Here's a suggestion...
...solve today's problems today. Today's energy problems are fuel poverty and the real risk that the lights will start going out because we have an impending energy gap.
Whatever fiddling around with spreadsheets you want to do the uncertainties are too great. It's open to both halves of the debate to change a number here or there to make the answer support their arguments. And why they are all arguing about how many angels can dance on the head of a pin the opportunity to address some real problems are passing us by.
Our descendants will have a better chance of dealing with there problems if they inherit a strong infrastructure and economy. If all the effort that was going into fiddling around with mitigations for a disaster that might not happen had gone into research into, for instance, new ways of using the limited hydrocarbon resources we have we would be in a better position in 100 years.
It is depressing that this is not going to happen. It seems everyone but Eastern Bloc and China are prepared to sacrifice their futures to the opportunity to keep the populace in fear and dependency.
BTW, the first person who says 'consensus' loses the argument, K?