Firefighters are struggling to contain a fire at Japan’s largest floating solar power plant, near Tokyo.

Black smoke began billowing from solar panels on the surface of the water at Yamakura Dam in Chiba Prefecture on Monday afternoon.

Firefighters say about 50 panels have caught fire so far. No injuries have been reported.

The plant has more than 50,000 solar panels, and covers some 18 hectares of dam water.

Firefighters say powerful winds brought by Typhoon Faxai, which made landfall in Chiba early Monday, may be to blame. They say the winds may have caused some of the panels to stack up on each other, generating intense heat that caused the fire to break out.