Solar panels produce electricity during the day. Some of this energy is used to supply your electrical loads which are powered up at the same time that solar power is being generated. The proportion of solar energy that can be consumed in real time varies according to each household consumption pattern.
Typically, around 30 – 35% of solar energy is consumed directly by house loads at the same time that it is generated. Excess solar energy which is not consumed at the time it is generated is then used to charge your house battery.
When the sun goes down and solar panels no longer generate enough power to supply house loads, the battery comes alive and supplements power grid to ensure that your household appliances can remain powered up with your own stored solar energy. Depending on consumption and on size of PV and battery system, it is possible to make an average Maltese household COMPLETELY self sufficient, with zero energy bills.