The plan will use small power generators to produce power when customers go through ticket turnstiles. A prototype system has been installed in Tokyo's Shibuya Station.
Japanese rail companies are major consumers of power. They've been under pressure to cut power consumption after the Fukushima nuclear disaster drastically cut the long term power supply to the Tokyo region (Kantō).
It's hoped the system will generate supplementary power when it's needed most: during rush hour. Each day 3.64 million people pass through Shinjuku station in Tokyo alone. It's hoped the system will eventually become a significant source of power.
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