Top 10 Energy Capital Raises and Investors in the U.S. – September 16th – 30th, 2025

Several interesting transactions closed in the Energy sector over the past two weeks. If you would like more info on these deals or would like to discuss the capital raising market for your company, please contact me.

PE Growth/Expansion

1. 1. Flatiron Energy, energy storage construction services that develops utility-scale energy storage projects, received $540 million of development capital.
   2. Nova Compression, natural gas compression and gas processing services catering to exploration and production companies, received $325 million of development capital from Orion Infrastructure Capital.

PIPE

3. 3. NEO Battery Materials, for developing silicon anode materials for lithium-ion batteries in electric vehicles, electronics, and energy storage systems, received approximately CAD 5.5 million of development capital.

Merger/Acquisitions

4. 4. Bedrock Production, an energy production company based in Houston, Texas, company for oil and gas production activities aimed at supporting efficient resource development and transportation, was acquired by BKV for $370 million.
   5. BW Kazakhstan Holdings, pre-commissioning and pre-commissioning cleaning services intended to help energy sectors including oil and gas, petrochemical, power and renewable in the effective start-up of plant systems, was acquired.

Later Stage VC

6. 6. WeaveGrid, an electrification software that connects electric vehicles to the grid, raised a venture funding from LG Technology Ventures.
   7. Encore Energy, an oil and gas exploration company headquartered in Miami, Florida, specializes in providing quality drilling prospects consisting of lower risk, high probability of success and in-field development of crude oil and natural gas, enabling clients to help with minimizing impact and maximizing efficiency, raised $1.38 million of venture funding.

Accelerator/Incubator

8. 8. MicroEra Power, thermal energy storage systems for decarbonization and cost optimization purposes, joined Wells Fargo Innovation Incubator as a part of Resiliency-Focused Cohort and received $250,000 in funding in the form of grant.
   9. Sora Fuel, climate technology products for affordable, carbon-negative drop-in systems, joined Shell GameChanger on September 23, 2025 and received $250,000 in funding.

Seed Round

10. 10. Airobes, biotechnology systems that captures carbon and convert it into valuable biomaterials, raised $50,000 of seed funding in the form of convertible debt.

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Tina Vital

Managing Director

Please contact me if you have any questions or would like to discuss your capital raise:

Email: tvital@castleplacement.com

(C) (917) 432-8474

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Sources: Information on this page was derived from a variety of sources including Bloomberg, Company Websites, Crunchbase, PitchBook and other news outlets. Castle Placement® does not warrant or guarantee this information, nor makes any representations as to the accuracy of the information. For more Risks, see CPGO Risks and Disclaimers.