Yaotsu Old Power Plant Museum, Industrial heritage museum in Yaotsu, Gifu Prefecture, Japan

The Yaotsu Old Power Plant Museum occupies the former Yaotsu hydroelectric plant in Yaotsu, Kamo District, Gifu Prefecture, completed in 1911 by Nagoya Electric Light and shut down by Kansai Electric Power in 1974. The museum opened in 1978 as the Yaotsu Local Museum and took its present name in 1998, the year the buildings and generator were designated Important Cultural Properties. It has been closed since 29 December 2018 because of insufficient earthquake resistance.

The facility was built in 1911 and used river water to generate electricity for the region's growing industry. It ceased operations and was later converted into a museum to preserve this chapter of industrial history.

The structure reflects how workers operated an early industrial facility and how the community depended on water power for electricity. Visitors can observe the connections between machines and understand the role this plant played in the region's development.

The museum is located in a rural area and visiting by car is most convenient, though checking details ahead of time is helpful. The site spreads across several buildings, so allow time to explore all sections.

The museum has been closed since 29 December 2018 because the building lacks earthquake resistance, and no seismic reinforcement work is scheduled. Its 1998 national Important Cultural Property designation covers the main power house and the discharge outlet facility; gateposts, brick walls, retaining walls and a management stairway were added in 2005.