PA’s Largest NatGas-Fired Electric Plant Officially Online Electrical Generation | Industrywide Issues | Lackawanna County | Pennsylvania January 16, 2019January 16, 2019 Lackawanna Energy Center (click for larger version) Invenergy blasted out a press release yesterday to announce that their 1,480 megawatt, $1 billion Marcellus gas-fired electric plant, called the Lackawanna Energy Center (located near Scranton, PA) is now fully, 100%, online. Please Login to view this content. (Not a member? Join Today!) Related