The Olympia Light & Power Company, organized in 1890, brought the first electricity to Olympia and Tumwater, Washington. The waterwheel-generated hydro-electric power plant also powered the streetcars between Olympia and Tumwater. In 1923 it became Puget Sound Power & Light Co.
Sources: Olympia, Washington government website: http://olympiawa.gov/documents/Admin/CFP/Final%20CFP/Drinking%20Water%20A.pdf http://olympiawa.gov/documents/Admin/CFP/Final%20CFP/Front%20Matter.pdf
From the guide to the Olympia Light and Power Co. records, 1891-1912, (Special Collections and University Archives, University of Oregon Libraries)