Why do economists get excited about the notion of a carbon tax? Why is that a policy that always comes up as an efficient policy if you’re concerned about climate change? What is the selling point, the elevator pitch, for a carbon tax, generally?
Shuting: That’s an excellent question, I think generally economists are very supportive of a carbon tax as a quote-unquote “stick approach,” as opposed to a carrot, like the expensive provisions, clean energy credits in the Inflation Reduction Act [IRA].
Right now we’re all carrot. We seem to be doing a lot of carrots.
Shuting: Yes, a lot of it, and I think one major reason that stands out is the efficiency argument, that it’s efficiently incentivizing consumers and businesses to find the most flexible and least-costly ways to decarbonize. You just have to determine the price per ton of emissions and you’re pricing emissions directly. It’s up to the businesses to find the easiest and least costly way to decarbonize, as opposed to the clean energy tax credits, in the Inflation Reduction Act. A lot of work needs to be done on the regulator side. It might need to be done sector by sector, the technology types that are used to requalify for certain tax credits, or to look at the performance standards that would incentivize businesses to improve their decarbonizaion efforts. So it’s much more direct than tax credits, than carrots. Also, it can move really fast economy-wide. Compared to the tax credits, you really have to do it sector by sector and be very prescriptive.
With the passage of the Inflation Reduction Act, a lot of time was spent figuring out which technologies, are they going to favor these technologies, is this tax credit going to be technology-neutral, which lends it to the criticism that, ultimately, you’re having legislators, and staffers, and bureaucrats figuring out which are the “good” technologies, which are the “bad” technologies, where, under this system, it’s “may the most efficient technological fix win.”
Shuting: You hit a really, really important point, Jim. The technology-neutral is a key part of why a lot of economists are so fond of a carbon tax, as opposed to tax credits, because when you’re pricing per ton of emissions directly, regardless of the way—it could be hydrogen, it could carbon capture, it could nuclear, as long as you get there, it makes sense for businesses’ long-term investment plan, you can do it; versus the tax credits, it’s basically regulators cherry picking winners and losers, deciding, “Oh, this technology, we think it’s more promising than the other ones.