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Recently installed hybrid system with LiFePO4 battery bank

Greetings forum members,

I installed a new hybrid solar power system about four and a half months ago that I had been designing for some time. The system components consists of an Outback Radian GS4048A, a Midnite Classic 150 CC, a Midnite Epanel, 3600 watts of PV, and a 195 AH LiFePO4 HiPower battery bank. The panels are 72 cell 300 watts and are configured 6 strings of 2 in series. PV voltage in averages 64 volts, max is 75 and min 56. Max charging amperage I have seen is about 64 amps. I have morning and evening shading, which is why I over paneled a bit. In the design I was shooting for about 10 kWh per day average. So far over 136 days the average is 9.3 kWh.

This system is of course grid tied and mainly intended as a whole house backup system, however I do use it to offset grid power consumption. We have a 1000 sq ft home and our energy consumption is 20 to 24 kWh in the summer and 8 to 12 kWh in the winter. (You can probably guess that I live in North Florida.) The difference between winter and summer numbers is just air conditioning, so producing the average winter consumption will do if grid power is lost.

So, when I say whole house it doesn't mean everything. It doesn't include the range/stovetop/oven, or the electric clothes dryer. Everything else is included. The lights (LEDs), fans, entertainment system, microwave, refrigerator, freezer, heat pump water heater, and a 2 stage 24000 BTU heat pump for A/C and heating. I can already hear you saying, "a 24000 BTU heat pump on a 4000 watt inverter?" :eek: Well there is a reason for it.
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Well, I've got to go for now, but I'll be back later to say more on the inverter and the battery bank.

Rick



This post first appeared on Green Power Talk, please read the originial post: here

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Recently installed hybrid system with LiFePO4 battery bank

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