The Globe and Mail reports in its Thursday edition that 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 centres and artificial intelligence. An Associated Press dispatch to The Globe says the plans come as the owner of the defunct Three Mile Island nuclear power plant in Pennsylvania said last month it plans to restart the reactor so Microsoft can buy the power to supply its data centres. 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 considered a climate solution. The demand for power is surging globally as buildings and vehicles electrify. The United States is pursuing small modular reactors, a type of nuclear reactor that can generate up to one-third the amount of power of a traditional reactor. Developers say small reactors will be built faster and at a lower cost than large power reactors.