Adams Fork Harless Data Center, Holden, West Virginia

TransGas Development Systems, a New York company, plans a gas-powered data center at the Harless Industrial Park near Holden and the Mingo-Logan county line, in Logan County, West Virginia. It is one of two identical campuses the company wants in the area; the other sits on the former Twisted Gun Golf Course in Wharncliffe, in neighboring Mingo County. The state Division of Air Quality issued air permits for both plants on October 2, 2025, after hearings in August and September where dozens of residents spoke against them, and the agency said the facilities "will meet all applicable state and federal air quality rules and regulations."

Each power plant would run 117 gas engines and could generate more than 2,400 megawatts, the West Virginia Highlands Conservancy reported. The Ohio River Valley Institute reads the permits as allowing 2,457 megawatts per campus, together using more than 29.4 million megawatt hours a year, nearly as much as the 33 million megawatt hours the entire state of West Virginia consumes. The plants would be off grid, built to power the two campuses alone and supplying no one else in West Virginia; TransGas has said it wants to eventually expand its data center capacity to 9.8 gigawatts.

Ten Mingo County residents sued in federal court in early December 2025, arguing the project needed federal environmental review, because of its effects on streams, mine-drainage channels and habitat used by federally protected species, before construction could continue. On December 23, 2025 U.S. District Judge Robert C. Chambers turned down their request for a temporary halt, ruling they had not yet notified the defendants and had not shown they were likely to win on the merits; their request for a permanent injunction was not addressed, so the state's air permits stand while the case continues.