CALGARY — Two years after Meta executives met Alberta officials at the company’s Silicon Valley headquarters—where, the province’s technology minister recalled, “they had not yet heard of Alberta”—the tech giant said it is prepared to break ground on a $13 billion data-centre project northeast of Edmonton that will be its largest outside the U.S. The sprawling one-gigawatt campus will be powered by Pembina Pipeline’s Greenlight Electricity Centre, a major natural-gas power plant that received...