as always, the lessons are never learned, bigger is not always better, a single point of failure is all you get with these options, take a leaf out of natures book, or personal computer growth book, many millions of cheap micro-generation units of all types, and a single universal interconnect are the way to go.
think about it, just about every single peace of kit inside your house can be replaced today with a 12V DC equivalant bit of kit if you can supply it with enough amps/Watts, LCD Tv's and monitors, laptop PCs as powerful as a desktop can be made today,small scale 12V fridges/freezers exist today, make them bigger or convert the current 240AC suppy to 12V, its all doable TODAY.
the thing thats missing is that ability to pop down your local superstore and buy these cheap Micro-Generation units, be it all forms of solar,wind,stirling engine,or my favourate micro-Fuel Cell in a Box: hydrogen and fuel cell
PEM electrolyser technology using on site easy made distilled water ,rather than the methanol fuel supply the big world companys are trying to convince you to use, so they can keep a lock on the distribution and mass short term profits from this higher cost and far more complex to produce fuel.
a mass produced cheap Micro generation unit of whatever type,that can run one single home Appliance plus,and be universely and easly linked together to push the excess generation into storage, and/or easly pluged to the local grid is whats needed, the more you buy, the more money you personally save long term.
make it for a fair price and available everywere ,and you will soon have everyone buying them to run that TV, PC, wireless router, or fridge etc.
today it's not available to the masses or at a good single self contained unit or price, so its not going anywere for the masses right now, but if i could buy them and simply plug it in, i would and be running this wireless PC and network off them right now.
http://www.h-tec.com/education/engli...home.asp?id=31
http://www.h-tec.com/education/engli...her.asp?id=315
"The possible applications for fuel cells can be broken down into 3 major types. Different applications require different kinds of fuel cells.
Stationary applications
These applications involve generation of both power and heat, and can range from home units (output starting at 2 kW) to block-type units that supply entire residential areas (with outputs in the MW range).
...
"