Illinois, Michigan, Ohio and Pennsylvania will account for nearly one-half of the estimated 27.3 GW of new natural gas-fired generation capacity in the United States by the mid-2020s, according to the Energy Information Administration (EIA).

In its latest Monthly Electric Generator Inventory report. EIA said there was a common thread among the four states: each has natural gas pipeline access from the Marcellus and Utica shales. 

Together the four are set to gain 43% of gas-fired generation capacity slated to go online from 2022 to 2025. Illinois is projected to add the most capacity at 3.8 GW, said EIA. The statistical arm of the U.S. Department of Energy (DOE) also predicted that Michigan would add 3.2 GW during the period, followed by Ohio at 2.9 GW and Pennsylvania at 1.9...