IDACORP, Inc. is a holding company. The Company's principal operating subsidiary is Idaho Power Company (Idaho Power). The Company's segment is utility operations. The utility operations segment's primary source of revenue is the regulated operations of Idaho Power. Idaho Power is an electric utility engaged in the generation, transmission, distribution, sale and purchase of electric energy and capacity. Idaho Power is the parent of Idaho Energy Resources Co. (IERCo), a joint venturer in Bridger Coal Company, which mines and supplies coal to the Jim Bridger generating plant owned in part by Idaho Power. Its subsidiaries also include IDACORP Financial Services, Inc., an investor in affordable housing and other real estate investments, and Ida-West Energy Company, an operator of small hydroelectric generation projects. As of December 31, 2016, Idaho Power provided electric utility service to approximately 535,000 general business customers in southern Idaho and eastern Oregon.