Hello everyone,
Another year has passed, which means it’s time to review how much electricity the photovoltaic system produced this year, how much of that was used for self-consumption, and how much was fed back into the grid.
System size: 3.12 kWp
Commissioning date: November 2016
Location: Lower Austria
Heating system: Air-to-water heat pump
No pool or other significant loads that could benefit much from the photovoltaic system
Produced amount: 3650 kWh
Self-consumption: 1000 kWh
Fed into the grid: 2650 kWh
Self-consumption rate: 27.4% (previous year 28.1%)
I am quite satisfied with the self-consumption rate.
I’m looking forward to your data and possibly some tips on how to improve it even further.
Best regards
Another year has passed, which means it’s time to review how much electricity the photovoltaic system produced this year, how much of that was used for self-consumption, and how much was fed back into the grid.
System size: 3.12 kWp
Commissioning date: November 2016
Location: Lower Austria
Heating system: Air-to-water heat pump
No pool or other significant loads that could benefit much from the photovoltaic system
Produced amount: 3650 kWh
Self-consumption: 1000 kWh
Fed into the grid: 2650 kWh
Self-consumption rate: 27.4% (previous year 28.1%)
I am quite satisfied with the self-consumption rate.
I’m looking forward to your data and possibly some tips on how to improve it even further.
Best regards
haydee schrieb:
90% self-sufficiency In my opinion, this whole group of terms around "self-sufficiency" for photovoltaic systems is one of the biggest marketing deceptions you can encounter in house construction.
As soon as there is a grid connection, and only 1 kWh passes through the meter either from or into the grid, you are exactly one thing: no longer self-sufficient.
MayrCh schrieb:
In my opinion, this whole concept of "self-sufficiency" regarding photovoltaic systems is one of the biggest marketing illusions you can find in house construction. That’s true. In my system with a battery, the report correctly refers to it as "self-consumption rate in %" or the consumption of generated electricity in kWh.
But Porsche also calls the new 911 Cabriolet a "Timeless Machine." That’s probably not entirely accurate, but so what? If someone wants such a car, they buy it anyway :-) Just like with photovoltaic systems. Nobody really needs them, and they don’t make you fully self-sufficient, yet some people just want them. There are more pointless ways to burn money than with photovoltaics or even photovoltaics with a battery...
System size: 8.04 kWp
Commissioning date: August 20, 2018
Location: S-H
Heating system: Air-to-water heat pump
Produced energy: 1420 kWh
Self-consumption: 482 kWh → 18%
Fed into the grid: 938 kWh
The self-consumption rate could be better. However, we had really poor winter months in terms of sunshine here in the north. Additionally, my unfavorable roof angle of 28° (28 degrees) is suboptimal in winter with the low sun position.
In November, I had 99 kWh and December only 36 kWh, but with a self-consumption rate of 92.3% in December.
Commissioning date: August 20, 2018
Location: S-H
Heating system: Air-to-water heat pump
Produced energy: 1420 kWh
Self-consumption: 482 kWh → 18%
Fed into the grid: 938 kWh
The self-consumption rate could be better. However, we had really poor winter months in terms of sunshine here in the north. Additionally, my unfavorable roof angle of 28° (28 degrees) is suboptimal in winter with the low sun position.
In November, I had 99 kWh and December only 36 kWh, but with a self-consumption rate of 92.3% in December.
System with 6.24 kWp in 37339, installed facing east and west unevenly, since the east side also receives a lot of southern sunlight.
Produced in 2018: 6.16 MWh
Sold: 5.1 MWh
17.2% self-consumption rate
It could be better, but unfortunately not everyone in the house consistently uses appliances while the sun is shining.
Produced in 2018: 6.16 MWh
Sold: 5.1 MWh
17.2% self-consumption rate
It could be better, but unfortunately not everyone in the house consistently uses appliances while the sun is shining.
miho schrieb:
Installation with 9.9 kWp in 91xxx from 2017
Produced in 2018: 10,780 kWh
Self-sufficiency rate 44%
All without storage. Major consumers like dishwasher and washing machine run on timers during expected sunlight hours.What kind of timer do you use for that?
A Wi-Fi socket with an app?
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