Idle 'no load' Consumption: Specs vs Your Personal Observation

[AntronX]

Growatt SPF 5000es + 4.8 kW solar + 5.1 kWh LFP.
240 Vac
~3 kWh/day energy loss.


84.9-(64.1+32.3)= -11.5 kWh /4days = -2.875 kWh/day (-86 kWh/month)

 

[Lt.Dan]

1. Renogy 1000w
2. 230V
3. 1000w continuous
4. 10w(No load) Inverter just put on. (<14w manufacture’s spec)

However I have a question please. As soon as I plugged in a 9watt bulb into the inverter, shunt jumped from 10w idle to 24w. Meaning 15w is being used by the inverter. So with load on, idle consumption jumps from 10w to 15w.
When a load of 105w is plugged in, shunt jumps from 11w to 130w(Meaning Inverter is consuming 25W), when a load of 193w is plugged in, shunt reads 231w, meaning inverter is consuming 38w. I really dont understand the phenomenon behind this loss. Is it the inverter that is consuming all that 15w, 25w, 38w or where is the power disappearing to. And if it is the inverter that is consuming the power, why is it not constant, why is it going up as my load goes up.

You are experiencing efficiency losses.

As soon as you plug in the 9w light bulb, you are no longer at idle, because you have a 9w load, so there is no such thing as "Idle Consumption" it is now "Efficiency Losses"

 

[sunshine_eggo]

1. PowMr 24/3000
2. 120V
3. 3000W
4. 38W
5. 23W power save