In the real world energy isn’t always fungible. The location of the energy can be an important factor in something’s overall efficiency. If you need the end pr

In the real world energy isn’t always fungible. The location of the energy can be an important factor in something’s overall efficiency. If you need the end product at a particular location, the transport costs can overwhelm any differences in efficiency. The same also applies if you have excess energy in a particular location that you want to use. In either case, the transport costs can make using the less efficient process, the more energy efficient choice overall.