Sanity check sizing and components for off-grid solar system - Australia (QLD)
Hi Folks,
Wanted to get some advice and assistance in sanity checking my draft setup. I am looking to construct a fully off-grid solar/battery system.
I currently use around 14kWh on average per day and am likely to increase this to 20kWh with the addition of another split system heater/ac in the office.
Absolute worse case peak load I could foresee (and it would be extemely unlikely) would be:
1-2 x 1kW water pumps
2 x 2.4kW split system
1 x 1.5kW washing machine
2 x 30W monitors
2 x laptops (200W peak power consumption)
lights (50W)
1 x microwave (1kW)
1 x vaccum (1kW)
1 x power tool (1kW)
= ~12kW peak load
Again, all these things on at once and pulling peak power would likely never occur but want to be safe rather than sorry. The system I have in mind is below:
2 x 16kWh LiFePO4 batteries (48V (51.2V) 314Ah/48V(51.2V)300Ah) - humsienk
1 x 10.2 kW all-in-one PowMr solar inverter (PowMr 10200W 48V Hybrid Solar Inverter Charger MPPT 160A Sine Wave Controller)
10kW panels (can source at a range of wattages)
The solar inverter has a max VDC 500 and 18A load.
If I get between 4-5 peak sun-hours a day, and assuming even power usage across the day, do you believe this system could suppor the demand and charge batteries for usage throughout the night. It all seems reasonably sensible to me but I have been going over so many details for a while and have a bit of face blindness to it all. Am I being incredibly stupid and missing something obvious?