Interesting discussion of energy tax preferences, from libertarian perspective -- they would get rid of all tax preferences. That will never fly of course, Congress' main job is to define tax preferences. Some of the logic is good. Their view includes the need for clean environment but via regulations not via tax policy. Some of you might not agree with the Libertarian answers, but you might agree with the questions/logical argument structure presented. They touch on national security, "infant" industries (eg; EV, biomass fuels), oil industry subsidies, etc. And they give a clear answer to each of those issues.
First I would say that Cato calls itself libertarian, but many libertarians disagree with cato on a number of issues. When it comes to oil and coal subsidies, just about every libertarian will agree that they should be ended. Many Republicans and Democrats just love these things. Let me add a couple of caveats though. Many libertarians do find a place for government here, just not the same place congress has put into place. Oil represents a market failure. Americans use more of it than the invisible hand would otherwise allocate. Government should remove the specific subsidies for oil, but not remove the general ones for manufacturing. That would be punishing refiners, and we would have less refining capability. To reduce use many libertarians but not all would add an oil tax, to cover some of the externalities. One problem with bills in the past is as soon as these taxes were added the money was spent. Part of the tax could make up for the shortfall in road and bridge funding now taken from the general fund. Part could reduce medicare payfoll taxes as one of the externalities is health care. For coal, some of the biggest R&D is clean coal technology. Given how much coal china is likely to use in the future, and the pollution externality, Some would continue to fund research. The bulk of libertarians would cut it off though. Many of the pollution externalities can be taken care of as part of regulation including tightening minimums, removing grandfathering, and reducing caps on cap and trade pollutants. When we look at wind power, it now looks like a mature industry. But many don't have the choice from their utilities to have wind. That could be fixed in regulation, or renewables added. Wind probably no longer needs to be subsidized after the tax credits run out this year. Solar costs in germany are much lower than the US. Part of the problem is government red tape. If the country standarized regulation and made it easier costs would drop, and by 2015 solar likely would not need federal subsidies. The government is with one hand helping solar, then with the other making it hard to install.