Hi all,
we are planning on a new PV-installation on our south-east roof, estimating 6...10 kWp of solar power. We also plan a diy battery (LFP 16 cells, 280 Ah, 48V) and look for a decent hybrid inverter with very low stand-by consumption (night use). We live in Germany in an own house, so we have 3 phases on 400 V (between phases in Germany). With a 1-phase inverter you can roughly output max. 5 kW, of course a 3phase inverter would be more suitable. But i read that most 3phase inverters have quite a high stand-by consumption of 100 - 150 W. This is way too much imho, esp. for night-use where you only need little electricity for the fridge or the water pump or the oil heater (100...200 W, avg. 50...80 W). The 1phase inverters run on much less stand-by consumption (from 20...50 W).
I don't want to use the battery for up to 1.5 or even 2 kWh just for stand-by and little bit of house electricity needed. The inverter could switch off completely during night or go into 'deep sleep' when battery gets below say 50% SoC.
What inverter would you recommend? Should i opt for 1phase or 3phase? What is the best option in term of efficiency and low stand-by consumption?
Thank you!
we are planning on a new PV-installation on our south-east roof, estimating 6...10 kWp of solar power. We also plan a diy battery (LFP 16 cells, 280 Ah, 48V) and look for a decent hybrid inverter with very low stand-by consumption (night use). We live in Germany in an own house, so we have 3 phases on 400 V (between phases in Germany). With a 1-phase inverter you can roughly output max. 5 kW, of course a 3phase inverter would be more suitable. But i read that most 3phase inverters have quite a high stand-by consumption of 100 - 150 W. This is way too much imho, esp. for night-use where you only need little electricity for the fridge or the water pump or the oil heater (100...200 W, avg. 50...80 W). The 1phase inverters run on much less stand-by consumption (from 20...50 W).
I don't want to use the battery for up to 1.5 or even 2 kWh just for stand-by and little bit of house electricity needed. The inverter could switch off completely during night or go into 'deep sleep' when battery gets below say 50% SoC.
What inverter would you recommend? Should i opt for 1phase or 3phase? What is the best option in term of efficiency and low stand-by consumption?
Thank you!