Otter Tail Corporation is a holding company with two principal subsidiaries, including Otter Tail Power Company and Varistar Corporation (Varistar). As of December 31, 2008, the Company operated in six segments: Electric, Plastics, Manufacturing, Health Services, Food Ingredient Processing and Other Business Operations. Otter Tail Power Company is focused on owning and operating the regulated utility business of the Company. Varistar Corporation is focused on owning and operating the non-electric businesses. The non-electric businesses are in manufacturing, health services, food ingredient processing, plastics, construction and transportation. On May 1, 2008 the Company’s wholly owned subsidiary, BTD Manufacturing, Inc. (BTD), acquired the assets of Miller Welding & Iron Works, Inc. (Miller Welding).