Otter Tail Corp

Otter Tail Corporation (OTC) is a holding company which has strategically invested in a portfolio of diversified operations including an electric utility and manufacturing and plastic pipe businesses. Our corporate offices are located in Fergus Falls, Minnesota and Fargo, North Dakota. We classify our five operating companies into three reportable segments consistent with our business strategy and management structure. The following table depicts our three segments and the subsidiary entities included within each segment: ELECTRIC SEGMENT MANUFACTURING SEGMENT PLASTICS SEGMENT Otter Tail Power Company (OTP) BTD Manufacturing, Inc. (BTD) Northern Pipe Products, Inc. (Northern Pipe) T.O. Plastics, Inc. (T.O. Plastics) Vinyltech Corporation (Vinyltech) Electric includes the generation, purchase, transmission, distribution and sale of electric energy in western Minnesota, eastern North Dakota and northeastern South Dakota. Otter Tail Power (OTP), our primary business, serves approximately 134,000 customers in more than 400 communities across a predominantly rural and agricultural service territory. Manufacturing consists of businesses which provide metal fabrication services and manufacture thermoformed plastic products. These businesses have manufacturing facilities in Georgia, Illinois and Minnesota and sell products primarily in the United States. Plastics consists of businesses producing polyvinyl chloride (PVC) pipe primarily used in municipal water infrastructure at plants in North Dakota and Arizona.