…That’s according to the Boston-headquartered Acadia Center, which in a report published Tuesday said that while RGGI meets the criteria set out in the final version of the EPA’s Clean Power Plan (CPP) released this summer, the scheme’s cap and how quickly it decreases needs to be modified, as does the market’s supply safety valve.

The finalised CPP rules encourage the use of multi-state, mass-based emissions trading schemes to help meet a national target to cut power plant emissions by 32% below 2005 levels by 2030…