Beneath the Surface, Beyond the Horizon: Reimagining the Subsurface as the World's Next Energy and Sustainability Frontier

The paper — 'Beneath the Surface, Beyond the Horizon' — provides the following original analysis: • Year-on-year deployment gap tables for CCUS, geothermal, and underground hydrogen storage from 2015 to 2050, quantifying the investment shortfall at every interval• A Technology Readiness Level matrix for 14 subsurface technology domains, with deployment windows and investment priority ratings• LCOE benchmarking of EGS against gas CCGT, nuclear, and offshore wind — showing EGS reaches competitive parity by 2035–2040 following a measurable learning curve• A legacy asset repurposing analysis: 2.6 million idle wells globally, USD 500B+ in latent value awaiting reinvention• Regulatory comparison across the US, UK, EU, Norway, Australia, and Saudi Arabia