21 December 2007

Hoshinoya Karuizawa, Japanese Style Onsen Hotel – The Largest Geothermal Heat Pump System in Japan


The “Hoshinoya Karuizawa” project was launched in the 1990s, and we originally considered the use of natural energy. We have been operating an in-house hydropower plant since 1904, but we planned to establish a facility that does not depend on fossil fuel by adopting a geothermal heat pump heating system. As a result, about 75% of the power used for the facility is self-supplied.