With the new rules of the EU ETS, involving cancellation of allowances, cumulative emissions are no longer fixed but depending on the market outcome. Perino (2018) showed that additional abatement effort can reduce cumulative emissions if it occurs within a few years. This article shows that Perino’s result will be reversed, i.e., cumulative emissions increase, if the abatement effort is at a later year, or permanent. Thus, a new green paradox has emerged.