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Responding to a 2025 survey, ** of data center operators worldwide said that they were using onsite renewable energy and/or battery storage at their facilities. **** percent, meanwhile, said they had plans for small modular nuclear reactors.

Operators bring power generation onsite

With AI data center demand soaring, operators are turning to novel and innovative solutions to secure reliable power. Among the most attractive are on-site generation systems, which allow facilities to operate independently of local grid infrastructure. This not only maximizes uptime but also protects against grid instability, supply shortages, and volatile energy markets. On-site power is proving attractive both in major hubs such as Northern Virginia and Dublin, where strained infrastructure has led officials to restrict new development, as well as in remote locations, where limited or costly grid access can slow deployment.

Small modular reactors on the horizon

Nuclear has emerged as an important option for operators seeking reliable, low-carbon power. In the short to medium term, companies such as Google and Microsoft are striking deals to tap electricity from existing nuclear plants, securing predictable supply without the need for new infrastructure. Meanwhile, at the cutting edge, big tech is also investing heavily in the development of small modular reactors (SMRs), which promise to bring the reliability of nuclear power onsite. While highly attractive for energy-hungry facilities, SMRs still face significant practical and regulatory challenges before they can scale widely.