Funding round
Valar Atomics Seed
Valar Atomics, which works in nuclear reactor design and construction in Hawthorne, raised $19M in a Seed round announced on 20 Feb 2025, led by Riot Ventures. 5 firms took part. It is Valar Atomics' first venture round on record.
$19M
Amount raised
Not disclosed
Post-money valuation
5
Investors
1 lead
Valuation
What this round says about the price
Valar Atomics did not disclose a valuation in this round. It is Valar Atomics' first venture round on record, 83 years after it was founded in 1942. It is 1.2% of the $1.60B Valar Atomics has raised in the venture rounds on record. Valar Atomics raised again 9 months later: a Series A round of $130M in Nov 2025. Its next priced round, a Growth in Apr 2026, valued it at $2.00B.
Valar Atomics' funding rounds
Valar Atomics has 4 venture rounds on record and 1 other deal. This one is highlighted.
- Seed this round 20 Feb 2025, led by Riot Ventures $19M
- Series A 10 Nov 2025, led by Snowpoint Ventures, Day One Ventures and Dream Ventures $130M
- Growth 2 Apr 2026 $450M$2.00B post-money
- Series B 3 Aug 2026, led by Sequoia Capital $1.00B$6.00B post-money
- Debt not a venture round 4 Aug 2026, led by Erebor Bank $200M
Investors
Who put money in
Riot Ventures led the round with 4 other firms.
Lead investor
- backs 19 venture-backed companies new investor
Also in the round
- backs 80 venture-backed companies new investor
- backs 115 venture-backed companies new investor
- backs 54 venture-backed companies new investor
- backs 5 venture-backed companies new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development.
- Product development
Comparable rounds
How it compares
7 Seed rounds in Electric Supplies & Power Generation within a year either side disclosed an amount; the median was $6.5M, and this round was 2.9 times the median. The closest in time, other companies' Seed rounds in Electric Supplies & Power Generation:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Electric Supplies & Power Generation | 11 Mar 2025 | $20M | not disclosed | Clean Energy Ventures |
| Electric Supplies & Power Generation | 10 Mar 2025 | undisclosed | not disclosed | not named |
| Electric Supplies & Power Generation | 12 Mar 2025 | undisclosed | not disclosed | not named |
| Electric Supplies & Power Generation | 9 Dec 2024 | $600K | not disclosed | Rajesh Advani |
| Electric Supplies & Power Generation | 28 May 2025 | $2.5M | not disclosed | Lemniscap |
| Electric Supplies & Power Generation | 16 Jul 2024 | $6.5M | not disclosed | Failup Ventures and Uber Technologies |
| Electric Supplies & Power Generation | 12 Jul 2024 | undisclosed | not disclosed | Ecozen |
| Electric Supplies & Power Generation | 20 May 2024 | $6.5M | not disclosed | Munich Re Ventures and Climactic |
Sources
Where this comes from
Reported by 5 sources. The deal data marks this round as not yet confirmed by an official announcement. Unconfirmed
Questions
Frequently asked
How much did Valar Atomics raise in its Seed round?
Valar Atomics raised $19M in its Seed round, announced in Feb 2025.
Who led Valar Atomics' Seed round?
Riot Ventures led it, with AlleyCorp, Initialized, Day One Ventures and Steel Atlas.
What was Valar Atomics' valuation at the Seed round?
It was not disclosed.
How does it compare with other Seed rounds in Electric Supplies & Power Generation?
7 Seed rounds in Electric Supplies & Power Generation within a year either side disclosed an amount; the median was $6.5M, and this round was 2.9 times the median.
Did Valar Atomics raise again after this round?
Yes: a Series A round in Nov 2025 of $130M.