Effective enforcement of a transferable emissions permit system with a self-reporting requirement

We propose an enforcement strategy to achieve complete compliance in a tran sferable emissions permit system when firms are required to provide reports of their own emissions. Like the literature on self-reporting in the enfor cement of standards, we find that self-reporting can conserve monitoring co sts, but for a different reason. In addition, we show that targeted monitor ing-the practice of monitoring some firms more closely than others-is not n ecessary in a competitive permit system. Furthermore, tying penalties to th e equilibrium permit price can stabilize the monitoring effort necessary to maintain full compliance in the face of permit price fluctuations.