Gold H2, a climate tech energy firm, has achieved a significant industry breakthrough by producing 'bio-stimulated' hydrogen directly from the subsurface without the need for drilling, electrolysis, or energy-intensive surface facilities. The field trial, conducted in California's San Joaquin Basin, demonstrated the effectiveness of leveraging microbiology and existing infrastructure to produce clean hydrogen. With impressive results showing 40% hydrogen in the gas stream and 400,000 ppm of hydrogen in produced gases, this approach represents a new blueprint for decarbonisation. California's depleted oilfields hold the potential to yield a substantial amount of low-carbon hydrogen, with estimated production costs below $0.50/kg. This innovative solution not only offers a scalable and affordable clean energy option but also presents a game-changing opportunity for decarbonising heavy industry, power grids, and economies globally. Investors and advisors view this breakthrough as a leap toward impactful climate action at scale, providing a promising roadmap for a sustainable energy future.