Which party would you vote for to get this? Only one party is arguing to drill for more oil and gas (whether nationalised or not) and that's Reform...
Unfortunately nationalisation has nothing to do with it. For 20 years we have chosen to be virtuous instead of taking advantage of the resources available. Gas was once very cheap and so it became the main electricity source alongside eliminating coal. Gas prices unfortunately increased massively during COVID and the Ukraine War.
Labour, Greens and Lib Dems are pushing for renewables and decreased dependency on oil/gas which is great but it means that we have to accept high energy prices and decreased energy security for now. It also means that the money that could be earnt from oil/gas (as Norway has) will eventually go down to nothing as we won't produce anything.