> The issue is steel, which is a cornerstone of "green" energy. That steel must be made with metallurgical coal and while there are alternative processes, they

> The issue is steel, which is a cornerstone of "green" energy. That steel must be made with metallurgical coal and while there are alternative processes, they require hydrogen. That's not really much of a problem. How much steel is going to be used for energy generation compared to the steel that's used by basically everything else, including construction? That's not a consumable (barring any hardware losses) and emissions will be offset across the lifetime of the generator.