"...carbon must be taxed if firms are to invest in long-term, eesvnpixe, technology-heavy projects such as nuclear plants, cleaning up coal and taming renewable sources of power.also, In a rational analysis, wind and solar are non-starters, bio-mass won't scale, even hydro doesn't make the cut (capacity factor of 52%). Only advanced nuclear and geothermal are cheap enough, reliable enough, and carbon free. They're even cheaper than advanced coal, that 5% capacity factor difference gives the edge to advanced nuclear.No, carbon taxes aren't necessary. But the rational choice won't be taken, because of public irrationality.