I wonder if you can have the same plant act as both a propane producer at times of extra power available on the grid, but also generate electricity when there i

I wonder if you can have the same plant act as both a propane producer at times of extra power available on the grid, but also generate electricity when there is a shortage. Then the power density and exotic materials are irrelevant as the plant already exists. You'd use the plant mainly to make propane, just run it backwards when electricity prices were the highest.