Duke Energy is joining a novel $8 billion project using wind and salt mines to provide power, the first time underground compressed-air storage would be used on such a scale in the U.S.

News briefs on companies in the PJM Interconnection this week, including the Tennessee Valley Authority, Exelon, Duke, PSE&G and Dominion.

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

News briefs on companies in the PJM Interconnection this week, including NRG, Dominion, PSEG, Duke, FirstEnergy, Exelon, PPL and AEP.

FERC rejected an agreement between Duke Energy Carolinas and Duke Energy Progress to share capacity, saying the deal would be discriminatory.

Duke Energy, Dominion Resources and other partners last week proposed a 550-mile, $5 billion pipeline to carry natural gas from the Marcellus and Utica shale formations to Virginia and eastern North Carolina.

News briefs on companies in the PJM Interconnection this week, including Duke Energy, Exelon, American Electric Power, Pepco and PPL.

Dynegy announced Friday it will nearly double its capacity with the purchase of about 12,400 MW of generation from Duke Energy and private equity firm Energy Capital Partners.

PJM member companies FirstEnergy, Duke Energy, NRG Energy, Dynegy and AES all announced second-quarter earnings last week.

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