Dilemma about solar project
Hello to everyone .
I`m kinda a crypto enthusiast and during those few years i have been dealing with mining/asics and so on i have made few extra money which i plan to use for solar power and of course lowering my power bill . Right now i have new home with close to 1500 sq. meters free space (with no shade) and planing to start putting up panels there . However since i dont plant to fill it up at once i cant hire a specialist to install everything from me (nor do i want to) so my idea is to install it parts by parts each month or so. So considering i have constant load which i can control (500, 600, 800, 1000,1350 watts) up to 18 Kw i plan something like this:
Panels something like 260-280wp/24v as example . 6-7 panels on each installment and lets say constant load on those panels of 1400 watts .
So my dilemma is this:
Considering a battery bank is charged with 10% of its nominal AH (example 2x 24v/125AH batteries = 25A/24v charger) do i get a MPPT 85 A for those 7 panels and 7 batteries to can have the full capacity of the panels as battery storage and after that with 230v inverter to pull from the battery bank and have the constant load (which of course this setup will be costly , but kinda secure probably since the MPPT should cut off the inverter when batteries run too low )
use the same number of panels + the same MPPT and single battery (which on 77amp should destroy it much sooner than expected) and then with the inverter to get the needed load .
Since each constant load isnt connected to the others i think it should be possible to be installed in parts and not get 100-200++ panels at start .
Anyhow i`m open for suggestions if anyone have another idea .
I`m aware of Inverters that can be connected to the panels and the main grid , but cant figure out yet do they need batteries or no . Also i`m wondering about them how they can utilize a load of 1400 for example (with no battery) if the panels at evening produce only 700 ?
I`ll keep reading thru the forum . Maybe someone had the same (or close to it) issue and have wrote some solutions .