I do not think this is a way to improve our ecological footprint. We will not ever use less energy tomorrow than we use today, that will simply not be happening.

If something is important, it is a good that it is also cheap. Every form energy production has some disadvantages, but we must improve here if we want to reduce our influence on climate.

Your proposal to increase prices will not make people drive or heat less, it will just put another burden on their shoulders. The well off would not change anything, poorer people will have trouble. This is not an idea I would support.