> on the current marginal damage done by carbon dioxide emissions as well as on
> the cost to cleanup. Take the minimum of those two values and just tax the
> emissions at that rate, plus maybe a small percentage markup, right from the start.
The research has been done: http://www.jbs.cam.ac.uk/research/working_papers/2011/wp1109.pdf
It says the US should pay $250/tonne of CO2. I'm sure this would be high enough to change behaviour, but imagine the political system capable of putting this in place. I think subsidising renewables and CCS directly to try to make them cheaper than (unabated) fossil fuels, with a lower carbon tax, is more likely to work.