PRESQUE ISLE: The Aroostook Medical Center (TAMC) is among the nation’s alternative energy pioneers. A.R. Gould Memorial Hospital, TAMC’s largest facility, is the first in the state and the second in the country to convert its heating and cooling system from heating oil to compressed natural gas. The switch from oil to compressed natural gas was a “green” decision, in more ways than one. Not only does it burn cleaner than oil, it’s also a more cost-effective.