Off-Grid System about Battery Calculation Trouble

[semiht]

Hi,
I'm creating a off-grid system. I have 24500kWh consumption for year, and month of January is top with 2532kWh(per day about 84kw). I calculated and using 81 pieces 395W solar panels. And system have configuration of inverters like that:
3x5kw inverter for mpp1+2 1x15 (total 45 modules) and 2x6.5kw inverter for mpp1 1x9 and mpp2 1x9 (total 36 modules). There is no problem until to this point.

I want to work system about autonomy like 2 days. as i calculated: 2x84kw=168kw. when i take in losses. 168/0.76=221. up to nearly 225kw.

But when in pvsol, the program dont let the simulate under 390kwh total battery power. I cant solve that problem. Please help.

my panel is 24v, inverters are gw5k-et and gw6.5k-et, used batteries are li-on 24v 180ah 4.75kw (2 series 43 strings configurated by the pvsol). sunny time per day is 3.5 hours

Thanks.

[developer_mh]

Dear semiht,

first of all let me wish you a happy and healthy new year 2021.

Could you provide me the project file, please? That would make it easier to answer your question. You can send it here in the forum by private message.

Kind regards,

Martin

[Dosty]

Hi,

I have similar problem.

I have a 450kwh battery, but the program does not want to correctly calculate the battery usage.

Can u help me?

Picture1 = https://ibb.co/0MQJn9g
Picture2 = https://ibb.co/H43hY3D

[developer_mh]

Dear Dosty,

could you provide your project file please? You can send it to our hotline team at hotline@valentin-software.com.

Thanks and kind regards,

Martin