Over at Holistic Politics, I have updated my chapter on cheap and pleasant ways to fight global warming.
In particular, I have incorporated more recent tax and energy statistics for my calculations of what carbon tax rates are needed to replace either the income tax or FICA and the impact on energy prices. Assuming no immediate conservation, a $0.67/kg tax on fossil fuel carbon could replace the income tax. This translates roughly into a $2 hike in gasoline prices and a $0.106 hike in the cost of a kilowatt hour of electricity. In actual practice, we'd have to go with higher rates to offset the effects of conservation.
If people conserve too much, completely replacing the personal income tax with a carbon tax would be impossible without deep spending cuts. But there are other possible uses for a carbon tax: deficit reduction, cuts in other taxes or funding a Citizen's Dividend. To this end, I added some carbon tax calculators so you can design your own carbon tax.