Funding round
new cleo Series A
new cleo, which works in nuclear reactor design and engineering in Paris, raised $148M in a Series A round announced on 30 Sep 2024, led by Inarcassa and Walter Tosto. 2 firms took part, with 1 individual investor. It is new cleo's third venture round on record; the one before was a Growth in Jun 2022.
$148M
Amount raised
Not disclosed
Post-money valuation
2
Investors
2 leads
Valuation
What this round says about the price
new cleo did not disclose a valuation in this round. It came 27 months after new cleo's Growth. It is 22% of the $670M new cleo has raised in the venture rounds on record. new cleo raised again 17 months later: a Growth round of $89M in Feb 2026.
Investors
Who put money in
Inarcassa and Walter Tosto led the round.
Lead investors
- Inarcassa new investor
- Walter Tosto new investor
Individual investors: Walter Tosto.
Comparable rounds
How it compares
25 Series A rounds in Renewable energy companies within a year either side disclosed an amount; the median was $18M, and this round was 8.2 times the median. The closest in time, other companies' Series A rounds in Renewable energy companies:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Renewable energy companies | 13 Sep 2024 | $62M | not disclosed | Energy Impact Partners |
| Renewable energy companies | 3 Sep 2024 | $17M | not disclosed | not named |
| Renewable energy companies | 10 Sep 2024 | $15M | not disclosed | 92 Ventures and ARMADA Investment |
| Renewable energy companies | 11 Sep 2024 | $14M | not disclosed | Atomico |
| Pacific Fusion Renewable energy companies | 25 Oct 2024 | $900M | not disclosed | General Catalyst |
| Renewable energy companies | 23 Oct 2024 | $6.0M | not disclosed | HMC Capital and BlueScopeX |
| Renewable energy companies | 1 Aug 2024 | $5.4M | $34M | Spectrum Impact |
| Renewable energy companies | 27 Jun 2024 | $34M | not disclosed | AP Ventures |
Sources
Where this comes from
Reported by 3 sources.
Questions
Frequently asked
How much did new cleo raise in its Series A round?
new cleo raised $148M in its Series A round, announced in Sep 2024.
Who led new cleo's Series A round?
Inarcassa and Walter Tosto led it.
What was new cleo's valuation at the Series A round?
It was not disclosed.
How does it compare with other Series A rounds in Renewable energy companies?
25 Series A rounds in Renewable energy companies within a year either side disclosed an amount; the median was $18M, and this round was 8.2 times the median.
Did new cleo raise again after this round?
Yes: a Growth round in Feb 2026 of $89M.