Crikey Timbo, you're worse then the researchers of QI when it comes to a subject. Most of the answers you've given me are theoretical, don't yet exist or are best case scenarios rather then actual alternatives.
Some of the renewables mentioned are nothing more then PR hype from a 'green' industry desperate to get their hands on Government money. A range of renewable technologies supplying all our energy needs is certainly attractive, but so is saying, in the future we'll have rocket boots, moon bases and free chocolate.
How do you realistically deal with the demand now or in 5 years time? Having said that, my tinfoil conspiracy hat is telling me that there is plenty of oil and gas but it's being controlled by an Illuminati style cartel using the 'scarcity' of resources to line their pockets and effect political change.
I try not listen to my tinfoil hat, I think he am mad.