Geothermal and Storage Outpace Advanced Nuclear

The real competitive edge of geothermal and long duration storage is speed, not raw power density. Hyperscalers buying 24, 7 clean power often care first about getting megawatts on a site fast enough to keep new GPU clusters from sitting idle, and geothermal wells or storage projects can usually move through existing state and utility permitting tracks, while advanced nuclear still runs through a specialized federal licensing process that is only now being modernized.

• Advanced nuclear is still waiting on a clearer federal lane. The NRC says its optional Part 53 framework for advanced reactors is expected to be finalized on March 27, 2026, with effectiveness on April 27, 2026. That is progress, but it also shows the licensing path is still being built as companies like Aalo try to commercialize.
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• Advanced geothermal is already signing real power contracts. Fervo signed 320 MW of PPAs with Southern California Edison in June 2024, and its earlier Google deal tied geothermal output to the Nevada grid serving Google data centers. That makes geothermal feel closer to normal power procurement than a first of a kind reactor build.
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• Long duration storage can also clear regulatory hurdles more easily because it is usually approved as grid equipment, not as a new fuel based generation plant. Recent examples include Form Energy winning California support for a 5 MW, 500 MWh multi day project, and Google pairing Form technology with a Minnesota data center power plan.
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The next few years are likely to split the market in two. Geothermal and storage will win contracts where the buyer needs cleaner power on a short clock, while nuclear will be reserved for campuses that eventually need a denser, steadier block of hundreds of megawatts and are willing to wait for a harder permitting path to unlock it.