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In 2026, the convergence of artificial intelligence scaling, grid constraints, and a historic nuclear revival is reshaping the energy landscape. Global data center electricity consumption is projected to exceed 1,000 TWh this year, with AI workloads doubling power demands per rack. In response, technology giants including Microsoft, Amazon, Google, and Meta are pivoting aggressively to small modular reactors (SMRs) for baseload clean energy. Collectively, these companies have committed over $400 billion to nuclear-powered data center infrastructure, marking one of the most consequential energy-technology-finance intersections of the decade.
The AI Energy Crisis Driving the Nuclear Pivot
AI training clusters require 24/7 carbon-free baseload power at unprecedented scale. A single AI-focused data center now demands 80 megawatts (MW), up from 32 MW for standard facilities. According to Morgan Stanley Research, U.S. data centers will need 74 GW of power by 2028, but only 25 GW is currently accessible, creating a 49 GW shortfall. This gap threatens AI infrastructure expansion and has sent technology companies scrambling for reliable, clean energy sources. The AI data center power crisis has become a defining challenge for the industry.
Electricity costs have risen 42% since 2019, and utilities requested $31 billion in rate hikes in 2025 alone. In central Ohio, residential rates jumped 60% between 2020 and 2025. PJM capacity prices have spiked nearly tenfold, with data centers driving $9.33 billion in added capacity costs. These pressures have made nuclear power — with its 95%+ capacity factor and zero carbon emissions — an increasingly attractive option for hyperscalers.
Big Tech's Nuclear Deal Tracker: Over 9.8 GW Committed
As of May 2026, every major tech hyperscaler has signed at least one nuclear power deal for AI data center capacity. Thirteen announced projects commit over 9.8 GW of nuclear capacity. The strategy is two-pronged: leveraging proven large reactors now for immediate power needs while developing SMRs for future deployment.
Microsoft: Restarting Three Mile Island
Microsoft signed a landmark 20-year, 837 MW power purchase agreement with Constellation Energy to restart Unit 1 of the Three Mile Island plant in Pennsylvania, renamed the Crane Clean Energy Center. The plant, which was shut down in 2019 for economic reasons, is expected to come online by 2027 after a $1.6 billion refurbishment. A $1 billion federal loan approved in November 2025 accelerated the timeline. The deal is projected to create 3,400 jobs and add $16 billion to Pennsylvania's GDP. "This plant was prematurely shut down despite being among the safest nuclear plants," said Constellation CEO Joe Dominguez.
Amazon: 1.92 GW at Susquehanna
Amazon Web Services (AWS) expanded its agreement with Talen Energy to secure 1.92 GW of power from the Susquehanna nuclear plant in Pennsylvania through a 17-year PPA contracted until 2042. Amazon also invested $700 million in X-energy to develop up to 12 Xe-100 SMRs and is spending $20 billion on two data center complexes in Pennsylvania. The Amazon nuclear data center deal is among the largest corporate power purchase agreements in history.
Meta and Oklo: 1.2 GW in Ohio
Meta partnered with Oklo Inc. to develop a 1.2 GW advanced nuclear campus in Pike County, Ohio, on 206 acres formerly owned by the Department of Energy. Under the binding agreement, Meta will prepay for power and provide funding to advance Oklo's Aurora powerhouse deployment. The first phase targets 2030, scaling to full capacity by 2034. Meta also signed deals with TerraPower for additional capacity, giving it the largest nuclear portfolio among tech companies at up to 6.6 GW across multiple partners.
Google and Kairos Power: 500 MW of SMRs
Google committed to 500 MW from Kairos Power's fluoride-cooled SMRs, with the first reactor expected by 2030 and further deployments through 2035. Kairos Power began constructing its Hermes demonstration reactor in Tennessee in July 2025. The Google Kairos Power SMR partnership represents a bet on Generation IV molten salt reactor technology.
The SMR Market: $13.8 Billion by 2032
The small modular reactor market, valued at $6.9 billion in 2025, is projected to reach $13.8 billion by 2032 as projects transition from planning to construction. SMRs deliver 95%+ capacity factors, require only about 50 acres of land, and operate independently of the grid. However, significant challenges remain.
HALEU Supply Squeeze
The primary bottleneck is High-Assay Low-Enriched Uranium (HALEU), enriched to just under 20% U-235. The U.S. Department of Energy estimates domestic demand could reach 50 metric tons per year by 2035, yet the only U.S. producer aimed for just 900 kg in 2024. Russia was previously the sole commercial supplier, but Russian uranium imports are now banned. This caused TerraPower to delay its Natrium project by at least two years. The U.S. government is responding with stopgap measures including downblending weapons-grade uranium and $500 million in Inflation Reduction Act funding for HALEU production.
Supply Chain and Workforce Constraints
Beyond fuel, bottlenecks exist in nuclear-grade steel forgings for pressure vessels — only a handful of specialized forges in Japan, South Korea, and France can produce these parts. Transformer lead times have stretched to 36+ months, and equipment costs have risen 30% since 2019. The nuclear engineering talent pool remains thin, with demand for skilled professionals surging across both the nuclear and data center sectors.
Implications for Utility Pricing and Grid Reliability
The nuclear-powered data center boom has significant implications for utility pricing and grid reliability. While hyperscalers secure behind-the-meter power, residential and commercial customers face rising costs. The impact of data centers on electricity prices is becoming a contentious policy issue. Communities across Ohio, Oregon, and Georgia are pushing back, demanding tech companies self-fund power infrastructure. AEP Ohio has frozen new interconnections, and states are considering grid capacity fees.
Natural gas is expected to fill roughly one-fifth of new power needs in the interim, as nuclear and geothermal projects face multi-year timelines. The 2026-2028 window is critical for financing decisions that will determine whether power constraints force operators to delay or curtail expansion plans.
Expert Perspectives
"The scale of investment we're seeing from Big Tech is unprecedented in the history of the nuclear industry," said Dr. Maria Korsnick, President of the Nuclear Energy Institute. "These companies are not just buying power — they are underwriting the construction of new reactors and creating a bankable model for SMR deployment."
However, critics warn of risks. "Restarting Three Mile Island and building SMRs from scratch are very different propositions," noted Edwin Lyman, Director of Nuclear Power Safety at the Union of Concerned Scientists. "The cost and timeline overruns that have plagued large nuclear projects could easily affect SMRs as well."
Frequently Asked Questions
What is a small modular reactor (SMR)?
An SMR is a nuclear fission reactor with a rated electrical power of less than 300 MW, designed for factory fabrication and modular construction. SMRs offer passive safety features, lower upfront costs, and scalability compared to traditional large reactors.
Why are tech companies investing in nuclear power for data centers?
AI workloads require 24/7 carbon-free baseload electricity at massive scale. Nuclear power provides 95%+ capacity factor with zero emissions, making it ideal for powering data centers that cannot tolerate intermittent renewable energy.
How much nuclear capacity have tech companies committed to?
As of May 2026, 13 announced projects commit over 9.8 GW of nuclear capacity. Microsoft leads with 837 MW from Three Mile Island, Amazon has 1.92 GW from Susquehanna, Meta has up to 6.6 GW across multiple partners, and Google has 500 MW from Kairos Power.
What is HALEU and why is it important?
High-Assay Low-Enriched Uranium (HALEU) is uranium enriched to 5-20% U-235, required by many advanced SMR designs. Current U.S. production capacity is severely limited, creating a supply bottleneck that threatens deployment timelines.
When will the first SMR-powered data center come online?
Microsoft's Three Mile Island restart (a large reactor, not an SMR) is expected by 2027. The first SMR-powered data centers are projected for 2030, including Google's Kairos Power reactors and Meta's Oklo campus in Ohio.
Conclusion: A Historic Energy-Technology Convergence
The nuclear-powered data center movement represents one of the most consequential energy transitions of the 2020s. With over $400 billion in committed investments, Big Tech is effectively bankrolling a nuclear renaissance. Success depends on overcoming HALEU supply constraints, supply chain bottlenecks, and regulatory hurdles. If these challenges are met, SMRs could transform both the data center industry and the global energy landscape, providing the clean, reliable power needed to sustain the AI revolution for decades to come.
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