Power & Operations

Three United Kingdom organizations—the Nuclear Industry Association, RenewableUK (formerly the British Wind Energy Association), and Solar Energy UK—are calling for urgent action to build new nuclear, wind, and solar capacity and for a binding target of 100 percent grid decarbonization by 2035.

The United Kingdom was the first of the world’s major economies to embrace a legal obligation to achieve net-zero carbon emissions by 2050.

Capacity factor is a measure of reliability, and reliability delivers results. The U.S. nuclear power fleet produced about 789.9 TWh of clean electricity in 2020 and ended the year with 94 operating reactors. According to Energy Information Administration data, that’s about 37 percent more electricity than the 576.9 TWh produced in 1990 by a much larger fleet of 112 reactors.

Nuclear News has tracked and analyzed the capacity factors of the U.S. fleet since the early 1980s, before concerted industry efforts yielded unforeseen performance improvements. High nuclear capacity factors are now less an achievement than an expectation. So much so, in fact, that advanced reactors in development today are assumed to be capable of achieving capacity factors above 90 or even 95 percent.

The U.S. fleet has maintained a median capacity factor near 90 percent for 20 years (see Fig. 1), and the median design electrical rating (DER) net capacity factor for 2018–2020, at 91.33, does not disappoint—unless by showing virtually no change relative to the median of 91.34 recorded in 2015–2017. However, this lack of meaningful difference only underscores the consistent reliability of the U.S. fleet.

The Canadian Nuclear Safety Commission (CNSC) has completed phase one of its pre-licensing vendor design review (VDR) for Moltex Energy’s 300-MW Stable Salt Reactor–Wasteburner (SSR-W)—a molten salt reactor that uses nuclear waste as fuel. CNSC entered into an agreement with Moltex in November 2017 to conduct the initial phase of the review.

Craig Piercy

Historically, we have used the May issue of Nuclear News to analyze capacity factor data for U.S. nuclear plants. Once again, the topline story is the continuation of a 20-year period of outstanding operational performance. In 2020, the U.S. nuclear fleet generated about 789.9 TWh of electricity, surpassing coal to become the second-largest source of electricity in the nation. Overall, the fleet recorded a median three-year capacity factor of 91.33, besting the three-year median of 91.20 published just last year. With some of our most venerable plants among the top performers, it’s no wonder that several utilities are investing now to ensure their plants can generate clean energy into their eighth decade or beyond.

After declaring its intention earlier this year to invest in nuclear technologies in Poland, Westinghouse Electric Company on May 24 announced the establishment of a “world-class” global shared service center in Kraków.

Portland, Ore.–based NuScale Power has announced the signing of a memorandum of understanding with the Grant County Public Utility District (Grant PUD) to evaluate the deployment of NuScale’s advanced nuclear technology in central Washington state.

The UK SMR consortium last week revealed the latest design and power upgrade—from 440 MW to 470 MW—for its proposed small modular reactor. According to the consortium’s lead company, Rolls-Royce, the “refreshed” design features a faceted roof, an earth embankment surrounding the reactor to integrate with the landscape, and a more compact building footprint.

A large group of nuclear and nuclear-friendly organizations, including the American Nuclear Society, sent a letter on May 24 to Illinois lawmakers urging them to pass the Climate Union Jobs Act (CUJA) before the legislature adjourns at the end of this month.

Among its provisions, the bill would create 74 million megawatt-hours of carbon mitigation credits for Exelon’s Braidwood, Byron, Dresden, and LaSalle nuclear plants. The Clinton and Quad Cities plants, which participate in Illinois’s zero-emission credit program, would not be eligible. (In August of last year, Exelon Generation, owner and operator of all six nuclear plants in Illinois, announced that it would close Byron and Dresden without state support of some kind, adding that Braidwood and LaSalle were also imperiled.)

Biden

Moon

The United States and South Korea have agreed to “develop cooperation in overseas nuclear markets, including joint participation in nuclear power plant projects, while ensuring the highest standards of international nuclear safety, security, and nonproliferation are maintained,” according to a statement from the White House on last week’s Washington meeting between President Joe Biden and South Korean President Moon Jae-in.

As part of that agreement, South Korea will adopt a common policy with the United States requiring recipient countries to have a safeguards agreement “Additional Protocol” in place as a condition of doing nuclear-related business. (The Additional Protocol is an expanded set of requirements for information and access to assist the International Atomic Energy Agency in its work to confirm that states are using nuclear material solely for peaceful purposes.)

Mary Lou Dunzik-Gougar

I recently participated in a webinar focused on the impact of premature shutdown of nuclear power plants, specifically, the announced closure of the Byron and Dresden NPPs in Illinois. The impacts will permeate at local, national, and international levels. In their communities, the Byron and Dresden NPPs are embraced as good neighbors, providing quality jobs and a strong tax base while efficiently feeding competitively priced power to the grid. Yet, with the significant subsidies and portfolio standards that benefit renewables, it’s still difficult for nuclear plants to compete.

McCarthy

Despite the discordant, antinuclear note struck by President Biden’s environmental justice panel in a recent report, other administration officials continue to signal support for nuclear energy.

In an interview with the Washington Post last week touting the president’s American Jobs Plan, White House National Climate Advisor Gina McCarthy reiterated her belief that nuclear energy is key to the administration’s stated goal of 100 percent carbon-free electricity by 2035 and net-zero emissions by 2050.

Global First Power’s (GFP) Micro Modular Reactor (MMR) project has moved to the formal license review phase with the Canadian Nuclear Safety Commission (CNSC), becoming the first small modular reactor to do so.

The viability of nuclear power ultimately depends on economics. Safety is a requirement, but it does not determine whether a reactor will be deployed. The most economical reactor maximizes revenue while minimizing costs. The lowest-cost reactor is not necessarily the most economical reactor. Different markets impose different requirements on reactors. If the capital cost of Reactor A is 50 percent more than Reactor B but has characteristics that double the revenue, the most economical reactor is Reactor A.

The most important factor is an efficient supply chain, including on-site construction practices. This is the basis for the low capital cost of light water reactors from China and South Korea. The design of the reactor can significantly affect capital cost through its impact on the supply chain. The question is, how can advanced reactors boost revenue and reduce costs?

The White House Environmental Justice Advisory Council (WHEJAC) would appear to be not a fan of nuclear energy. In a May 13 report issued to the White House Council on Environmental Quality, WHEJAC lists “The procurement of nuclear power” under the heading “Examples of the Types of Projects That Will Not Benefit a Community.” (Other projects listed include fossil fuel procurement, carbon capture and storage, and cap and trade.) The 90-page report does not provide an explanation for the opposition.

The Illinois State Capitol in Springfield. Photo: Teemu008/Wikipedia

As Illinois lawmakers race to hammer out a compromise clean energy bill before the current legislative session adjourns on May 31, advocacy group Nuclear Matters is asking members of the state’s nuclear community to speak up in support of state aid for the struggling Byron and Dresden nuclear plants, both of which are scheduled to be prematurely retired later this year by Exelon.

Nuclear Matters has launched a letter-writing campaign to encourage individuals to contact their representatives via a pre-drafted letter to urge passage of legislation that will provide that aid. The letter is one of general support for Illinois’s nuclear plants and not an endorsement of any specific measure.

The commercial start date for Unit 3 at the Vogtle construction site near Waynesboro, Ga., has been pushed back to January of next year, adding some $48 million to the cost of the nuclear new-build project, according to Georgia Power and Southern Nuclear officials who were testifying at a May 18 hearing before the Georgia Public Service Commission.

A highly anticipated report released yesterday by the International Energy Agency on how to transition the world to a net-zero energy system by 2050 calls for “nothing less than a complete transformation of how we produce, transport, and consume energy.” At the same time, the report, Net Zero by 2050: A Roadmap for the Global Energy Sector, characterizes its preferred road to net zero as the one “most technically feasible, cost-effective, and socially acceptable.”

That road, while relying primarily on renewable energy, keeps a lane open for nuclear, which, the report says, will make a “significant contribution” and “provide an essential foundation for transitions.”

Among the 12 energy-mix scenarios analyzed in a new report from the University of Illinois at Urbana-Champaign, maintaining the current Illinois reactor fleet while also investing in advanced nuclear technology and renewable energy is the most economical path to zero carbon for the state. It is also, says the report, the path that generates the lowest lifecycle carbon emissions.

The 26-page report, Economic and Carbon Impacts of Potential Illinois Nuclear Plant Closures: The Cost of Closures, was coauthored by Kathryn Huff, who was recently appointed principal deputy assistant secretary for nuclear energy at the Department of Energy, along with Madicken Munk, a research scientist in the university’s Nuclear, Plasma, and Radiological Engineering (NPRE) Department, and Sam Dotson, a graduate researcher in NPRE’s Advanced Reactors and Fuel Cycle Analysis group. Financial support for the report was provided by Nuclear Matters.

Nuclear power will remain the dominant source of electricity generation in Bulgaria until 2030, despite the national government’s plans to add a substantial amount of renewable capacity this decade, says GlobalData, a U.K.-based data and analytics company. (According to a national strategy blueprint published on the Bulgarian parliament’s website last year, the country is targeting an additional 2,645 MW of installed capacity from renewable sources by the end of 2030.)

Achieving global carbon neutrality by 2050—a pledge made by well over 100 countries so far, including Canada, the European Union, Japan, the United Kingdom, and the United States—will require investment in new nuclear capacity and the retention of existing nuclear generation, states an open letter released last Friday by the leaders of six prominent nuclear industry organizations.

The letter was signed by John Gorman, president and chief executive officer of the Canadian Nuclear Association; Yves Desbazeille, director general of FORATOM; Shiro Arai, president of the Japan Atomic Industrial Forum; Maria Korsnick, president and CEO of the Nuclear Energy Institute; John Greatrex, chief executive of the United Kingdom’s Nuclear Industry Association; and Sama Bilbao y León, director general of the World Nuclear Association.