Amazon, Google make dueling nuclear investments to power data centers with clean energy

Amazon on Wednesday said that it was investing in small nuclear reactors, coming just two days after a similar announcement by Google, as both tech giants seek new sources of carbon-free electricity to meet surging demand from data centers and artificial intelligence.

The plans come as the owner of the shuttered Three Mile Island nuclear power plant said last month it plans to restart the reactor so tech giant Microsoft can buy the power to supply its data centers. All three companies have been investing in solar and wind technologies, which make electricity without producing greenhouse gas emissions. Now they say they need to go further in the search for clean electricity to meet both demand and their own commitments to cut emissions.

Nuclear energy is a climate solution in that its reactors don’t emit the planet-warming greenhouse gases that come from power plants that burn fossil fuels, such as oil, coal and gas. The demand for power is surging globally as buildings and vehicles electrify. People used more electricity than ever last year, placing strain on electric grids around the world. Much of the demand also comes from data centers and artificial intelligence.

The International Energy Agency forecasts that data centers’ total electricity consumption could reach more than 1,000 terawatt hours in 2026, more than doubling from 2022. Estimates suggest one terawatt hour can power 70,000 homes for a year.