Funded Energy Startups in United States
Across these 50 recent energy rounds, the largest disclosed amount is Spearmint Energy’s $325M (2026-06-23), which stands out against many other disclosed…
Across these 50 recent energy rounds, the largest disclosed amount is Spearmint Energy’s $325M (2026-06-23), which stands out against many other disclosed checks that are far smaller (for example, $80K for Comstock on 2026-06-24 and multiple sub-$20M rounds such as NOMAD Transportable Power Systems at $7M on 2026-06-17 and Maryland Clean Energy Center at $3M on 2026-06-17). The other clear size outliers also cluster at the high end: OCI Energy raised $130M on 2026-06-22, Presidio Petroleum $350M on 2026-06-09, Cypress Creek Renewables $3.5B on 2026-06-11, and Rowan Digital Infrastructure $3.0B on 2026-05-27, while several entries list “undisclosed” amounts (e.g., AirCapture on 2026-06-24 and Quino Energy on 2026-06-24).
The timeline is tightly recent, spanning 2026-05-27 (Rowan Digital Infrastructure) through 2026-06-30 (Eos). Stage disclosure is heavily weighted toward “Series Unknown” and “undisclosed” amounts: 32 of 50 entries are labeled “Series Unknown,” and 7 of 50 entries have “undisclosed” round amounts (including AirCapture, Quino Energy, Green Bridge, and others). Geographically, Texas appears repeatedly as a hub (e.g., OCI Energy in San Antonio; Presidio Petroleum and Valor in Fort Worth; Pathway Power’s $150M in San Diego shows California is also concentrated, with multiple California entries in the same late-June window).
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Frequently asked
What are the biggest disclosed rounds in this US energy list, and are they true standouts vs the rest?
Cypress Creek Renewables at $3.5B (2026-06-11) and Rowan Digital Infrastructure at $3.0B (2026-05-27) dwarf most other disclosed rounds in the table; between them, other large checks like Spearmint Energy’s $325M (2026-06-23) and OCI Energy’s $130M (2026-06-22) are in a very different range. At the low end, Comstock shows a disclosed $80K on 2026-06-24.
How tight is the cluster in time, and what does the date edge look like for recent closing activity?
Rounds in this listing run from 2026-05-27 (Rowan Digital Infrastructure, $3.0B) to 2026-06-30 (Eos, $75M). The most recent month portion is dense in late June, with multiple closings concentrated around 2026-06-22 to 2026-06-25 (e.g., OCI Energy $130M on 2026-06-22, Spearmint Energy $325M on 2026-06-23, NextDecade $3.5B on 2026-06-25).
Are there concentrations by stage disclosure (Series Unknown vs labeled rounds) that affect how investors should screen this list?
“Series Unknown” dominates with 32 of 50 entries, including large checks such as NextDecade (2026-06-25, $3.5B) and numerous late-June rounds like Apex Clean Energy (2026-06-15, $73M). Labeled stages do appear but are a minority in this snapshot, such as Verse in Series B ($54M on 2026-06-18) and Aston Power in Series A ($20M on 2026-06-16).
Do any cities or states recur enough to suggest a regional screening shortcut?
Texas shows repeated appearances across different cities and deal sizes: OCI Energy in San Antonio (2026-06-22, $130M), Presidio Petroleum in Fort Worth (2026-06-09, $350M), and Valor in Fort Worth (2026-06-09, undisclosed), plus Vesper Energy in Irving (2026-06-01, $236M). California also repeats in the late-June window, including AirCapture (2026-06-24, undisclosed), Spearmint Energy (2026-06-23, $325M), and others like esVolta (2026-06-03, $250M).
Which entries are amount outliers on the low end or marked undisclosed, and how should that influence outreach prioritization?
Several very low disclosed amounts sit alongside much larger checks: Comstock at $80K (2026-06-24) and Virtual Peaker at $1M (2026-05-29). Separately, 7 entries have “undisclosed” round amounts (e.g., AirCapture 2026-06-24, Quino Energy 2026-06-24, and Green Bridge 2026-06-22), so follow-up may be needed before using disclosed-size heuristics.
Which recent entries within this snapshot have disclosed amounts in the same broad high/mid range that could define comparable deal sizing?
Many disclosed checks cluster in a mid-to-high band well below the $3B+ outliers but above small seed/pre-seed rounds. Examples include Spearmint Energy $325M (2026-06-23), Presidio Petroleum $350M (2026-06-09), Maxwell Power $750M (2026-06-01), and Sabanci Renewables $382M (2026-06-01), all of which are likely more comparable to each other than to the $3M-$22M range such as Maryland Clean Energy Center $3M (2026-06-17) or Gunnison Copper $22M (2026-05-27).
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