Top 10 Energy Capital Raises and Investors in the U.S. – June 1st to 30th, 2026
Several interesting transactions closed in the Energy sector over the past month. If you would like more info or would like to discuss the capital raising market for your company, please contact me.
PE Growth/Expansion
- Environ Energy, energy consulting firm that helps facility owners and decision-makers navigate through the complex and changing energy environment, received development capital from Brooke Private Equity Associates Management.
- Vesper Energy, energy storage facilities that create assets that contribute to a sustainable and decarbonized future, received development capital from GCM Grosvenor and Development Bank of Japan.
Merger/Acquisition
- Flatrock Compression, gas lift compression equipment for the energy industry, was acquired by Natural Gas Services Group for $120 million.
- SOL Components, solar mounting systems for utility-scale solar projects, was acquired by Create Energy.
Later Stage VC
- Helion, fusion energy technology that generates clean electricity through controlled nuclear fusion, raised $465 million of Series G venture funding in a deal led by Thrive Capital, putting the company’s pre-money valuation at $15.04 billion.
- Ion Storage Systems, solid-state battery platform that overcomes the limitations of conventional lithium-ion technology, raised $2 million of venture funding from TEDCO.
Early Stage VC
- Outlast Power, modular battery systems that optimize energy use and reduce demand charges, raised $4.5 million of venture funding from nvp capital and other investors.
- White Rhino Energy, energy exploration platform for increasing recoverable reserves and enhancing production, raised $55.16 million of venture.
Seed Round
- Critical Energy, modular heat-to-electricity power generation systems for grid-scale energy production, raised $22 million of seed funding in a deal led by Upfront Ventures and Susa Ventures, putting the company’s pre-money valuation at $22.5 million.
- Transformative American Resources, energy infrastructure development services that construct and maintain systems supporting sustainable energy across the United States, raised $27 million of seed funding.
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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.
