Greenhouse Gases and Global Climate. Global warming is linked to the accumulation of a variety of gases in the atmosphere.
Year Tax rateEst. CO2 decline
2015 $15/ton CO2 5%
2020 $20/ton CO2 9%
2030 $50/ton CO2 29%
1. How will they compare in terms of costs to consumers? If permits are given out free, won’t firms hold the line on prices and not pass on costs?
2. How does a cap-and-trade compare to a tax in terms of tax revenues? Depends on whether some or all of the permits are auctioned or sold and at what price
3. How do they compare in terms of certainty?