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SALT LAKE CITY — As Utah looks for ways to meet growing electricity demand from data centers, artificial intelligence, manufacturing and population growth, nuclear energy has become part of the state’s energy conversation.

Gov. Spencer Cox has said Utah must embrace nuclear energy if it wants to meet surging electricity demand and remain competitive in the global economy.

“And as I’ve said many times, if you are serious about energy abundance, you have to be serious about nuclear energy,” Cox said.

Much of that demand is being driven by artificial intelligence data centers, which require enormous and reliable power supplies. Proponents say small modular reactors are the answer — offering stable, carbon-free electricity that traditional renewables struggle to match.

Critics, including downwinders and environmental advocates, said Utah’s history with radiation exposure should make state leaders more cautious.

Listen to parts one and two of the nuclear energy reporting on KSL News Daily below. 

Advocates tout nuclear reliability and clean air benefits

John Kotek, senior vice president of policy and public affairs at the Nuclear Energy Institute, said nuclear power’s fuel cycle gives it an edge over fossil fuels.

“Once you fuel a nuclear reactor, it’ll run between 18 and 24 months before you have to shut it down and put new fuel in it,” Kotek said. “So you’re not dependent on shipments of coal or gas in a pipeline or what have you.”

Kotek added that nuclear energy produces no carbon emissions or air pollutants, saying it has “a real role to play in cleaning up air quality in the West.”

Dr. Tatjana Jevremovic, director of the nuclear lab at the University of Utah, said the math also favors uranium.

“The amount of energy you get out of a kilogram of uranium is about 10,000 times the amount of energy you get out of a kilogram of coal or petroleum,” Goodell said. “And also it is an energy source that has basically zero carbon emissions along with it.”

Environmental, health groups raise alarms

Not everyone is convinced the benefits outweigh the risks. Carmen Valdez, a senior policy associate at Heal Utah, said co-locating reactors with data centers creates compounding dangers.

“If something were to catch on fire, if something were to fail, you are now accumulating a lot of issues as well as creating toxic spaces,” Valdez said. “If we’re concerned about the cancers coming from data centers, what is the concern about a data center with a nuclear reactor, with spent fuel, on site?”

Valdez urged state lawmakers to invest instead in resources Utah already has in abundance.

“We are extremely equipped for solar. Maybe we should start looking at rooftop solar for our large communities and consumers,” Valdez said. “We have battery storage. We have so many opportunities.”

Waste disposal remains unresolved

Even nuclear supporters acknowledge one lingering challenge: the United States has no permanent disposal facility for radioactive waste.

“The very good part about spent nuclear fuel is that it’s very easy to manage. You put it in pools for a few years, you put it in these concrete and steel containers, and you can leave it on site,” Kotek said. “The challenge is, of course, it is radioactive, so it needs a long-term place to be stored and ultimately disposed.”

The Nuclear Regulatory Commission is an independent federal agency that licenses and regulates the civilian use of nuclear energy.  Kotek said the commission has helped to significantly improve plant safety over decades of operation.

“We’ve been operating commercial nuclear power plants in the United States for more than 60 years,” Kotek said. “And when you do something that long, you learn a lot about it. You get good at it.”

Utah’s Downwinders say history demands caution

Between 1951 and 1962, the U.S. government conducted above-ground nuclear testing at what was then called the Nevada Test Site. As a result, the wind carried radioactive debris to thousands of people in Utah, Idaho, Nevada, Arizona and New Mexico.

The people subjected to that fallout are known as Downwinders. For Mary Dickson, a Downwinder and thyroid cancer survivor, the push for nuclear energy carries a deeply personal weight. Dickson advocates for Utahns harmed by radiation exposure from nuclear weapons testing, and she said the state’s history should give leaders pause.

“The idea that they would be so cavalier and just welcome nuclear energy and everything that goes with it, including nuclear waste, into our state makes us expendable,” Dickson said. “And you’d think with our legacy, we would be far, far more cautious and just say ‘no.’”

Dickson said the concern extends beyond reactors themselves.

“They’re pushing for the facilities for every step — to develop uranium for reactors, to mine it, mill it, fabricate it, enrich it, all of that,” Dickson said. “And they’re looking at these throughout the state.”

Modern reactors designed to contain worst-case scenarios

Goodell said residents worried about safety should consider the track record of communities that already live near nuclear plants. He said modern facilities are engineered with multiple layers of protection.

“We don’t just design them to prevent accidents. We design them to contain accidents, so that even in a worst-case scenario for a nuclear power plant, all of the nasty radioactive material will stay at the plant,” Goodell said.

Graphic accessed from the Downwinders.info website. It indicates which counties in Arizona, Idaho, Nevada, New Mexico, and Utah experienced fallout from nuclear testing.

Dickson acknowledged that newer technology is safer than past designs but said no system is foolproof. She called on Utahns to demand answers from government leaders and push for regulations that protect public health and safety.

Contributing | Simone Seikaly

SALT LAKE CITY — On Sunday, it got all the way up to 109 degrees in Salt Lake City, and on a record-breaking heat day, it was not a surprise to find a packed splash pad.

Max Simakov and his family were visiting from Texas, and let’s just say a triple-digit day is nothing they couldn’t handle.

“Three of us live in Austin, Texas, and so this is actually normal except we have humidity. So this is nothing,” Simakov said.

While the kids were cooling off at the splash pad, things were heating up in the car. FOX 13 News placed a tray of unbaked cookies on the dashboard, seeing how long it would take to bake. In the first 30 minutes, the cookies had already reached 130 degrees, which shows how fast things can heat up.

Sunday night forecast:

Triple-digits sticking around – Sunday night forecast

West Jordan resident Kristina Morrill and her family were at the splash pad on Sunday, and she said she takes extra safety precautions for her family during the summer months.

“I’m vulnerable to the heat, so I can pass out, and so they kind of know hydration is the key,” she said. “Get yourself ready. Start drinking earlier, maybe a couple hours before that.”

“Sunscreen for sure — we are very diligent with that,” Simakov added. “Sometimes in the summertime, kids kind of roam from house to house, from friend to friend, and so I just want to make sure the kids are hydrated.”

In a matter of just two hours, the cookies inside FOX 13’s car had crisp edges, which demonstrated how dangerously hot the inside of cars can get. It’s encouraged not to leave dogs or kids inside the car for long periods of time, especially on triple-digit days.

Salt Lake County has a list of cooling centers across the state, along with their hours, on their website.

SAN JUAN COUNTY, Utah (ABC4) — The Babylon Fire, currently the largest wildfire in the United States, has grown to 106,324 acres, according to Utah Fire Info. The blaze is now 47% contained.

The wildfire is burning about 25 miles southwest of Monticello. Officials said five structures have been lost and 1,467 personnel are assigned.

Current operations

Firefighters are conducting an aggressive attack along the active fire edge, officials said, with a “specialized helitack crew” entering the Dark Canyon to secure the western edge into the bluffs. Crews in Trail Canyon continue to reinforce the fire line.

Fire personnel have reportedly secured containment lines off Steamboat Point and Dry Mesa.

A spot fire remains active on the north-facing slope of Jackson Ridge, officials said. Firefighters continue to protect a critical communication site on Abajo Peak.

Firefighters are using grass and brush on the south slope to keep the fire in heavy timber. Intense fire activity caused fire crews to pull back from Indian Creek, officials said. Complete containment from the southern line back to South Cottonwood is expected by the end of Sunday’s shift.

Firefighters assigned to the structure protection group on the Babylon Fire string hoses connected to a portable water tank along a dozer line west of Monticello, Utah, on July 11, 2026. (Courtesy: Geoff Liesik/U.S. Wildland Fire Service)

Upcoming weather, fire behavior

A critical shift is happening as monsoonal moisture moves in from the south. This will heighten the chance for critical fire weather conditions.

Temperatures will be slightly cooler and morning winds will be breezy, officials said, with some gusting along ridge tops. The main concern is forecasted scattered thunderstorms after noon, with dry storms bringing the potential for lightning and erratic, severe outflow winds.

See a current map of the Babylon Fire, as well as a smoke outlook, below.

Evacuations, closures

There are 23 evacuation zones in “SET” status at this time. This includes all zones west of Highway 191, south of State Route 211, and north of State Route 95.

All National Forest lands, roads, and trails within the Monticello Ranger District of the Manti–La Sal National Forest are closed. The Needles District of Canyonlands National Park is also closed to ensure public safety and aid firefighting operations.

All BLM-managed public lands west of Harts Draw Road and north through the Indian Creek Corridor to Indian Creek Falls are temporarily closed. This closure reportedly includes key recreation and backcountry areas like Shay Mesa, Beef Basin, Dark Canyon, and the Sweet Alice Wilderness Study Area.

“Anyone not directly involved in firefighting operations must stay out of all closure areas and avoid public lands within the boundary formed by State Route 211 to the north, U.S. Route 191 to the east, and State Route 95 to the south,” fire officials said. “These restrictions are in place to protect the public and allow firefighters to operate safely and effectively.”

Evacuation and closure information can be found on the Babylon Fire Inciweb page here.