Number of installed solar water heating systems Japan FY 2005-2021

In the fiscal year 2021, the number of installed solar water heating systems in Japan amounted to around 9.3 thousand units. Even though figures decreased continuously since fiscal 2005, solar water heating systems remained the most equipped type of solar heating systems in Japan.在2021财年，日本安装的太阳能热水系统数量约为9.3千套。尽管自2005财年以来数据持续下降，太阳能热水系统仍保持在日本太阳能加热系统中最广泛装备的类型。