Notes

Solar water heating system
  • Data is collected from the “Solar System Data Book” researched by JSSDA (Japan Solar System Development Association) and ISEP
Wood biomass boiler
  • Data is collected from the wood biomass energy usage investigation by Ministry of Agriculture, Forestry and Fisheries.
Geothermal heat pump
  • Data is collected from thermal energy usage survey of 2016 by Ministry of Environment.