Microsoft and nuclear plant owner Constellation have entered into to an unprecedented deal to restart the closed Three Mile Island by 2028 to power its data centres.

Microsoft will purchase as much power as possible from its 880 MW reactor over 20 years for prices rumored to be above $100 per MWh.

Most famous for its 1979 meltdown, TMI closed in 2019 because of cheap fossil fuels and tech companies refusing at the time to consider buying its electricity to meet clean energy goals.