Three Mile Island is reopening its Unit 1 reactor in Pennsylvania and selling power to Microsoft
The nuclear generating station is located on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.
LONDONDERRY TOWNSHIP, Pennsylvania -- Three Mile Island, the site of worst nuclear disaster in the United States, is reopening and will exclusively sell the power to Microsoft as the company searches for energy sources to fuel its AI ambitions.
The nuclear generating station is located on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.
Constellation Energy announced Friday that its Unit 1 reactor, which closed five years ago, is expected to be revived in 2028, dependent on Nuclear Regulatory Commission approval. Microsoft will purchase the carbon-free energy produced from it to power its data centers to support artificial intelligence.
Financial terms of the 20-year agreement, which Constellation called the largest ever, weren't disclosed.
"Powering industries critical to our nation's global economic and technological competitiveness, including data centers, requires an abundance of energy that is carbon-free and reliable every hour of every day, and nuclear plants are the only energy sources that can consistently deliver on that promise," said Constellation CEO Joe Dominguez in a press release.
Clean energy advocates and businesses alike are looking towards nuclear energy as a source of zero-carbon power that is a reliable baseload source. A big pro is that nuclear is able to stay on at all times of the day and night, unlike wind and solar.
However, nuclear has drawn criticism for environmental groups for decades for its waste. The US still has no permanent repository for that waste, instead storing it at over 70 operating and shuttered plants around the nation.
Reopening of the Unit 1 reactor will add 3,400 direct and indirect jobs and add more than 800 megawatts of electricity to the grid, according to Constellation. It's also expected to add $16 billion to Pennsylvania's GDP, where the plant is located.
Shares of Constellation (CEG) soared 7% in premarket trading.
Three Mile Island is best known for being the most serious accident at a commercial nuclear power plant in US history when it experienced the partial meltdown of one of its two reactors. Unit 2 reactor, which is adjacent to Unit 1, has remained closed since 1979 following the disaster.
Demand for energy is expected to surge as tech giants need more sources of power to fuel their AI needs, especially nuclear power, which is carbon-free and helps them maintain their lofty climate goals.
The move is also enabled by President Joe Biden's climate bill, which contains billions in tax credits to incentivize clean energy from nuclear in addition to wind, solar and clean hydrogen. The Biden administration and Congress have also poured billions into funding to stop old plants slated for closure from shutting down.
"This agreement is a major milestone in Microsoft's efforts to help decarbonize the grid in support of our commitment to become carbon negative," Bobby Hollis, vice president of energy for Microsoft, said in the release.
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