A Trump administration plan to subsidize coal and nuclear energy would cost US taxpayers about $10.6bn a year and prop up some of the oldest and dirtiest power plants in the country, a new analysis has found. The Department of Energy has proposed that coal and nuclear plants be compensated not only for the electricity they produce but also for the reliability they provide to the grid. The new rule would provide payments to facilities that store fuel on-site for 90 days or more because they are “indispensable for our economic and national security”. Just a handful of companies, operating about 90 plants on the eastern seaboard and the midwest, would benefit from the subsidies, the report found.