Some of that is industrial use, but yes the US also very inefficient at multiple levels.
For example in other contexts you'll see mention of a preference for single family dwellings. Unavoidably all the external walls of that property lose heat in winter. Even if they were well-insulated, which they usually are not, they're losing. Britain has a lot denser housing, with terraces (most properties share walls on each side with another home) or at least semi-detached (sharing one wall) being popular layouts. Obviously if the far side of the wall is just another home you're not really losing heat.
The US divides 1084.37GW among its 330 million people, which comes out at 3.2kw each.
There has to be significant room for efficiency savings there.