A group of baby-boomer residents from a spa resort section of the city of Fukushima is aiming to restore the area's popularity — which is suffering amid the prefecture's nuclear crisis — by introducing a geothermal power-generation system that uses water from the hot springs.

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The new system, which can utilize excess spa water, is considered to be more environmentally friendly than existing geothermal power generation systems that require large-scale plants to generate electricity from high-temperature gases deep in the ground.