ComEd is teaming with an engineering company to boost the reliability of Chicago’s electrical grid and protect it against terrorism by installing three miles of superconductor cable beneath the city’s Loop district.

News briefs from the states within the PJM footprint. This week we include Delaware, D.C., Illinois, Indiana, Maryland, Michigan, New Jersey, Ohio, Pennsylvania and West Virginia.

News briefs from the states within the PJM footprint. This week we include Delaware, Illinois, Indiana, Michigan, New Jersey, Ohio, Pennsylvania and West Virginia.

News briefs from the states within the PJM footprint. This week we include Delaware, Illinois, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania and Virginia.

News briefs from the states within the PJM footprint. This week we include Delaware, District of Columbia, Illinois, Michigan, Ohio, Pennsylvania, Virginia and West Virginia.

News briefs from the states within the PJM footprint. This week we include Delaware, Illinois, Indiana, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia.

EPA's proposal to cut carbon dioxide emissions 30% from 2005 levels won’t fall evenly on all states.

News briefs from the states within the PJM footprint. This week we include Illinois, Indiana, Maryland, North Carolina, and Pennsylvania.

Exelon’s proposed $6.8 billion acquisition of Pepco Holdings Inc. should clear federal regulatory hurdles easily but may face a tougher time convincing state regulators.

News briefs from the states within the PJM footprint. This week we include Illinois, Indiana, Maryland, New Jersey, Pennsylvania, and West Virginia.