What is Helion?
Helion is at the forefront of developing the world's first commercially viable fusion power plant. Leveraging patented technologies, the company aims to harness fusion energy using a fuel derived from water, offering a zero-carbon solution for 24/7 power generation. Their innovative approach seeks to replace existing energy sources with a clean, affordable, and limitless electricity supply, addressing the global demand for sustainable energy. The company's focus on practical fusion power positions it as a key player in the transition to a decarbonized economy.
How much funding has Helion raised?
Helion has raised a total of $987.1M across 6 funding rounds:
Series A
$1.5M
Private Equity
$10.6M
Series C
$10M
Series D
$40M
Series E
$500M
Series F
$425M
Series A (2014): $1.5M with participation from Mithril Capital and Y Combinator
Private Equity (2015): $10.6M led by Undisclosed
Series C (2019): $10M, investors not publicly disclosed
Series D (2020): $40M featuring Dustin Moskovitz
Series E (2021): $500M backed by Mithril Capital, Sam Altman, Dustin Moskovitz, and Capricorn Investment Group
Series F (2025): $425M with participation from Lightspeed Venture Partners, Nucor, Good Ventures, Softbank Vision Fund, Capricorn Investment Group, and Mithril Capital Management
Key Investors in Helion
Capricorn Investment Group
Capricorn Investment Group is a Palo Alto-based investment firm that manages diversified portfolios for mission-aligned families, foundations, and institutional investors, with a strong focus on sustainable, climate, and impact investments. They back companies and funds addressing global environmental and social challenges.
Mithril Capital Management
Mithril Capital is a family of long-term venture capital funds that invests and partners with teams leveraging technology to create valuable and enduring businesses, particularly in industries ripe for transformation. They support innovative ventures that drive significant change.
Lightspeed Venture Partners
Lightspeed Venture Partners is a global multistage venture capital firm that invests in early and growth-stage technology companies across sectors such as enterprise software, consumer, fintech, and infrastructure, partnering with founders from seed through IPO/M&A.
What's next for Helion?
With its latest major strategic investment, Helion is poised to accelerate the development and deployment of its fusion technology. This significant capital infusion will likely fuel advancements in prototype testing, engineering, and scaling operations, bringing the company closer to its goal of commercialization. The backing from prominent investors in the climate and technology sectors signals a strong belief in Helion's potential to revolutionize the global energy landscape and provide a critical solution for climate change.
See full Helion company page
