Photovoltaic system: Advantages and disadvantages, experiences, worthwhile?

  • Erstellt am 2014-07-09 11:42:06

miho

2018-07-18 10:31:16
  • #1

Our system pays off and even shades the roof of the bedroom and children's room. Everyone sleeps wonderfully. When we sleep, the system also produces nothing, as it is dark. No current flows and there is no magnetic field. And if there were one, there would be no reason to be afraid of it.
 

Nemo2008

2018-08-01 13:28:43
  • #2
The energy values of our photovoltaic system can be found in our construction blog. simply: autark mit Passivhaus google
 

munger71

2018-08-01 20:40:17
  • #3
The aluminum hat of Chuck from Better Call Saul
 

miho

2018-08-08 15:12:19
  • #4


The specialist often also sells solar systems and storage. He has his own interests in this. One must be aware of that.
 

seth0487

2018-08-09 09:55:25
  • #5
We had our photovoltaic system with 8kWp installed last week. Now we are just waiting for the meter installation by the grid operator, then we can start producing electricity!

Photovoltaics almost always pay off! Even if you only feed in and have 20% self-consumption. The system pays for itself after 10-14 years. After that, it generates money. Modules have a 25-year performance warranty (87% of nominal output after 25 years) and the inverter has a 12-year warranty.

Since we heat with an air-water heat pump, I work from home a lot, and have a large aquarium, I expect at least 30%-40% self-consumption. The system is set up so that through an interface the air-water heat pump can be controlled when there is photovoltaic surplus and the hot water tank or the underfloor heating can be "overheated". That means when there is too much photovoltaic power, the hot water is heated to 50°C instead of 45°C. This way the air-water heat pump can pause longer in heating the hot water when no photovoltaic power is available. It is virtually an energy storage. The same applies to the floor heating. It can be heated a bit more within the personal comfort zone to store the photovoltaic electricity as heat.
 

Tubifex

2018-10-06 17:32:31
  • #6
Ikea is entering the photovoltaic market with interesting prices. There will be a lot of movement in the future!
 

Similar topics
08.12.2014Small photovoltaic system 2 KWp11
20.10.2016Water-bearing fireplace stove floor heating, heat pump, photovoltaic, new construction?28
23.02.2015Air-water heat pump with solar thermal and fireplace? Cost/benefit/meaning34
09.06.2015Gas, heat pump, and solar for a single-family house?36
05.06.2015Photovoltaic system for hot water preparation and feed-in15
26.08.2015Cost Breakdown Heat Pump - Heat Pump with Ground Collectors23
02.10.2015Comparison of heating electricity costs for air-to-water heat pumps from different providers24
19.05.2021Experiences with brine heat pump491
06.12.2015Heat pump / final energy demand / annual performance factor20
18.09.2016Operate heat pump autonomously with photovoltaic system.88
27.03.2016Air-water heat pump, gas, solar thermal prefab house, advantages and disadvantages?18
01.05.2016Heat pump, electricity prices, gas prices - where is the journey heading?20
21.06.2016Heat pump with photovoltaics vs gas and solar thermal52
18.10.2016Which heat pump? Ventilation system / Air-to-water heat pump93
10.10.2017New photovoltaic system with storage in single-family home - experiences39
03.01.2017Preparation for photovoltaic or solar thermal with air-water heat pump18
19.06.2018Photovoltaic system in new construction: Would you install one? Any experiences?31
28.03.2021Strom-Cloud experiences vs. feed-in tariff?94
11.06.2021How much does a good new heat pump cost? Looking for experiences!58
24.02.2022Photovoltaic system air-water heat pump - profitability single-family house KFW55EE95

Oben