I was pleased to see this piece in the WSJ 13 Aug 2009. For climate change policy, even the economists who developed the concept, Thomas Crocker and John Dale, recommend emissions taxes instead of cap-and-trade for cutting fossile fuel consumption.
(…) “I’m skeptical that cap-and-trade is the most effective way to go about regulating carbon,” says Mr. Crocker, 73 years old, a retired economist in Centennial, Wyo. He says he prefers an outright tax on emissions because it would be easier to enforce and provide needed flexibility to deal with the problem.
(…) Mr. Crocker sees two modern-day problems in using a cap-and-trade system to address the global greenhouse-gas issue. The first is that carbon emissions are a global problem with myriad sources. Cap-and-trade, he says, is better suited for discrete, local pollution problems. “It is not clear to me how you would enforce a permit system internationally,” he says. “There are no institutions right now that have that power.”
(…) The other problem, Mr. Crocker says, is that quantifying the economic damage of climate change — from floods to failing crops — is fraught with uncertainty. One estimate puts it at anywhere between 5% and 20% of global gross domestic product. Without knowing how costly climate change is, nobody knows how tight a grip to put on emissions.
In this case, he says Washington needs to come up with an approach that will be flexible and easy to adjust over a long stretch of time as more becomes known about damages from greenhouse-gas emissions. Mr. Crocker says cap-and-trade is better suited for problems where the damages are clear — like acid rain in the 1990s — and a hard limit is needed quickly.
“Once a cap is in place,” he warns, “it is very difficult to adjust.” For example, buyers of emissions permits would see their value reduced if the government decided in the future to loosen the caps.
(…) Another economist, David Montgomery, advanced their ideas in the 1970s, converting their theories into the complex mathematical formulas to demonstrate that they weren’t merely an idea but were also economically feasible. Mr. Montgomery, too, is a skeptic of cap-and-trade for greenhouse gases. He prefers an outright tax.
“You get huge swings in carbon prices with a cap, which creates more volatility and uncertainty for business,” he says.
David Montgomery is exactly correct. To swing utilities away from more coal-fired plants to nuclear generation they just need confidence in their return on investment projections. The simple fee-and-dividend policy gives them predictable future prices on their inputs.
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