James O'Neil Avista Corporation (NYSE:AVA) is a regulated electric utility that serves customers in the Pacific Northwest states of Washington, Oregon, and Idaho. The company also has a subsidiary that operates in Alaska:   Avista Corporation Interestingly, though, we can see that the company’s service territory does not include many of the largest and most well-known cities in the area, such as Seattle and Olympia in Washington, Portland in Oregon, or Boise in Idaho. This is not necessarily a problem,  ...