I'd like to see them debate. All I know is my energy cost keeps going up in the UK, and we seem to have some of the most expensive energy in the world.
We do and I share your concerns.
As far as I can see pricing electricity on the marginal costs of gas has not been a good strategy. I think we should be charged the true cost of generation which is something like 8 times lower for renewables.
Have you tried switching to Agile Octopus tariff? My electricity cost has gone down 1/3rd since I did that. I also installed smart radiator thermostats, and knocked about 1/3rd off gas heating cost.