You don't have to burn anything. You can store energy and release it later with batteries and hydraulic pumps (maybe not enough to take ypu all the way just yet

You don't have to burn anything. You can store energy and release it later with batteries and hydraulic pumps (maybe not enough to take ypu all the way just yet, but a lot further than where we currently are). Although, if you do want to burn something, you can burn biofuel (basically wood). The UK's only company that does this, Drax, are really not great ecologically, but just focusing on cost, diversifying from gas to a mix with more biofuel would have huge benefits.