West Virginia Citizen Action Group is asking state regulators to postpone a ruling on Appalachian Power's request to acquire the remaining portion of a coal power plant.
The group said it filed a motion with the Public Service Commission on Monday asking it to order the company to look at buying other power plants instead.
Appalachian Power and Wheeling Power are asking to buy half of the Mitchell coal-fired generating plant in Moundsville.
West Virginia Citizen Action Group wants regulators suspend the case until the companies produce an economic analysis of the cost of purchasing plants for sale by Duke Energy and AES Corporation in Ohio.
The group says the move would protect ratepayers by having the company look at possible less expensive options to the Mitchell plant.