A white paper produced by Schneider Electric makes the case for using small modular reactors to meet the energy challenges of the data center sector. “Small Modular Nuclear Reactors Suitability for Data Centers,” by Marcin Wegrzyn and Steven Carlini, discusses the potential SMRs offer for supplying reliable, low-carbon energy to data centers, along with enhanced operational safety and improved energy resiliency, compared with renewable alternatives. However, to better evaluate SMR suitability for the continued technological advancement of data centers, an improved regulatory landscape, and ongoing international cooperation are necessary.

The combined energy generation in the United States from solar and wind during the first half of the year was more than that of nuclear plants for the first time, according to data from energy think tank Ember.

Electricity generation from utility-scale solar and wind assets during the first half of 2024 was a record 401.4 terawatt-hours, compared with 390.5 TWh from nuclear reactors

New legislation being considered could make Hawaii the 29th state to produce nuclear power—although the proposal faces an uphill battle.

Two bills introduced in the state legislature would pave the way for nuclear power production in Hawaii:

• H.B. 1741 proposes a constitutional amendment that would allow for construction of a nuclear power plant without prior legislative approval.
• H.B. 1516 would establish a nuclear energy commission within the state’s Department of Business, Economic Development, and Tourism to study potential benefits of nuclear energy.

We’re failing.

We’re failing to decarbonize the world in any significant way. Global greenhouse gas emissions are still rising and appear on track to continue rising until at least 2040—the result of energizing the developing world.

The Department of Energy is holding an initial Industry Day on July 28 that is open to parties with proven experience in implementing successful clean electricity projects generating 200 MW or larger.

When a technical problem with a feedwater pump at Unit 1 of the Comanche Peak nuclear power plant caused the unit to shut down temporarily on June 16, a new backup system was employed by grid operator Electric Reliability Council of Texas (ERCOT) to make up for the electricity loss.

Amy Roma

Flipping on a light switch and knowing that the power will come on is a luxury. While it sounds like a simple act, it is achieved through deliberate government policies that ensure our electricity comes from a mix of sources, some of which are continuously operational—such as nuclear and gas—and some of which only operate at certain times—such as wind and solar. If any one source is unavailable or overly expensive, another source needs to deliver on demand. Diversity of energy sources ensures the grid is able to adapt and recover from changing conditions so that we can always flip the lights on.

While grid resilience—the grid’s ability to anticipate, absorb, and recover from major disruptions and rapidly restore electric service in their wake—is a matter of paramount importance, the source diversity required to achieve this is at risk. For power grids relying on renewables, supply and demand hang in a balance based on time of day and weather.

Examining Supply-Side Options to Achieve 100% Clean Electricity by 2035 was written by research staff at the National Renewable Energy Laboratory, so its reliance on solar and wind energy to decarbonize the grid by 2035 is not surprising. But that’s a big ask for any variable energy technology, especially if the nation’s largest source of clean power—nuclear energy—is relegated to a supporting role. Massive additions of solar and wind energy on the order of 2 TW would require a supporting infrastructure of new transmission lines, as well as batteries and hydrogen for daily and seasonal energy storage that would drive demand and capacity requirements higher.

There is still a chance for California’s last remaining nuclear power plant to stay open.

Last Friday, more than 50 nuclear advocates testified in support of the Diablo Canyon nuclear power plant at a California Energy Commission workshop. Many spoke of the need for California to shore up its electricity grid in the face of coming heat waves and power outages. Others emphasized that closing the plant, which generates 2.2 GW of electricity and currently provides 8.6 percent of the state’s total supply and about 15 percent of its low-carbon electricity, would be devastating to California’s emission-reduction goals.

Steven P. Nesbit
president@ans.org

I often say that nuclear energy will play a key role in our clean energy future, and I believe that is true. However, it won’t happen automatically. There is no “divine right” behind nuclear energy. We like to admire the fascinating aspects of nuclear technology, but at the end of the day, it comes down to the money, and that’s where we stubbed our toe badly over the past two decades.

The “Nuclear Renaissance” foundered when advanced light water reactors turned out to be much more expensive than their marketing claimed, while alternatives—primarily natural gas—plummeted in price. We tend to point to impediments to nuclear technology, such as overly restrictive licensing requirements and adverse public opinion, but these matter only to the extent of their impact on the bottom line. Again, it comes down to the money.

To do big things, like building the interstate highway system, or going to the moon, government usually has a plan. Electric companies and grid operators, which are responsible for keeping the lights on, always have a plan. But something unusual has happened in the past few months. About four dozen U.S. utilities, plus the federal government and many states, have promised to do something extremely big: to eliminate carbon dioxide emissions, or cut them drastically. But they are not clear on how.

America’s electric utility workers and nuclear engineers are ready to work together to help rapidly decarbonize and electrify the economy. We welcome provisions in the bipartisan infrastructure bill that aim to prevent premature closures of our nuclear power plants. Through measures such as production tax credits, President Biden can safeguard America’s largest carbon-free energy source by recognizing the clean-air contributions of nuclear energy.

The Economist published a video earlier this month trying to answer the question of why is nuclear so unpopular. The video is paired with a story that appeared on The Economist's website advocating for a well-regulated nuclear industry. The video starts off with very dramatic images of nuclear weapons and scenes from popular culture like Godzilla, The Simpsons, and the recent HBO miniseries Chernobyl. The video provides a quick history of nuclear science and technology starting with Eisenhower's Atoms for Peace speech in an attempt to prove to the viewer that "nuclear is one of the safest, most reliable, and sustainable forms of energy, and decarbonizing will be much more difficult without it."

A recent article from Deseret News looks at the stark reality of hazardous waste piling up from the green energy revolution. The lengthy article, "The dark side of ‘green energy’ and its threat to the nation’s environment," was written by News reporter Amy Joi O’Donoghue and is based on an Environmental Protection Agency briefing from the Trump administration. The briefing, issued in January, outlines the difficulties the United States will face in recycling and safely disposing of the materials used for green energy technologies.

Green energy’s looming waste problem: While the current fervor around the globe is to decarbonize as quickly as possible using wind and solar, the energy industry has yet to fully tackle the long-term waste stream for these systems. Many supporters think that renewable energy equals no waste, when in reality all energy-producing technologies produce waste that should be managed responsibly. That includes solar panels and wind turbines, which have their own environmental hazards such as toxic metals, oil, fiberglass, and other materials. Andrew Wheeler, EPA administrator at the time, said, “Without a strategy for their end-of-life management, so-called green technologies like solar panels, electric vehicle batteries, and windmills will ultimately place [an] unintended burden on our planet and economy.”

Mary Lou Dunzik-Gougar

In the September issue of Nuclear News, I asked if you’ve ever wondered why nuclear isn’t commonly considered the choice for clean power production. In that column and in August’s, I provided some information about the cleanliness and safety of nuclear for your use as you make the case for this clean energy source to friends and neighbors. This month, let’s talk reliability.