By Mike Polhamus, Vermont Digger.

Regional energy regulators want to know hot to improve a regional effort to curb carbon-dioxide pollution from electrical generators in Northeast states, and they're seeking comments from interested members of the public to aid that effort.

The Regional Greenhouse Gas Initiative, or RGGI, was enacted in 2009. It was the first cap-and-trade program for carbon dioxide emissions generated by utilities. Nine states participate in RGGI: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island and Vermont.

States, regulators and RGGI administrators are reassessing the effectiveness of the program and soliciting public comments.