A major Japanese railway company has announced that it is now using renewable energy to power its trains. Tokyu Railways trains running through Tokyo's Shibuya Station and other stations switched to electricity generated solely by solar and other renewable sources on April 1, 2022.
This means that carbon dioxide emissions from Tokyo's network, which includes seven train lines and a tram service, are now zero. Green energy is used in all stations, including for vending machines, security camera screens and lighting.
Tokyu, which employs 3 people and connects Tokyo with neighboring Yokohama, is the first rail operator in Japan to achieve the goal. It says the carbon dioxide reduction is equivalent to the average annual emissions of 855 Japanese households.
Ryo Takagi, a professor at Kogakuin University and an expert on electric railway systems, said Tokyu's efforts show that the company is taking up the challenge of promoting clean energy.
But he added that it would be more beneficial to switch from diesel trains in rural areas to hydrogen-powered lines, and to also use electric cars.
Japan, the world's sixth-largest carbon emitter, aims to ensure that 38% of its energy comes from renewable sources by 2030. It has also set a goal of becoming carbon neutral by 2050.
Only about 20% of the country's electricity comes from renewable sources, according to the Institute for Sustainable Energy Policy. That's far behind New Zealand, for example, where 84% of electricity comes from renewable sources.
New Zealand hopes to reach 100% by 2035. The renewable sources that power Tokyo's trains include hydroelectricity, geothermal, wind and solar, according to the Tokyo Electric Power Company. Tokyo has more than 100 kilometres of railways serving 2,2 million people a day.
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