To start, you put it in warehouses. Nuclear is an extremely dense fuel, so you don't need much space. I expect that for the same energy produced, you'll have or

To start, you put it in warehouses. Nuclear is an extremely dense fuel, so you don't need much space. I expect that for the same energy produced, you'll have orders of magnitude less waste than, for example, windmill blades, which also can't be recycled. The biggest problem is radioactive concrete from old plants, but it isn't highly radioactive.