Wire · operational-macro
Is Geologic Thermal Energy Storage (GeoTES) the Holy Grail of Energy for Data Centers?
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Fusion42 · 12 October 2026 · Fusion42 review
Geologic Thermal Energy Storage (GeoTES) stores solar heat in depleted California oil fields and aims to provide long-duration power to data centers, potentially addressing California's high electricity cost and rising data center energy demand. Though backed by national lab science and a DOE-supported pilot, large-scale claims remain unproven.
This Wire brief sits within Fusion42's coverage of Climate Tech.
◆ ◆ The Wire takeaway
You must watch solar-charged thermal storage in old oil fields closely as it promises to extend power availability far beyond battery limits, opening opportunities for data centre supply innovation, though current evidence still needs scaling validation.
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1 source · 12 Oct 2026
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