Power lines hang from towers in Winfield, West Virginia.Photographer: Luke Sharrett/BloombergGreenClimate changedEvery U.S. Grid Is Getting a Lot Greener, Except the One That MattersCheap natural gas has flooded the grid between Chicago and Washington.ByBrian Eckhouse and Naureen S Malik+FollowSeptember 18, 2019, 10:00 AM UTCUpdated onSeptember 18, 2019, 9:22 PM UTCFromEvery major U.S. electricity grid is getting significantly greener.Except for the massive one serving 65 million Americans.