The United States is making an unprecedented attempt to revive three shuttered nuclear plants to meet rising energy demand, including from large-scale data centers. No commercial nuclear reactor is known to have resumed generating electricity after beginning the decommissioning process that takes one out of service, though some reactors have restarted after long outages. The Department of Energy is lending as much as $4.4 billion to restart the Palisades Power Plant in Michigan, the Crane Clean Energy Center on Pennsylvania's Three Mile Island and the Duane Arnold Energy Center in Iowa to restore a combined 2.25 gigawatts of electricity, which...