This picture taken on January 14, 2026 shows the Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows staff members working at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows staff members working at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows staff members monitoring the water at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows a general view of Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows a staff member monitoring the water at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows staff members monitoring the water at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama

This picture taken on January 14, 2026 shows a staff member changing a part of the osmosis membrane facilities at Sea Water Desalination Plant in Fukuoka. A Japanese water plant is harnessing the natural process of osmosis to generate renewable energy that could one day become a common power source. (Photo by Philip FONG / AFP via Getty Images) / TO GO WITH AFP STORY: Japan-climate-energy-technology-environment, FOCUS by Hiroshi Hiyama