Koloma Secures Record $394M for Natural Hydrogen Exploration

Denver-based Koloma has emerged as the most well-funded natural hydrogen exploration company globally, securing $394 million in total funding through 2024-2025. The company's latest rounds include a $245 million Series B in February 2024 and a $50 million extension in October 2024, marking the largest capital raise in the nascent geologic hydrogen sector.
Backing from Tech and Energy Giants
Koloma's investor syndicate reads like a who's who of climate tech investment. Breakthrough Energy Ventures (Bill Gates' climate fund) led early rounds, with Amazon's Climate Pledge Fund and United Airlines' Sustainable Flight Fund joining subsequent raises. The October 2024 extension brought in Mitsubishi Heavy Industries and Japan's Osaka Gas, signaling strong international interest in natural hydrogen.
The Natural Hydrogen Opportunity
Unlike "green hydrogen" produced through electrolysis or "grey hydrogen" from natural gas, geologic hydrogen occurs naturally underground through processes like serpentinization (water reacting with iron-rich rocks) and radiolysis (natural radiation splitting water molecules). If successfully extracted at scale, natural hydrogen could provide clean energy at a fraction of the cost of manufactured alternatives.
Strategic Focus Areas
While details remain closely guarded, Koloma is believed to be exploring prospects across multiple U.S. states, focusing on regions identified by recent USGS mapping efforts. The company has remained quiet about specific drilling locations and timelines, maintaining operational security as it advances from exploration to potential production.
Industry Impact
Koloma's massive funding has validated the natural hydrogen sector and triggered a global exploration rush. The company also received a $900,000 U.S. Department of Energy grant for enhanced hydrogen production research, further demonstrating government support for the technology. As Koloma advances toward commercial production, the entire geologic hydrogen industry watches closely—success could unlock a multi-trillion dollar clean energy resource.
Sources: Based on reports from S&P Global, Hydrogen Insight, and Canary Media (2024-2025)

