 VALLEY FORGE, Pa.--BUSINESS WIRE-- MountaineerGas--UGI Corporation NYSE: UGI has completed the previously announced acquisition of Mountaintop Energy Holdings LLC, owner of Mountaineer Gas Company Mountaineer, the largest gas local distribution company in West Virginia, for an enterprise value of 540 million. With all closing conditions now satisfied, including final regulatory approval from the West Virginia Public Service Commission, Mountaineer becomes the newest wholly-owned subsidiary of UGI. UGI 