The U.S. power grid is entering a period unlike any it has experienced in decades. Rapid electrification, domestic manufacturing, and the exponential growth of artificial intelligence are reshaping electricity demand. A recent report from Lawrence Berkeley National Laboratory, supported by the U.S. Department of Energy, projects that data centers alone could account for between 9.5% and 15.3% of total U.S. electricity consumption by 2030. More broadly, U.S. electricity demand is projected to grow by approximately 15% to 20% by 2035—roughly 80–110 GW of firm capacity—underscoring the scale of new generation that will be needed. Against this backdrop, executives across the utility, independent power producer, industrial, and technology sectors are making investment decisions that will shape the grid for decades.Safety is foundational to any nuclear project and is subject to rigorous review by the U.S. Nuclear Regulatory Commission (NRC). But the commercial and execution risks utilities must weigh extend well beyond safety: reactor design, constructability, supply chain readiness, licensing progress, workforce depth, operability, performance, and reliability.Advanced reactors are often discussed as a single technology class, yet the commercial and execution risks ******* ociated with individual designs differ substantially. As these technologies move toward commercial deployment, evaluating them requires a more comprehensive ******* sment of their technology, deployability, and commercial merits—and, importantly, the extent to which each design reduces or eliminates risk across multiple dimensions over the full project lifecycle. That ******* sment begins with three structural questions.
Capital efficiency is more than the magnitude of overnight capital cost (OCC). It encompasses how effectively capital is deployed and the capital intensity over time—especially before the commercial operation date (COD)—as well as post-COD costs: fuel, refueling outages, major projects and refurbishment, labor and other operations and maintenance (O&M) expenditures, and ultimately decommissioning. OCC offers only a partial view, since financing costs can account for a significant portion of total project cost. A smaller, simpler, faster-to-build design may achieve superior unit economics compared with higher-output designs that initially project a lower $/kW, once financing and schedule are considered. This amplifies the importance of long-lead materials, supply chain certainty and resilience, workforce and learning effects, and constructability in determining overall project cost and capital exposure.Utilities should also examine how fundamental reactor design choices affect both construction and lifecycle costs. Designs with high inherent safety that employ passive safety features—placing the plant into a safe condition through the natural laws of physics rather than relying primarily on active systems or operator intervention—can reduce reliance on multiple trai