GoKawiilConstellation plans $4.3 billion uprate across 11 nuclear reactors
Constellation announced it will spend more than $4.3 billion to boost output at 11 of its nuclear reactors through a process called a power uprate, which involves upgrading equipment like turbines, pumps and transformers to handle more steam from enriched fuel. The company says the added capacity will generate enough electricity to power roughly 700,000 US homes.
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The move reflects a broader resurgence in nuclear uprates after a decade-long slowdown, driven by surging electricity demand from AI and data centers rather than the natural-gas competition that once discouraged such investments. Google's interest in buying power from Constellation suggests tech companies are increasingly financing nuclear capacity expansion to secure reliable, low-carbon electricity for their operations.
- Nuclear 'power uprates' upgrade existing reactors to produce more electricity without building new plants.
- US uprate approvals fell from over 80 in 2001-2010 to just 33 in 2011-2020, but demand from AI is reviving interest.
- Constellation's $4.3 billion plan across 11 reactors would add capacity equivalent to powering about 700,000 homes.
Source: technologyreview.com — Casey Crownhart, 2026-10-15
Published there as: “How much more can nuclear power plants give?”
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