| 摘要 |
PROBLEM TO BE SOLVED: To provide a solar power generation system which allows efficient sale of surplus power. SOLUTION: DC power generated by a solar battery is supplied only to a common use portion (such as common use lights, or the like) of a building, after converting to AC power via an earth leakage breaker 603, a main earth leakage breaker 407, and a branch circuit breaker 409. Surplus power in the meantime is outputted for sale to a power company via a pull-in line, while measured by a surplus power watt-hour meter 601. Since the power consumed for the common use portion of the building is a little, much power can be outputted for sale. |
