Geothermal energy is one of the largest energy sources on Earth — and one of the most overlooked. Beneath our cities lies a vast reservoir of heat, continuously generated inside the planet. Unlike solar or wind, this energy is constant, weather-independent, and available day and night. Yet geothermal remains marginal in most national energy strategies. In this video, we explore why geothermal energy has been largely ignored, how it works, and what limits its adoption — not in theory, but in practice. Geothermal energy offers stable, low-carbon power. Stable power could strengthen energy security. But high upfront costs, drilling risks, and policy barriers slow deployment. This mismatch between potential and reality is shaping how cities plan their energy futures — and how dependent they remain on fossil fuels.

What you’ll learn in this epsidoe of my podcast: What geothermal energy really is and where it comes from Why Earth’s internal heat represents such a large energy resource Why geothermal works well in some places — and not others What new technologies could change its role in urban energy systems This isn’t about promoting geothermal as a silver bullet. It’s about understanding why one of Earth’s most powerful energy sources has stayed on the sidelines — and what would be required to bring it into the center of the energy transition.

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