Microsoft has signed a major deal with nuclear plant operator Constellation Energy to buy power for its data centers from the energy company's Three Mile Island Unit 1 nuclear plant. Constellation plans to spend $1.6 billion to revive the Unit 1 plant, which was shut down in 2019 due to a lack of demand for nuclear energy, by 2028. Microsoft has agreed to purchase all of the power from the reactor, which promises a capacity of 835 megawatts once restored, over the next 20 years. The plant is expected to create 3,400 direct and indirect jobs, add $16 billion to Pennsylvania's GDP, and generate more than $3 billion in state and federal taxes.