The World Economic Forum's list of 'sustainable technologies' for the forthcoming year. Some seem farfetched like Online Electric Vehicles, due to the large infrastructural investment required. More hopeful is the possibility of efficient and profitable nuclear power, using new designs to remove the long-tail liabilities that have always required nationalisation. With shale, I don't see this being useful for another twenty years.
None of it will sustain itself in 2013.