Photovoltaic system: Advantages and disadvantages, experiences, worthwhile?

  • Erstellt am 2014-07-09 11:42:06

Lumpi_LE

2019-09-02 11:44:28
  • #1
You can definitely save 30-40€ per year with 2 meters.
 

fragg

2019-09-02 11:56:21
  • #2
I also didn’t want two meters because of the possibility of disconnection in the heat pump tariff. I don’t want anyone to be able to turn off my heating.
 

seth0487

2019-09-02 15:48:08
  • #3
Currently, it looks like this for us: (8 kWp)



No automatic linking of electricity production and switching of consumers.

We try to do laundry or run the dishwasher during the day.
 

boxandroof

2019-09-02 16:40:52
  • #4
We have completed the first full month. 10kWP, of which 75% south and 25% east/west. One module is not working yet.

1206kWH generated
188kWh/16% self-consumed
1018kWh sold
67kWh purchased (74% self-sufficiency)

Heat pump for hot water/some cooling (31kWH) and household appliances mostly scheduled to run during the day.
 

M4rvin

2019-09-02 23:10:01
  • #5
KfW is at 1.03%...

€79 sounds pretty good, but that doesn’t cover the monthly electricity demand, right?
 

boxandroof

2019-09-02 23:39:04
  • #6
The feed-in tariff guaranteed for over 20 years finances the system without self-consumption.

My first month (see #123) looked like this: approx. €110 feed-in tariff, approx. €50 savings on electricity purchase. Winter will be worse.

The interest costs for 10kWp are around €5 per month on average over your 15-year term.
 

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