Series C Funded Energy Startups
Disclosed round sizes in this Series C Energy list show a pronounced skew: Redwood Materials raised $700M on 2021-07-28, which dwarfs the next-largest disc…
Disclosed round sizes in this Series C Energy list show a pronounced skew: Redwood Materials raised $700M on 2021-07-28, which dwarfs the next-largest disclosed amounts (Crusoe Energy Systems at $350M on 2022-04-21 and Zap Energy at $160M on 2022-06-07), while several entries cluster in the $20M–$100M band (e.g., Terabase Energy $130M on 2025-03-13; Radiant $100M on 2024-11-14; Liquid Wind $46M on 2024-11-21). On timing, the 47 rounds span 2021-01-26 (FreeWire Technologies) through 2025-10-07 (Base Power), and the concentration near the top of the table is notable: many of the newest disclosed rounds fall in 2024 Q4–2025 Q3 (for example, Submer $55M on 2024-10-03, char.gy $127M on 2024-06-19, and Base Power $1.0B on 2025-10-07).
Geographically, the list is broadly distributed across the US, Europe, and India (e.g., Omnidian in Seattle $87M on 2025-04-21; Carbon Clean Solutions in London $148M on 2022-05-11; Chakr Innovation in New Delhi $23M on 2025-09-22), but a smaller US-West presence shows up repeatedly in cities like Seattle/Berkeley/San Francisco (Seattle: Omnidian $87M on 2025-04-21; Zap Energy $160M on 2022-06-07; LevelTen Energy $35M on 2021-08-25). The page also contains a disclosure pattern: 7 of 47 rounds list the amount as undisclosed (e.g., Taihu Energy Valley on 2025-09-11; Infinium on 2025-01-16; Sceye on 2024-09-17), and the smallest disclosed amount is $4M for Data Gumbo on 2022-08-10.
Most recent rounds
47 shownRelated listings
Frequently asked
What’s the largest disclosed Series C round here, and how different is it from the rest of the disclosed amounts?
The largest disclosed round is Redwood Materials’ $700M on 2021-07-28, and it is substantially higher than the next-largest disclosed amounts in the table—Crusoe Energy Systems at $350M on 2022-04-21 and Zap Energy at $160M on 2022-06-07.
Are there clear time clusters among the most recent Series C energy rounds shown?
Yes. Multiple rounds cluster in late 2024 through 2025, including Omnidian ($87M) on 2025-04-21, Terabase Energy ($130M) on 2025-03-13, and Base Power ($1.0B) on 2025-10-07, with additional density in 2024 Q3–Q4 (e.g., Utility Global $53M on 2024-09-25; Submer $55M on 2024-10-03).
Do any entries stand out as unusually small compared with the rest of the disclosed rounds?
Data Gumbo at $4M on 2022-08-10 is the smallest disclosed amount in the table, sitting far below the common $20M–$100M range seen for rounds like Chakr Innovation ($23M on 2025-09-22) and Radiant ($100M on 2024-11-14).
Is there a disclosure pattern that could affect how to compare rounds by size?
There are 7 of 47 rounds with undisclosed amounts (e.g., Taihu Energy Valley on 2025-09-11 and Infinium on 2025-01-16). This means comparisons of “largest” or “median” disclosed sizes should be based only on the disclosed rows when doing quantitative analysis.
Which geography appears most frequently, and are there repeat city clusters worth targeting?
Seattle appears repeatedly with multiple Series C rounds: Omnidian raised $87M on 2025-04-21, Zap Energy raised $160M on 2022-06-07, and LevelTen Energy raised $35M on 2021-08-25. Other cities show single entries in the provided set (e.g., Barcelona: Submer $55M on 2024-10-03; London: Carbon Clean Solutions $148M on 2022-05-11).
Where do the disclosed amounts most often fall, based on the prominent examples in this list?
Disclosed amounts commonly sit between roughly $20M and $150M, with examples across the band such as Mawingu Networks ($20M on 2025-10-04), Omnidian ($87M on 2025-04-21), and Tree Energy Solutions ($152M on 2024-04-04). The two major outliers on the high end are Redwood Materials ($700M) and Crusoe Energy Systems ($350M), while the low end includes Data Gumbo at $4M.
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