Clean Firm Power: Geothermal matu...
Clean Firm Power: Geothermal matures, Fusion tests the market, and the UK's Warm Homes Plan

Power Plays by Charlotte Kirk and Lucy Shaw

Episode notes

Recorded 30th January 2026. With AI, hyperscalers, and the broader ‘electrification of everything’ accelerating demand for clean, firm, and reliable power, capital markets are beginning to reopen to fund it. As speed-to-power becomes the decisive factor, strategy is moving upstream toward how electricity is secured, controlled, and delivered efficiently.

This shift shows up clearly in the week’s deal headlines - from owning and optimising dispatchable fleets, to upgrading brownfield assets, to tackling the bottlenecks that have historically constrained scale.

Together, the deals reveal a growing split in how ‘clean firm’ energy is being financed. Geothermal is being steadily de-risked across the value chain, with capital flowing into discovery, drilling, and operations. Fusion, meanwhile, is testing public markets as a frontier bet, s ... 

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