16.03.16: Start of photovoltaic assembly

The values from last night 00:00 until now at the moment.

Daily consumption2373 Wh

Grid supply933 Wh

Self-sufficiency1440 Wh

Battery discharge1057 Wh

Direct consumption383 Wh

Daily yield669 Wh

Self-consumption499 Wh

Battery charge116 Wh

Grid feed-in170 Wh

Autonomy rate61 %

Self-consumption rate75 %

Direct consumption rate57 %

So you would say it is sufficient? For determining self-consumption, etc.? I'm thinking about whether I need a logger for my photovoltaic system. As it looks, it will probably be Winaico modules with a Fronius inverter

What do you need a logger for?

The Fronius inverter can log sufficiently together with an additional S0 meter.

After exactly one week - mixed with sun, rain, snow, sleet, the situation looks quite interesting, although not representative. The delta in battery charge to consumption also includes the initial charging of the completely empty battery at startup. Put differently, from the withdrawal, the tiny battery covered almost 2 days of consumption. In my system, the charge/discharge losses are only 3%. That is very low. With larger batteries, there are usually 6-8%.

Today was almost nothing: Here in NRW the weather is dreadful....... very dreadful. The battery is already "cooked dry" (literally).

But: I am personally very satisfied with the data, I had expected less.....

PS: Below it says "Monats-Verbrauch". Sure - but it is only exactly one week in this month..... the S0 logger has not been running longer yet.

LG Thorsten


Monatsverbrauch67.45 kWh

Netzbezug11.56 kWh

Eigenversorgung55.89 kWh

Batterieentladung18.81 kWh

Direktverbrauch37.08 kWh

Monatsertrag183.60 kWh

Eigenverbrauch58.29 kWh

Batterieladung21.21 kWh

Netzeinspeisung125.31 kWh

Autarkiequote83 %

Eigenverbrauchsquote32 %

Direktverbrauchsquote20 %

PPS: The main permanent electricity guzzler is the fridge from the year Tuck and Tobak. 370 kWh/year (measured). Pure madness. Modern devices have 70-90. One could still accept all of this - if the appliance actually cooled properly. But it doesn’t anymore.

You have to put this into perspective: This old wannabe cooler pocket consumes over 10% of my annual electricity consumption. Truly amazing.

Decision made today: The good fridge is going into retirement. It will soon be replaced by a younger A+++ fridge.

That is not 60€. The KS must run for 10 years before the repurchase pays off

My refrigerator is almost new and uses just under 400 kW/year - it’s supposed to hold a lot anyway :D