investors: SiteGround Capital, Lowercarbon Capital, Siemens Energy, Breakthrough Energy Ventures, Clutterbuck Capital and Siemens Energy Ventures. Type One Energy is based in Knoxville, Tennessee, United States.

How much did Type One Energy raise?
Type One Energy raised $200 Million in a funding round on October 6, 2026.
Who invested in Type One Energy?
SiteGround Capital, Lowercarbon Capital, Siemens Energy, Breakthrough Energy Ventures, Clutterbuck Capital and Siemens Energy Ventures are named as investors in this round.
What does Type One Energy do?
Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world.
Where is Type One Energy based and how big is it?
Type One Energy is based in Knoxville, Tennessee, United States. Fundz records about 237 employees.
Who are the decision-makers at Type One Energy?
Fundz holds 1 contact at Type One Energy. Names and contact details are shown to Fundz members.

Source: Fundz verified event record.

Who else raised in Energy and Renewable Energy around the same time

Companies in the same sectors as Type One Energy that raised within 45 days of this round, from Fundz verified event records.

  • Exus Renewables raised $345M (Debt Financing) on November 12, 2026.
  • ACEN raised $37M on November 6, 2026.
  • Legence raised $10M on November 1, 2026.
  • Emvolon and Montauk Renewables raised $22M (Series A) on October 27, 2026.
  • energyRe raised $815M on October 12, 2026.
  • Zelestra raised $350M (Debt Financing) on October 7, 2026.

Who to call at Type One Energy, and when

A new round usually means Type One Energy is about to hire and buy. The teams that reach out first get the meeting.

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Company Information

Company

Type One Energy

Location

Knoxville, Tennessee, United States

About

Type One Energy Group is mission-driven to provide sustainable, affordable fusion power to the world. The company was formed in 2019 by a team of globally-recognized fusion scientists with a strong track record of building state-of-art stellarator fusion machines, together with veteran business leaders experienced in successfully scaling companies and commercializing energy technologies. Type One Energy applies proven advanced manufacturing methods, modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk, shortest-schedule path to a fusion power plant over the coming decade, using a partner-intensive and capital-efficient strategy.

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Type One Energy raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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