leftyg brazil just discovered two huge oil elephants which raises their already huge oil reserves 5X -- believe me there is not going to be ANY tariff on this oil -
I think nuclear might be one bit of the puzzle - envornmental groups actually consider nuclear 'low carbon'
but with the most nuclear industry friendly government we have had in 40 years - you don't see anyone really rushing to built new plants - memories of 3 mile island and chernobly have made a nimn attitude prevalent in US.
I think our first step is reducing demand - it worked in the 70s and can work again - give mega tax breaks to auto industry to develop fuel effecient cars - aggressively raise CAFE standards and give big tax breaks to consumers to buy fuel efficent cars.
We reduced oil usage 30% from late 70s to early 80s - if we did that today - our economy would boom and oil prices would tank.
so many exciting technologies happening in auto industry we could easily achieve this goal. Just need some political leadership