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This is the last of a three-part series on emerging energy sources and Texas’ role in developing them. You can read part one, on hydrogen fuel, here, and part two, on geothermal energy, here.
Gov. Greg Abbott took the stage at the University of Texas at Austin last August to discuss building up an energy source in the state. Unlike the oil and gas industry that Abbott often promotes, this fuel could create reliable power without also pumping pollution into the air.
Abbott was there to talk about nuclear power — not big reactors like the ones that already operate in Texas, but a new generation of smaller nuclear reactors that companies are pitching as both safe and less financially risky than large nuclear power plants because they cost less.
Abbott joined a panel with the CEO of chemical and plastics manufacturer Dow and the head of a newer business, called X-energy, which plans to build small nuclear reactors for Dow. The reactors will produce steam and electricity for the company’s complex just up the coast from Corpus Christi.
“We’re going to be studying and evaluating the reliability, the safety of nuclear power,” Abbott announced to the crowd. “And, if it passes all the tests, we will be looking to dramatically expand nuclear power in the state of Texas.”
These downsized reactors offer a possible solution, in Abbott’s view, to the woes of the state’s main electric grid. The grid’s vulnerabilities were exposed during a 2021 winter storm when subfreezing temperatures knocked power plants offline; millions of people went without power or heat for days and at least 200 people died. The grid’s near collapse became a political nightmare for Abbott.
After that disaster, some energy industry experts said part of the state’s problem was that it lacked enough on-demand power — meaning power that can come on anytime. The state increasingly relies on solar farms that only work when the sun shines, and wind turbines that only turn when the wind blows. Companies have been building a lot of both in Texas over the past decade.
Texas legislators last year passed new incentives to try to get more gas-fueled power built to meet that desire for more on-demand electricity. Small nuclear power could fill the same role.
Nuclear power isn’t new to Texas, where four large reactors have fed the electric grid for decades. Two operate southwest of Fort Worth. Another pair runs southwest of Houston, near Matagorda Bay. The plants accounted for about 9% of electricity produced on the state’s main electric grid last year.
Early on, the economics of large reactors made them more appealing than small ones for powering electric grids, but a new one hasn’t been built in Texas in decades and is unlikely because of cost and public fears of a major accident.
A number of companies are now hoping to build reactors a fraction of the size, producing 300 megawatts of electricity or less, compared with existing reactors that in Texas generally produce around 1,200 megawatts.
Small reactors have been around for decades — they have powered submarines since the 1950s, for example — but the new generation of reactors under development are designed to power everything from industrial facilities to oilfield water desalination to the electric grid. They’ll need approval from federal regulators to go into operation.
The small reactors rely on the same process as large ones, splitting atoms to create heat. They’re generally designed so that their components can be made in factories and shipped on highways.
Engineers are experimenting with small reactors in two ways: They’re trying different fuels instead of the typical uranium-filled rods that power modern large reactors. And they’re using substances other than water to transfer the heat and keep the reactors cool.
X-energy, for example, is using uranium enclosed in graphite spheres for the fuel. The company says the spheres keep the radioactive waste contained when the fuel has been used up. Helium gas cools the reactor, which the company says cannot carry radioactive material if released like water can.
Small reactors could provide consistent power for data centers or ramp up and down as needed on the state’s ever-growing electric grid, said Jimmy Glotfelty, a state public utility commissioner who helps regulate electricity and who is leading a working group at Abbott’s request to pave the way for small nuclear reactors in Texas.
“These reactors have the potential to revolutionize the way power is generated in this state and provide stable, low-cost power for a long, long time here in Texas,” Glotfelty said.
Updated technology
The smaller reactors are the nuclear industry’s solution for building out the power resource at a time when large reactors face challenges that make them difficult to build.
To start, large nuclear power has a longstanding public trust problem. Some wrongly think the reactors can explode like nuclear weapons, even though the physics and chemistry of the systems don’t allow for that, said University of Texas at Austin nuclear and radiation engineering professor Derek Haas. Nuclear power plants have failed spectacularly because of accidents or natural disasters in Chernobyl, Fukushima and Three Mile Island.
Pop culture hasn’t helped, Haas continued. The TV show The Simpsons takes place in a town with a violation-riddled nuclear plant, where Homer shirks his duties in the control room and a contaminated fish grows a third eye. An acclaimed 2019 HBO series chronicled the horrors of the deadly Chernobyl explosion.
Even Haas said he’s not immune to what he described as a barrage of information that characterizes it as dangerous because radioactive material can cause deadly radiation sickness or cancer.
“I’m a researcher and expert in radiation, and when I work on highly radioactive things, I still sweat a little bit,” Haas said. “I analyze the procedure that we’re going to be doing. I do the math. I go and I do the work as safely, as quickly as we can to minimize my radiation dose. But I still sweat.”
The South Texas Project Electric Generating Station is a nuclear power plant about 90 miles southwest of Houston.
Credit:
Jennifer Whitney for The Texas Tribune
Even if a company can get past the strict safety regulation and public fear to build a new mega-reactor, there remains significant financial risk. The projects are big and costly. One nuclear project in Georgia is expected to be fully commercially operational this year, seven years later than expected and at a cost more than double the original $14 billion estimate.
Add to that widespread concern about where to put nuclear waste, and building another large reactor starts to look impossible. Used fuel rods can remain radioactive for thousands of years. Abbott four years ago joined residents, environmentalists and oil companies to oppose a federal license for a company that wanted to store spent nuclear fuel in West Texas.
But academic and environmental critics say the design changes in the smaller reactors don’t significantly alter what they see as a failed technology.
Decades ago, engineers built small nuclear reactors to begin with and had to increase their size to make the economics work, said M.V. Ramana, a professor in the school of public policy and global affairs at the University of British Columbia.
“When you go back to smaller reactors, you are going to lose out on those economies of scale, and so it’s going to be more expensive, right?” Ramana said. “The other thing to remember is that these are nuclear reactors, and so they have all of the problems that are traditionally associated with nuclear power plants, including the risk of accidents, including the fact that they produce radioactive waste.”
Groups such as Beyond Nuclear don’t trust the safety of nuclear power regardless of the size of a reactor. Fort Worth-area residents have protested the extension of a federal license for the nearby large reactors because they’re worried about safety. Beyond Nuclear says small reactors will still have waste that has nowhere to be permanently stored.
“Nobody wants this stuff,” said Paul Gunter, director of the reactor oversight project for Beyond Nuclear. “We don’t know what to do with the first cupful of high-level nuclear waste … You have to biologically isolate it for hundreds of thousands and in some cases millions of years.”
The new small reactors are “modular,” meaning parts can be mass-produced. But Dan O’Brien, a senior analyst at the think tank Energy Innovation, said reducing costs is still an issue. The price won’t plummet like it did for solar and wind, O’Brien said, because small reactors are still specialized.
“Every hot new technology seems like a silver bullet on the climate front but it never is,” O’Brien said. “There’s value in all these new technologies, but it’s just a matter of figuring out what that value is.”