| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system which allows for enhancement of convenience, by combining a system interconnecting storage battery system with a non-system interconnecting storage battery system.SOLUTION: A power supply system 1 includes a photovoltaic power generation unit 10, a system interconnecting storage battery system 30 capable of supplying power to loads, and a non-system interconnecting storage battery system 40 capable of supplying power to a specific load 300 in the loads mentioned above. The power supply system 1 can supply power to the loads mentioned above, while apparently charging or discharging power from the photovoltaic power generation unit 10 and a commercial power supply 200. In a case of emergency where power from the commercial power supply 200 cannot be supplied, power charged in the non-system interconnecting storage battery system 40 is supplied automatically to the specific load 300, and when the power charged in the non-system interconnecting storage battery system 40 is reduced to a predetermined level or below, power charged in the system interconnecting storage battery system 30 can be supplied to the specific load 300. |
