Bill Gates’ TerraPower aims to build its first advanced nuclear reactor in a coal town in Wyoming

Published

4 years ago

November 18, 2021

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Kemmerer, Wyoming, is a frontier coal town. It was organized in 1897 by coal miners and still employs people in the coal and natural gas industries today.

Photo courtesy TerraPower

TerraPower, a start-up co-founded by Bill Gates to revolutionize designs for nuclear reactors, has picked Kemmerer, Wyoming, as the preferred location for its first demonstration reactor. It aims to build the plant in the frontier-era coal town by 2028.

Constructing the plant will be a job bonanza for Kemmerer, with 2,000 workers at its peak, said TerraPower CEO Chris Levesque in a video call with reporters on Tuesday.

It will also provide new clean-energy jobs to a region dominated today by the coal and gas industry. Today, a local power plant, coal mine, and natural gas processing plant combined provide more than 400 jobs — a sizeable number for a region that has only around 3,000 people.

“New industry coming to any community is generally good news,” Kemmerer Mayor William Thek told CNBC. “You have to understand, most of our nearby towns are 50 miles or more from Kemmerer. Despite that, workers travel those distances every day for work in our area.”

The town of Kemmerer, Wyoming. The statue is of J.C. Penney, as Kemmerer is home of the first Penney store, William Thek, the mayor of Kemmerer told CNBC.

Photo courtesy William Thek

For TerraPower, picking a location was a matter of geological and technical factors, like seismic and soil conditions, and community support, said Levesque.

Once built, the plant will provide a baseload of 345 megawatts, with the potential to expand its capacity to 500 megawatts.

For reference, one gigawatt or 1,000 megawatts of energy will power a mid-sized city, and a small town can operate on about one megawatt, according to a rule of thumb Microsoft co-founder Gates provided in his recent book, “How to Avoid a Climate Disaster.” The United States uses 1,000 gigawatts and the world needs 5,000 gigawatts, he wrote.

It will cost about $4 billion to build the plant, with half of that money coming from TerraPower and the other half from the U.S. Department of Energy’s Advanced Reactor Demonstration Program.

“It’s a very serious government grant. This was necessary, I should mention, because the U.S. government and the U.S. nuclear industry was, was falling behind,” said Levesque.

“China and Russia are continuing to build new plants with advanced technologies like ours, and they seek to export those plants to many other countries around the world,” Levesque said. “So the U.S. government was concerned that the U.S. hasn’t been moving forward in this way.”

Once built, it should provide power for 60 years, Levesque said.

How TerraPower’s reactors are different

The Kemerrer plant will be the first to use an advanced nuclear design called Natrium, developed by TerraPower with GE-Hitachi.

Natrium plants use liquid sodium as a cooling agent instead of water. Sodium has a higher boiling point and can absorb more heat than water, which means high pressure does not build up inside the reactor, reducing the risk of an explosion.

Also, Natrium plants do not require an outside energy source to operate their cooling systems, which can be a vulnerability in the case of an emergency shut-down. This contributed to the 2011 disaster at the Fukushima Daiichi nuclear plant in Japan, when a tsunami shut down the diesel generators running its back-up cooling system, contributing to a meltdown and release of radioactive material.

An artists rendering of a Natrium power plant from TerraPower.

Photo courtesy TerraPower

Natrium plants can store also heat in tanks of molten salt, conserving the energy for later use like a battery and, enabling the plant to bump its capacity up from 345 to 500 megawatts for five hours.

The plants are also smaller than conventional nuclear power plants, which should make them faster and cheaper to build than conventional power plants. TerraPower aims to get its plants to a cost of $1 billion, a quarter of the budget for the first one in Kemmerer.

“One important thing to realize is the first plant always costs more,” said Levesque.

Finally, Natrium plants produce less waste, a problematic and dangerous by-product of nuclear fission.

‘Times are changing’

The Kemmerer plant still faces a couple of hurdles, including federal permitting.

“There’s a comprehensive licensing process overseen by the Nuclear Regulatory Commission, that, frankly, is expensive. There, there are many, many reviews,” Levesque said.

Also, the fuel that the Natrium plant uses is called high-assay low-enriched uranium, or HALEU, which is not yet available at commercial scale.

The existing nuclear fleet in the United States runs uranium-235 fuel that is enriched up to 5%, the Department of Energy says, while HALEU is is enriched between 5% and 20%.

“Sadly, we don’t have this enrichment capability in the U.S, today. And this is an area of great concern of the US government, and specifically the Department of Energy,” Levesque said.

But it’s coming, Levesque said. “I’m really certain that we’re going to establish that capability” in another public-private partnership, similar to the way the Natrium power plant demonstration is being built.

Once built, the plant will be turned over to Rocky Mountain Power, a division of Berkshire Hathaway Energy’s PacifiCorp, to operate.

There, it will become part of Rocky Mountain Power’s decarbonization plan.

Coal-fired plants like the Naughton facility in Kemmerer “have benefited our customers for decades with very low cost power,” Gary Hoogeveen, president and CEO of Rocky Mountain Power, said Tuesday. “And we appreciate that. But times are changing,” Hoogeveen said.

“External requirements from the federal government, state governments, regulatory agencies are going to require that we change and we’re going to need to decarbonize and as we go down that path, we see the Natrium project as being incredibly valuable to our customers.”

“Wyoming is a tremendous wind resource state,” Hoogeveen said. And so far, Rocky Mountain Power has built 2,000 megawatts of wind power capacity in Wyoming, and that’s going to grow. “We expect to build many more thousands of megawatts of wind capacity in the state.”

But the nuclear power plant in Kemmerer will be a key bridge for the state, Hoogeveen said.

“It is a great spot for absorbing the intermittency of of the renewable resources and using the storage that’s built in that is so incredibly valuable to us,” he said.

Environment

As Texas power demand surges, solar, wind and storage carry the load

Published

5 hours ago

October 24, 2025

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As Texas power demand surges, solar, wind and storage carry the load

Texas solar battery storage — Photo: Avangrid

Electricity demand is surging in Texas, and solar, wind, and battery storage are meeting it.

According to new data from the US Energy Information Administration (EIA), electricity demand across the Texas grid managed by the Electric Reliability Council of Texas (ERCOT) hit record highs in the first nine months of 2025. ERCOT, which supplies power to about 90% of the state, saw demand jump 5% year-over-year to 372 terawatt hours (TWh) – a 23% increase since 2021. No other major US grid has grown faster over the past year.

Solar and wind keep ERCOT’s grid steady

The biggest growth story in Texas power generation is solar. Utility-scale solar plants produced 45 TWh from January through September, up 50% from 2024 and nearly four times what they generated in 2021 (11 TWh). Wind power also continued to climb, producing 87 TWh through September – a 4% increase from last year and 36% more than in 2021.

Together, wind and solar supplied 36% of ERCOT’s total electricity over those nine months. Solar, in particular, has transformed Texas’s daytime energy mix. From June to September, ERCOT solar farms generated an average of 24 gigawatts (GW) between noon and 1 pm – double the midday output from 2023. That growth has pushed down natural gas use at midday from 50% of the mix in 2023 to 37% this year.

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Battery storage is filling in the gaps

Batteries charge during the day when wind and solar generation are the highest, and they produce electricity when generation from wind and solar slows down. ERCOT began reporting battery output separately in October 2024 in its hourly grid data, and it’s clear that batteries are now helping to smooth out evening peaks. This past summer, batteries supplied an average of 4 GW of power around 8 pm, right as solar production dropped off.

Natural gas is flatlining

Natural gas is still Texas’s dominant power source, but it isn’t growing like it used to. Between January and September, gas-fired plants generated 158 TWh of electricity, compared to 161 TWh in 2023. Gas comprised 43% of ERCOT’s generation mix during the first nine months of 2025, down from 47% in the first nine months of 2023 and 2024.

More demand growth ahead

The EIA expects Texas electricity demand to keep rising faster than any other grid in the US. In its latest Short-Term Energy Outlook, the EIA projects ERCOT’s demand will climb another 14% in the first nine months of 2026, reaching 425 TWh. That means Texas will need even more solar, wind, and battery storage to keep up with its breakneck growth.

The 30% federal solar tax credit is ending this year. If you’ve ever considered going solar, now’s the time to act. To make sure you find a trusted, reliable solar installer near you that offers competitive pricing, check out EnergySage, a free service that makes it easy for you to go solar. It has hundreds of pre-vetted solar installers competing for your business, ensuring you get high-quality solutions and save 20-30% compared to going it alone. Plus, it’s free to use, and you won’t get sales calls until you select an installer and share your phone number with them.

Your personalized solar quotes are easy to compare online and you’ll get access to unbiased Energy Advisors to help you every step of the way. Get started here.

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Environment

Chevy Equinox EV and another Cadillac electric SUV recalled due to tire defect

Published

6 hours ago

October 24, 2025

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Chevy Equinox EV and another Cadillac electric SUV recalled due to tire defect

GM is recalling nearly 23,000 Chevy Equinox EV and Cadillac Optiq models due to a defect where the tire tread could fall off.

GM is recalling more Chevy Equinox EV models

In a letter sent to the National Highway Traffic Safety Administration (NHTSA), GM said it has decided to issue a safety recall for certain Chevy Equinox EV and Cadillac Optiq models from model years 2025 to 2026.

This time, it isn’t necessarily GM’s fault. The vehicles may be equipped with 21″ all-season tires that Continental Tire is recalling.

According to Continental, the tires were produced during the week of October 6, 2024, and may have a defect where the tire tread could partially or fully detach. The records show the defect is due to a nonconforming tread base rubber compound.

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Owners of affected vehicles may notice unusual tread wear or bulging, vibration while driving, or tire noises. GM is unaware of any incidents related to the defect, but is issuing the recall out of an abundance of caution.

Cadillac-Optiq-EV-recall — Cadillac Optiq EV (Source: Cadillac)

On September 18, 2025, GM inspected the assembly plant and confirmed there were no suspect tires in stock. The 21″ tires come standard on RS trims and are optional on LT1 and LT2 grades.

Although GM is recalling 22,914 Chevy Equinox EVs and Cadillac Optiqs, it estimates that only about 1% of them have the defect.

The recall includes:

2026 Cadillac Optiq: 214
2026 Chevy Equinox EV: 1,832
2025 Cadillac Optiq: 3,468
2025 Chevy Equinox EV: 17,400

GM dealers will check all four tires and replace them if needed, free of charge. Dealers were notified on October 16. Owner notification letters are expected to be mailed out on December 1, 2025.

You can contact Chevrolet’s customer service number at 1-800-222-1020 or Cadillac’s at 1-800-333-4223. GM’s recall number is N252525030. Owners can also call the NHTSA hotline at 1-888-327-4236 or visit the nhtsa.gov website for more information.

The Chevy Equinox EV is now the third best-selling EV in the US, trailing only the Tesla Model Y and Model 3. Meanwhile, Cadillac’s entry-level Optiq SUV is the fifth-most-popular luxury EV. The recall is minor and only affects a small percentage of models, so it’s not expected to have a major impact.

If you want to test one of them for yourself, we can help you get started. Check out our links below to find available Chevy Equinox EV and Cadillac Optiq models near you.

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Environment

Podcast: TSLA earnings madness, Rivian layoffs, Ford pauses F-150 Lightning, more

Published

7 hours ago

October 24, 2025

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Podcast: TSLA earnings madness, Rivian layoffs, Ford pauses F-150 Lightning, more

In the Electrek Podcast, we discuss the most popular news in the world of sustainable transport and energy. In this week’s episode, we discuss Tesla’s earnings madness, Rivian layoffs, Ford pausing F-150 Lightning, and more.

The show is live every Friday at 4 p.m. ET on Electrek’s YouTube channel.

As a reminder, we’ll have an accompanying post, like this one, on the site with an embedded link to the live stream. Head to the YouTube channel to get your questions and comments in.

After the show ends at around 5 p.m. ET, the video will be archived on YouTube and the audio on all your favorite podcast apps:

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Here are a few of the articles that we will discuss during the podcast:

Here’s the live stream for today’s episode starting at 4:00 p.m. ET (or the video after 5 p.m. ET:

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