ᐅ Photovoltaic Systems: Advantages, Disadvantages, Experiences, and Is It Worthwhile?
Created on: 9 Jul 2014 11:42
F
Fortuna86
Hello,
I would like to know your opinions on the topic of photovoltaic systems.
The plan is for a house with 140 sqm (1507 sq ft) with a south-facing roof.
Is financing such a system worthwhile?
What are your personal experiences in this area?
Do you have to feed the electricity into the grid, or is it allowed/possible to use it yourself?
Are there any special incentives or subsidies available?
What disadvantages does installing such a system have (please don’t mention “appearance”)?
I would like to know your opinions on the topic of photovoltaic systems.
The plan is for a house with 140 sqm (1507 sq ft) with a south-facing roof.
Is financing such a system worthwhile?
What are your personal experiences in this area?
Do you have to feed the electricity into the grid, or is it allowed/possible to use it yourself?
Are there any special incentives or subsidies available?
What disadvantages does installing such a system have (please don’t mention “appearance”)?
fragg schrieb:
Heat pump, recirculation line, 2 households, small child, clothes dryer, 3 refrigerators, air conditioning, rain shower... highest self-sufficiency rate was 88%. If I turn off air conditioning, recirculation line, and ventilation, certainly >90%. But do I want that? Same here, except without 3 refrigerators.
But for me, it was more about that if you already have a storage tank, it should be designed so that (losses aside) you can at least reach nearly 100% during the summer half of the year.
What’s the reason it’s not enough for you? Are there too high peaks, or does the storage not last through the night?
I find storage tanks interesting, but when I hear things like this, it really takes the motivation away.
boxandroof schrieb:
With moderate consumption, a single meter is sufficient.2000 kWh household
3000 kWh heat pump
Annual values
Lumpi_LE schrieb:
You can easily save 30-40€ per year with two meters.I also didn't want two meters because of the possibility to disconnect in the heat pump tariff. I don't want anyone to be able to turn off my heating.
B
boxandroof2 Sep 2019 16:40We have completed the first full month. 10 kWp, with 75% facing south and 25% east/west. One module is not yet operational.
1206 kWh generated
188 kWh / 16% self-consumed
1018 kWh sold
67 kWh purchased (74% self-sufficiency)
Heat pump used for hot water / some cooling (31 kWh), and household appliances are mostly scheduled to run during the day with a timer.
1206 kWh generated
188 kWh / 16% self-consumed
1018 kWh sold
67 kWh purchased (74% self-sufficiency)
Heat pump used for hot water / some cooling (31 kWh), and household appliances are mostly scheduled to run during the day with a timer.
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