Morgantown AES Federal Credit Union has been open since 1955. It's the 18th largest credit union in West Virginia with assets totaling $47.05 Million and providing banking services to more than 5,000 members. Membership: The credit union is a member-owned financial cooperative providing financial banking services to multiple member groups, but primarily serves federal, state, and local government employees. Membership is also open to immediate family of current members.