| 摘要 |
<p>During a time zone where power demand is smaller than an average value of the entire power demands of homes, an excess portion obtained by subtracting power demand from a base power portion supplied by a PEFC (1) is charged in a capacitor (7) and a lead storage battery (8); and during a time zone where power demand is larger than an average value, a peak power portion exceeding this average value is discharged from the capacitor (7) and the lead storage battery (8); thereby enabling the system to meet a day’s home-use demand with minimum equipment by effectively using surplus power. Accordingly, energy efficiency and cost efficiency can be enhanced without wasting energy.</p> |
