The video in the link below echoes my own personal views on the probable immediate future we as a species will experience.
https://www.youtube.com/watch?v=_I_lsZCAWi4
hhop gen 3 produces various gas products (dependant on liquid working fuel chosen) + electricity from the gravitational field energy prime mover.
hhop gen 4 produces electricity only from the gravitational field energy prime mover.
http://www.overunityresearch.com/index.php?topic=2288.0
Should such a mini ice age come to pass a habitable structure with a food growing environment will become essential.
a hhop gen 3 or 4 generator at the heart of the building, buried deep underground will provide the permanent energy source required for individual de-centralised survival.
Naturhus: An Entire House Wrapped in Its Own Private Greenhouse
http://inhabitat.com/naturhus-an-entire-house-wrapped-in-its-own-private-greenhouse/