A federal appeals court Friday threw out the 2013 EPA rule exempting diesel generators providing demand response from air emissions limits.

This week's state briefs include news on Delaware, Illinois, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, North Carolina, Texas and Wisconsin.

Supporters and critics of the takeover of Pepco by Exelon are churning out newspaper opinion pieces, resolutions and public relations campaigns as the last holdouts to the deal approach deadlines to render decisions.

This week's state briefs include news on Connecticut, Delaware, Indiana, Iowa, Maryland, New Jersey, North Dakota, Ohio and Pennsylvania.

This week's state briefs include news on Arkansas, Delaware, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, North Carolina, North Dakota and Texas.

This week's state briefs cover Delaware, Illinois, Iowa, Kansas, Maine, Maryland, Minnesota, Missouri, New Jersey, North Carolina, North Dakota and Ohio.

Two key Maryland counties have agreed to support the controversial takeover of Pepco by Exelon in return for promises of bill credits, reliability improvements and other concessions.

News briefs from the states within the footprint of RTOs. This week we include Delaware, Illinois, Indiana, Louisiana, Michigan, Minnesota, Mississippi, Montana, New York, North Carolina, North Dakota, Ohio, Pennsylvania, Virginia and West Virginia.

News briefs from the states within the footprint of RTOs. This week we include Delaware, Illinois, Indiana, Iowa, Maryland, Massachusetts, Mississippi, Missouri, Nebraska, New York, North Carolina, North Dakota, Ohio, Pennsylvania, Vermont, West Virginia and Wisconsin, as well as the Canadian province of Manitoba.

News briefs from the states within the footprint of RTOs. This week we include Arkansas, Delaware, Illinois, Indiana, Michigan, Minnesota, Nebraska, New Jersey, North Carolina, Ohio, Oklahoma, Pennsylvania, South Dakota, West Virginia and Wisconsin.