Helion Energy

Deals and links 3

• Lightspeed Venture Partners invests in Helion Energy New investor in Helion's $425M Series F (Jan 2025). Completed.

  “The oversubscribed and upsized round had participation from new investors, including Lightspeed Venture Partners, SoftBank Vision Fund 2, and a major university endowment, and existing investors including Sam Altman, Mithril Capital, Capricorn Investment Group, Dustin Moskovitz through Good Ventures Foundation, and Nucor.”

  ⁴helionenergy.com · checked 2026-10-10 High confidence Report a correction: Lightspeed Venture Partners invests in Helion Energy
• Microsoft offtakes from Helion Energy Signed fusion PPA (May 2023): Helion to supply Microsoft electricity from its first fusion plant, 50 MW+ targeted from 2028.

  “Helion Energy (Helion) today announced an agreement to provide Microsoft electricity from its first fusion power plant.”

  ⁵helionenergy.com · checked 2026-10-10 High confidence Report a correction: Microsoft offtakes from Helion Energy
• Constellation supplies Helion Energy Power marketer and transmission manager for Helion's first fusion plant serving Microsoft (role named in Helion's 2023 PPA announcement; signed agreement between Helion and Microsoft).

  “Constellation will serve as the power marketer and will manage transmission for the project.”

  ⁵helionenergy.com · checked 2026-10-10 High confidence Report a correction: Constellation supplies Helion Energy

Plants and sites 1

• Helion Energy owns Orion fusion power plant Fusion plant · Under construction · Malaga, WA · Under construction; land leased from Chelan County PUD, so 'owns' refers to the plant, not the land. Target online 2028, 50 MW+.
  ²helionenergy.com · checked 2026-10-10 ⁶helionenergy.com ⁷ans.org High confidence Report a correction: Helion Energy owns Orion fusion power plant

Sources 7