There is a miniature hydroelectric facility on the way to the museum from the the parking lot. You can watch water flowing through the turbine. The amount of electricity generated by the facility is shown on the digital display board.
On display are two full-sized turbine runners used for the water power generation at dams. You can touch and imagine how powerful the water flow is.
Kawaguchi Power Plant: Kaplan turbine runner
Weight: 6t / unit
Amount of water used: up to 70㎥ / s
Hinotani Power Plant: Francis turbine runner
Weight: 4.4t / unit
Amount of water used: up to 60㎥ / s
Located across the road from the museum is a rooftop solar panel on the repair facility. Depending on weather conditions, you can check how much electricity is being generated.

In front of the museum is a savonius wind turbine and a propeller windmill. Both are hybrids with solar panels and revolve smoothly.
Turn the hand generator crank to hear the audio guidance of the museum and Kawaguchi Dam.