Series A Funded Energy Startups
Among the disclosed Series A rounds in this energy set (50 total rows), the largest disclosed amount is Valar Atomics at $130M on 2025-11-11, which dwarfs…
Among the disclosed Series A rounds in this energy set (50 total rows), the largest disclosed amount is Valar Atomics at $130M on 2025-11-11, which dwarfs most other disclosed rounds that cluster in the ~$10M–$50M range (for example $80M on 2025-11-23 by Amperesand and $50M on 2025-11-15 by Exowatt and on 2025-04-02 by Aetherflux). A second pattern is temporal: many rounds land in a late-2025 window, with multiple entries during November 2025 (from 2025-11-30’s Junhao Power through 2025-11-05’s Xingchen New Energy). Geography also clusters: California appears repeatedly (e.g., Aetherflux 2025-04-02 in San Carlos, Capture6 2025-03-11 in Berkeley, Tandem PV 2025-03-04 in Stanford, Tyba 2025-02-06 in San Francisco, and Zitara 2024-12-04 in Oakland), while Europe and Asia show parallel density through dates spanning 2024-11-19 (Prism Worldwide) to 2025-11-30 (Junhao Power). On disclosure, 9 of 50 rows list amounts as “undisclosed,” versus the rest with disclosed USD figures.
Most recent rounds
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Frequently asked
What’s the largest disclosed Series A amount in this energy list, and how far above the rest is it?
Valar Atomics raised the largest disclosed round at $130M on 2025-11-11. The next-largest disclosed amounts visible are $80M (Amperesand, 2025-11-23) and $50M (Exowatt, 2025-11-15; Aetherflux, 2025-04-02), so $130M stands out as the only disclosed round in the $100M+ range.
Which rounds are the smallest disclosed amounts, and do they form a pattern near the late-2025 cluster?
The smallest disclosed USD figure is $2M, shown by BM2Solar (2025-07-03) and Tan90 (2025-05-20). Those dates sit within the broader late-2025 activity window, but the overall list also includes several mid-single-digit rounds (e.g., ONiO $6M on 2025-06-18 and Resilco $6M on 2025-03-19).
How dense is the list in the most recent period (last ~90 days) and when does that most recent activity begin?
The most recent row date is 2025-11-30 (Junhao Power), and the list continues through 2025-11 with multiple entries (e.g., enshift $21M on 2025-11-25; Amperesand $80M on 2025-11-23; Valar Atomics $130M on 2025-11-11). By contrast, the older end of the shown window starts at 2024-11-19 (Prism Worldwide).
Are there city or geography clusters in this set, especially in California?
California is repeatedly represented across different metro areas: Aetherflux is in San Carlos (2025-04-02, $50M), Capture6 is in Berkeley (2025-03-11, $28M), Tandem PV is in Stanford (2025-03-04, $50M), Tyba is in San Francisco (2025-02-06, $14M), and Zitara is in Oakland (2024-12-04, $17M). That multi-city recurrence is stronger than in single-location hubs like Switzerland or Norway, which appear once each (e.g., enshift in Baar, 2025-11-25; ONiO in Oslo, 2025-06-18).
What disclosure mix appears in this list, and are there any levels of disclosed funding that dominate?
“Undisclosed” amounts appear in 9 of 50 rows (e.g., Junhao Power on 2025-11-30; Plentify on 2025-11-20; Quantified Energy Labs on 2025-05-20). Among disclosed rounds, many fall between $10M and $50M (e.g., Quino Energy $10M on 2025-11-12; Fourth Power $20M on 2025-09-18; Standard Nuclear $42M on 2025-06-11), while $80M+ and $100M+ are much rarer (Amperesand $80M; Valar Atomics $130M).
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