Three Mile Island nuclear turning point as Big Tech influence grows

MIDDLETOWN, Pa. — The owner of the Three Mile Island nuclear power plant is embarking on an ambitious plan to restart operations before the end of the decade, marking the latest chapter in the history of a plant that symbolizes the future promise, past struggles and lingering fears of nuclear energy in the United States.

The twin cooling towers that stretch hundreds of feet above the Susquehanna River just south of Middletown, Pennsylvania, went dormant in 2019 after billowing water vapor into the sky for four decades. Its owner at the time, Exelon, permanently shut down the Unit 1 reactor, citing “severe economic challenges.”

Unit 1 is one of a dozen reactors that closed in the U.S. over the past decade as nuclear industry struggled to compete against cheap and abundant natural gas. But the fortunes of the industry have shifted dramatically this year as deep-pocketed technology companies turn to nuclear power to meet the tremendous electricity consumption of their future business: artificial intelligence.

Constellation Energy, the plant’s current owner, plans to restart Unit 1 in 2028, subject to monitoring and approval by the Nuclear Regulatory Commission. Constellation, headquartered in Baltimore, spun off from Exelon in 2022; it has the nation’s largest fleet, or group, of nuclear power plants, operating 21 of the 94 reactors in the U.S.

“This is a plant that we ran and ran very well,” plant manager Trevor Orth told the NRC at an Oct. 25 meeting. “We shut it down. We understand how we shut it down, and we have a good idea of how we’re going to restart this.”

While Constellation will restore the plant, it will ditch the name Three Mile Island. The plant will be rechristened the Crane Clean Energy Center, after the late CEO of Exelon, Chris Crane. Constellation said the restart will cost $1.6 billion, financed by the company’s own funds.

(Take a deeper look inside the Three Mile Island nuclear power plant here.)

Microsoft has made the restart of Unit 1 possible through an agreement to purchase the full electricity output from the plant for 20 years, a sign of the growing role the tech sector is playing in shaping the future of the U.S. power industry.

Microsoft said the agreement is part of its strategy of meeting the growing electricity needs of its data centers with power that is free of carbon dioxide emissions in an effort to mitigate the impact of its business on the climate.

Those data centers are playing a critical role in the U.S. economy, housing servers that run the cloud computing that businesses and consumers now rely on for life’s digital daily tasks….