That's not really an equivalent example because there isn't an alternative to electricity where as there is an alternative to driving petrol powered vehicles (electric vehicles, public transport, car share, bicycle, walk, etc).

I also don't appreciate your "Maybe by that logic we should allow coal-fired boilers again?" comment when I was very clear in my post - the one you're directly replying to - that we should be focusing on greener forms of electricity creation and energy consumption. If that does also drive up electricity prices then so be it. However artificially increasing electricity prices and expecting the market to do the honourable thing seems like you're trying to solve the problem by changing the end variable rather than fixing the root cause itself and letting market prices adjust accordingly.