Behind a miles-long gray wall in the central Mexico town of Colón, a Microsoft data center portends the future for other data centers in the country. Unable to plug into the energy grid, it ran on gas-powered generators for at least part of the year. That Mexico’s electric grid is struggling does not bode well for a country trying to position itself as a data center hub, and which is already home to 150 data centers, including from Microsoft, Amazon Web Services, and Google. Together, they have ...