Gore's speech was not well received in many quarters because knowledgeable people don't believe his 100% goal is even remotely achievable. The former vice-president no longer holds office, so he is not accountable to voters. Gore is more like Moses, who has gone to the mountaintop to receive God's 11th commandment that thou shalt not burn fossil fuels. Unfortunately, our civilization was founded on the abundant energy fossil fuels offer. We can not simply undo that dependency in a decade as we near the top of a growth curve that was made possible by burning coal, oil and natural gas.
Gore is motivated by the dangers of anthropogenic climate change. Some of these dangers are real, but unlike some who have started to realize that IPCC doomsday carbon emissions scenarios are built upon unrealistically high estimates for remaining recoverable fossil fuels (perhaps including coal) and future economic growth, Gore does not acknowledge any limit to the disaster that humankind faces as the Earth warms. Gore's unassailable assumption is that we will experience the Cretaceous "hot house" all over again. In energy matters, the former Vice President does not feel obliged to understand the issues. He just knows that burning fossil fuels is a bad thing.
The recent Nobel Prize winner has painted us all into a corner. Those of us who say "this can't be done" are naysayers, or to use a quaint phrase of an earlier era, nattering nabobs of negativism. I think setting an ambitious goal of a 15% conversion of the grid to wind, solar, and the rest by 2020 would have spurred us all to action. The feasibility of a 20% wind powered grid was vouched for in the Department of Energy's 20% Wind Energy By 2030.
http://energybulletin.net/node/46015After Gore's speech, suggesting a more modest goal will be regarded as timid or worse—defending reality will be portrayed as cynical corporate self-interest by climate extremists. And it is self-interest, for almost every single one of us is invested in an electricity grid that meets our demands, not just coal or natural gas companies. Those few who say otherwise must enjoy living in the dark or off the grid in solar/wood powered houses. Well-compensated climate change activists drive their cars and live on the grid, so there is a large element of hypocrisy at work here which is justified by elaborate fantasies about replacing fossil fuels in unrealistic time frames.