Three Mile Island Nuclear Plant Could Power Microsoft Data Centers

The proposal to restart one unit of the infamous plant, which suffered a partial meltdown in 1979, still requires federal, state, and local approvals.

1 minute read

September 24, 2024, 5:00 AM PDT

By Diana Ionescu @aworkoffiction


View of Three Mile Island nuclear power plant with four reactor towers on a sunny day.

A 1979 partial meltdown at the Three Mile Island nuclear power plant in Pennsylvania released radioactive gases into the environment. | George Sheldon / Adobe Stock

A proposal from Constellation Energy and Microsoft to restart a unit of the Three Mile Island nuclear power plant faces a series of regulatory hurdles before the project could become a reality. 

According to a Reuters article, Unit 1 of the plant was retired in 2019 for financial reasons. “Constellation plans to spend about $1.6 billion to revive the plant, which it expects to come online by 2028.” Last year, nuclear plants produced almost one-fifth of total U.S. electricity.

“A relaunch of Three Mile Island, which had a separate unit suffer a partial-meltdown in 1979 in one of the biggest industrial accidents in the country's history, still requires federal, state and local approvals,” the article notes. Constellation has not yet filed an application to restart the plant, but a deal with Microsoft signals momentum.

Tech companies are eyeing nuclear energy as one way to meet the rapidly growing demand for energy for data centers and artificial technology applications. Under its deal with Constellation, Microsoft will buy power from the Three Mile Island plant for 20 years. Microsoft also recently signed a similar deal with Washington-based fusion company Helion, while a deal between Amazon and Talen Energy is being challenged by a group of utilities who allege that the deal could reduce the reliability of the grid or raise costs for consumers.

Friday, September 20, 2024 in Reuters

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Close-up of "Apartment for rent" sign in red text on black background in front of blurred building

Trump Administration Could Effectively End Housing Voucher Program

Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

April 21, 2025 - Housing Wire

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 23, 2025 - Diana Ionescu

Ken Jennings stands in front of Snohomish County Community Transit bus.

Ken Jennings Launches Transit Web Series

The Jeopardy champ wants you to ride public transit.

April 20, 2025 - Streetsblog USA

View of Washington state capitol dome in Olympia, Washington at golden hour.

Washington Legislature Passes Rent Increase Cap

A bill that caps rent increases at 7 percent plus inflation is headed to the governor’s desk.

April 29 - Washington State Standard

Low view of Glendale Narrows section of Los Angeles River with concrete bottom and cloudy storm sky over head.

From Planning to Action: How LA County Is Rethinking Climate Resilience

Chief Sustainability Officer Rita Kampalath outlines the County’s shift from planning to implementation in its climate resilience efforts, emphasizing cross-departmental coordination, updated recovery strategies, and the need for flexible funding.

April 29 - The Planning Report

Grandparents sitting on bench with young girl and boy, girl holding ball and boy holding ukelele.

New Mexico Aging Department Commits to Helping Seniors Age ‘In Place’ and ‘Autonomously’ in New Draft Plan

As New Mexico’s population of seniors continues to grow, the state’s aging department is proposing expanded initiatives to help seniors maintain their autonomy while also supporting family caregivers.

April 29 - Source NM