Does ESS work better in the Northern Hemishpere compared to the Southern Hemisphere? Any comments will be appreciated.
Also, how does your solar output compare if you had 2.76kW?
In the table, I have compiled the an estimated weather-adjusted monthly comparison table with seasonal alignment and estimated daily energy output (kWh/day) at mirrored latitudes — Southern Hemisphere (-25.89°, facing north) and Northern Hemisphere (+25.89°, facing south) both with a 30° tilt.
I believe the kWh/day estimated is quite accurate as my average solar for the last 7 days has been 11.97kWh against an estimate of 11.8 for June.
ESS doesn’t care where you are, just that you have sufficient solar and battery for it to meet requirements.
The worse the weather the less effective it will be, hence why batterylife exists, so there is a mechanism to cope with inclement weather and seasonal changes.
Central SA has the highest irradiation levels, and coastal towns the worst, so over-panelling is more common there as are wind installations.
Always comes down to the installation. If you design and build it correctly for your requirements and location, it just works.
As a professional solar engineer, your question seems to be a little strange.
It is not relevant to an Energy Storage system whether it is North or South of the equator, but the design of the Solar Energy (PV) system has a great influence on performance, and seasonal variations in the available solar resource vary greatly with latitude.
It would also help your comparison if you normalise annual, monthly and daily solar output to the array size: ie kWh/kWp (Total energy/Array power).
There are also some good solar resource maps for the world available on line, which give the expected annual solar resource for any location, based on a 10 year average.
FYI: at 19 degrees south of the equator, we get about 1350 kWh/kWp /annum, with approximately a 2:1 seasonal difference- i.e.peak season (December) we can get 6.3kWh/kWp/day, c/f 3.2kWh/kWp in June.
