Funding round
Proxima Fusion Series A
Proxima Fusion, which works in fusion power plant design and construction in Munich, raised $18M in a Series A round announced on 9 Sep 2025. 3 firms took part. It is Proxima Fusion's third venture round on record; the one before was a Seed in Apr 2024.
$18M
Amount raised
15,000,000 EUR converted
Not disclosed
Post-money valuation
3
Investors
no lead named
Valuation
What this round says about the price
Proxima Fusion did not disclose a valuation in this round. It came 17 months after Proxima Fusion's Seed. It is 3.4% of the $515M Proxima Fusion has raised in the venture rounds on record. Proxima Fusion raised again 10 months later: a Growth round of $468M in Jul 2026, at $2.70B post-money.
Proxima Fusion's funding rounds
Proxima Fusion has 4 venture rounds on record. This one is highlighted.
Investors
Who put money in
3 firms took part; no lead investor was named.
Investors
- CDP Venture Capital
- European Innovation Council Fund
- Brevan Howard Macro Venture Fund
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, scaling operations and working capital.
- Product development
- Scaling operations
- Working capital
Comparable rounds
How it compares
8 Series A rounds in Research Institutes within a year either side disclosed an amount; the median was $24M, and this round was 75% of the median. The closest in time, other companies' Series A rounds in Research Institutes:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| CuspAI Research Institutes | 10 Sep 2025 | $100M | $520M | New Enterprise Associates and Temasek |
| Research Institutes | 18 Dec 2025 | $23M | not disclosed | Life Ventures Holding |
| Research Institutes | 19 Mar 2025 | $11M | not disclosed | St1 |
| Research Institutes | 9 Apr 2026 | $30M | $300M | Altos Ventures |
| Research Institutes | 6 Apr 2026 | $11M | not disclosed | Standard Capital |
| Research Institutes | 27 Apr 2026 | undisclosed | not disclosed | not named |
| General Intuition Research Institutes | 25 Jun 2026 | $320M | $2.30B | Khosla Ventures |
| Research Institutes | 3 Dec 2024 | $24M | not disclosed | Lowercarbon Capital and Collaborative Fund |
Sources
Where this comes from
Reported by 5 sources.
Questions
Frequently asked
How much did Proxima Fusion raise in its Series A round?
Proxima Fusion raised $18M in its Series A round, announced in Sep 2025.
Which investors took part in Proxima Fusion's Series A round?
CDP Venture Capital, European Innovation Council Fund and Brevan Howard Macro Venture Fund.
What was Proxima Fusion's valuation at the Series A round?
It was not disclosed.
How does it compare with other Series A rounds in Research Institutes?
8 Series A rounds in Research Institutes within a year either side disclosed an amount; the median was $24M, and this round was 75% of the median.
Did Proxima Fusion raise again after this round?
Yes: a Growth round in Jul 2026 of $468M at $2.70B post-money.