We already pay for energy by usage, and are taxed on that, just like we are for fuel for our cars. A fairer way to discourage over use would be to just use the tax that is already there, that doesn’t require any extra administration either, so won’t add costs. More you use, the more you pay, completely fair.

In my opinion all of the “energy” tax should be used to fund renewable/alternate power supply projects. If there was enough venture into that it might even be possible to avoid building one or two nuclear power plants.