The Nuclear Power Shortcut That Could Add Gigawatts to the U.S. Grid

The process of increasing the maximum power level at which a commercial nuclear power plant may operate is called a power uprate. Several nuclear plants are now considering applying for permission to uprate operations to produce more power in the mid-term to bridge the gap while more nuclear capacity is being developed.The United States Nuclear Regulatory Commission (NRC) regulates the maximum power level at which a commercial nuclear power plant may operate. The permitted power level is stated in the license and technical specifications for the plant and cannot be altered unless approved by the NRC. U.S. nuclear plants can request permission from the NRC to increase their power output, or “uprate”.The NRC will determine whether to grant a plant uprate permission depending on whether it can be achieved safely. To increase power output, nuclear operators must modify the nuclear reactor’s instrumentation, controls, and power-generation systems. Over the past two decades, the NRC has approved uprates that have provided an extra 6 GW of power to the U.S. electricity grid, which is equivalent to six large reactors. The agency is considering uprate requests from various operators that massively boost the country’s nuclear power capacity.To safely uprate operations, plant operators must upgrade components such as controls, turbines, and pumps within their nuclear facilities to generate more electricity. While these upgrades can cost billions of dollars to implement, they can allow operators to produce more power much more quickly than it takes to build a new facility. Many upgrades can be completed in five years or less. Analysts estimated that increasing electricity output from existing nuclear plants could add a massive 6-8 GW of clean power to the grid.In October, the largest nuclear power plant operator in the United States, Constellation Energy, announced plans to invest over $4.3 billion to refurbish 11 reactors at six plants in Illinois, Pennsylvania, and New Jersey, enabling them to produce more power. The investment is expected to help Constellation add 890 MW of power to the grid, enough to supply 700,000 homes. Google has agreed to buy electricity from those plants at an undisclosed price.This is just one of several projects that are expected to support the massive increase in U.S. power demand driven by the rapid rollout of new artificial intelligence (AI) data centres. Also this month, the U.S. Department of Energy (DoE) announced it would conditionally loan the energy company Vistra $4.2 billion to uprate three nuclear plants in Pennsylvania and Ohio, adding another 430 MW of capacity. Amazon also completed an agreement to uprate Constellation’s Calvert Cliffs Nuclear Power Plant in Maryland, while Google announced plans to increase power production from four reactors in Georgia.The Trump administration, which has announced plans to quadruple the U.S. nuclear power capacity by 2050, is highly supportive of these new projects. Energy Secretary Chris Wright said in a statement, “By getting more power out of the nuclear plants we already have, we can deliver more affordable, reliable, around-the-clock energy.”Several nuclear plant operators have struggled to secure the funds to upgrade their plants as U.S. power demand plateaued in the 2000s and public perception of nuclear power was poor. However, the rising demand for power driven by data centres and the improved public perception of nuclear power has encouraged tech companies to invest heavily in a wide range of energy projects, from nuclear power to gas plants and renewable sources. Several tech companies are now willing to pump vast amounts of capital into uprating projects to rapidly increase their access to the clean power needed to run massive data centres.The NRC expects a total of 31 power uprate applications totalling 7.3 GW thermal and 2.4 GW electric between 2026 and 2032. The organisation is expected to approve several of these projects, as many of the operators requesting uprate permissions have decades of experience in nuclear power development in the United States, making them well-versed in managing safety concerns.Some operators are wary of conducting uprate work because the necessary upgrades would require them to stop producing power for several months. However, as tech companies demonstrate their willingness to invest heavily in nuclear energy projects, more companies may be convinced in the coming years. Uprating operations is unlikely to detract from plans to develop new nuclear plants in the United States, given the projected rise in power demand over the coming decades. However, it could provide an alternative way to rapidly expand the country’s nuclear power capacity to fill the gap while new facilities are being designed, licensed, and constructed.By Felicity Bradstock for Oilprice.comMore Top Reads From Oilprice.comIndia’s Annual Wind Power Installations to Double by 2030Ship-to-Ship Oil Transfers Surge Off India’s West CoastU.S. Wants World Bank to Drop Ban on Upstream Oil and Gas Funding