ᐅ Solar Power System: Your Yield in the Year 2018

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

We are a German forum here and have different quotas / subsidies.

I cannot make any other statements because I do not have photovoltaic systems.

My photovoltaic system has only been running since March 2018, but the months before that probably don’t make much difference anyway:

Capacity: 9.15 kWp
Produced: 9,380 kWh
Self-consumption: 1,184 kWh
Location: near Augsburg

Because of the "large" system, my energy consumption ratio is naturally lower (~13%), but what’s more interesting is the degree of self-sufficiency, which according to the inverter is supposedly 69%.
That seems a bit high to me, but we do try to only run appliances that use a lot of electricity when the sun is shining (washing machine, dryer, dishwasher, hot water production in the air-to-water heat pump, vacuum cleaner…).
I’m satisfied.

System size: 6.2 kWp
System commissioning: June 2018
Location: TH
Heating system: air-to-water heat pump

Energy produced: 3420 kWh
Self-consumption: 42.6 %
Fed into the grid: 2140 kWh
Energy autonomy: 49.26 %

debaser schrieb:
My photovoltaic system has only been running since March 2018, but the months before probably don’t contribute much anyway:

Capacity: 9.15 kWp
Produced: 9380 kWh
Self-consumption: 1184 kWh
Location: near Augsburg

Because of the “large” system, my energy consumption ratio is naturally lower (~13%), but what’s more interesting is the level of energy independence, which according to the inverter is supposedly 69%.
That seems a bit too high to me, but we do try to run all high-energy appliances only when the sun is shining (washing machine, dryer, dishwasher, hot water generation in the air-to-water heat pump, vacuum cleaner…).
I’m satisfied.

I just can’t stop smiling about your energy independence rate :-p.

You’re right that the three months don’t really boost the production much.

On the other hand, December, January, and February are exactly the months that drag your average annual independence rate down to about 30%.

I would really like to see the numbers from my parents’ neighbors. They want to achieve 90% self-sufficiency – that’s what the seller calculated for them – including storage, but storage capacity isn’t unlimited, especially with the current weather.

It would be great if others could share their figures as well. It’s quite interesting to see what reality actually delivers.