I, certainly echoing others and not forming my opinion independently, have always
thought that we could, collectively, do a much better job on energy efficiency.
The linked article, despite discounting the need for continuing investment in
nuclear power (I don't think the goals are fully achievable, but they are good goals
nonetheless), describes what energy efficiency could do for the country thusly:
"Due in part to a significantly increased emphasis on energy efficiency, power sector
carbon dioxide (CO2) emissions by 2020 would fall 25 percent below 2010 levels; by 2050,
such pollution would be 81 percent below 2010 levels. Under status quo trends, CO2 emissions
would grow 28 percent from current levels by 2050."
If those numbers are achievable, it will take uniform will from the populace to get
there. But we should.