Seattle Municipal Light and Power Plant, also known as Cedar Falls Historic District, is a public hydroelectric plant near North Bend, Washington operated by Seattle City Light. The plant was the first publicly-owned electrical generating plant for Seattle and one of the earliest in the country for a municipality of its size. It was listed on the National Register of Historic Places in 1997.

Seattle City Light is the public utility providing electricity to Seattle, Washington, in the United States, and parts of its metropolitan area, including all of Shoreline, nearly all of Lake Forest Park, and parts of unincorporated King County, Burien, Normandy Park, SeaTac, Renton, and Tukwila. Seattle City Light is the 10th largest public utility in the United States and the first municipal utility in the US to own and operate a hydroelectric facility. In 2005, it became the first electric utility in the United States to fully offset all its carbon emissions and has remained carbon neutral every year since.