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Craig Andrew: So this system here was installed on the northeast roof and northwest roof. We’ve installed five and a half kilowatts of solar. This family is not home much during the day, so majority of their usage is at night. They decided they want to go the next step and putting battery storage. Now, the battery storage works very similar to the off-grid system where power comes from the panels, into the oscillators, into the inverter, into the switchboard. Then this unit here does the same sort of thing where power first goes into the house, then secondly charges the batteries but in an on-grid situation, if there’s any excess, that goes back into the grid.
Now, this unit here is enough to run — we did the similar sort of calculations but we don’t do the load assessments as with an off-grid, what we do is look at their bill, do an estimate on daytime, nighttime usage. So then, the battery system is sized on what your night time usage is going to be. So this system here is enough to run their house at night when everybody is home, doing the cooking, watching TV, listening to music, lights on, etcetera.
The bill leading into summer before this system was installed was $900. This system was installed over the summer period, their bill in the first quarter of the year was reduced to $52.
Topics: solar energy, solar panel, solar panel install, solar panel installation australia, solar panels, off-grid, on-grid, solar solutions, wind power, solar power systems, renewable energy, green energy