Solar cell design with over 50% energy-conversion efficiency

[NeoGreen]

14. What effect will the...

...decentralization of the current model of power generation to local residential/commercial renewable generation have on the economics of maintaining large electric point-production facilities and their inherent ~50% line loss?

That is to say, will the removal of the bulk of distribution line-loss have a significant positive effect toward the transition to local renewable production? Will the local production be significant enough that our overall net production/consumption of electricity could be reduced through decentralization? If so, should planning for local (decentralized) micro networks and storage be promoted? And if so, how can we leverage that advantage to preferentially target the current production modes that release the most carbon.

On a side note, is carbon the only/best metric? Should we calculate the amount of life cycle methane released by NG and its effect on climate change? Should the costs of Mercury (Hg) and other pollutants (i.e. nuclear wastes) be included in the equation in determining the worst fuels and the rank of the producers of those wastes?