| 摘要 |
PROBLEM TO BE SOLVED: To provide an energy reduction amount display system capable of displaying intelligibly an energy reduction amount.SOLUTION: An energy reduction amount display system 1 comprises a solar water heater 10, a photovoltaic power generator 20 and a home indicator panel 40. The home indicator panel 40 calculates an amount of electric power reduced by the photovoltaic power generator 20 while calculating heat quantity reduced by the solar water heater 10. Also, the home indicator panel 40 converts the amount of electric power reduced by the photovoltaic power generator 20 into heat quantity, and displays the sum of heat quantity by adding the heat quantity reduced by the solar water heater 10 and the converted heat quantity. |
