Are emissions permits regressive?

Grandfathered emissions permits redistribute income to wealthy households by creating firm rents that ultimately accrue to shareholders. Consequently they can be highly regressive, even if the poor do not have large budget shares for polluting goods. Using an analytical model, this paper estimates the burden of emissions permits borne by different income groups under control of power plant emissions of carbon, SO2, and NOx. We also compare the burden borne by poor households under permits with that under emissions taxes, performance standards, technology mandates, and input taxes. And we show how the social costs of policies differ from efficiency costs when society has aversion to inequality.