ᐅ Do photovoltaic systems and heat pumps share similar performance characteristics or operational experiences?

The mounting system is estimated to cost around 200 euros/kWp, and the actual local suppliers were an additional 200-250 euros/kWp more expensive!

However, I did not go with the cheapest supplier.

The panels come from Taiwan and are not part of the low-cost Chinese production; the rest of the equipment is from Austria.

Yes, the funding comes from the KFW 153 repayment subsidy program.

I am still analyzing and adjusting the system because the inverter shuts down without sunlight and does not record self-consumption at night.

So, I need a few more days to figure that out.

But except for the heat pump during the morning and evening hours, we achieve almost 100% self-sufficiency during the day.

toxicmolotow schrieb:

Yes, the repayment subsidy fund KfW 153.

However, KfW 153 is not directly related to "Energy-Efficient Construction – For building or first purchase of a new KfW Efficiency House."

We are currently also looking into what concepts and options are available here. Among other things, it seems possible to receive subsidies through BAFA for "Heating with Renewable Energies."

Hello,

Loan program 274 is the keyword, plus recently again 25% of the battery costs until the end of June 2016, if such a battery is installed. After that, the funding share will be reduced to 10% until the end of 2018.

Best regards, Bauexperte

An interesting topic. I have looked into it occasionally. If something like this with a storage battery is cost-effective in northern Germany, I would do it immediately.
How can I find reliable providers nearby to get some advice?

Thank you, construction expert.

So, a subsidy is only available if you build with a buffer tank. Without a buffer tank, you have to compare the terms; I believe for a fixed 10-year period, the rate is around 1.25%, so not really attractive.
Somewhere I had read a restriction of a maximum of 2 residential units, but I can’t seem to find that passage anymore—maybe it was from a different program.

toxicmolotow schrieb:
Hello dear forum members,

Since Monday noon, I have had my photovoltaic system up and running, and how shall I say... I can’t stop smiling.

Here are the details:

• 5.4 kWp (18 modules at 300 W each)
• Peak regulation set to 70% soft
• Flat roof, mounting angle 10°
• Orientation southwest, meaning 45° off south
• Feeding into household electricity including heat pump
• Surplus energy sale
• no storage system

Our output today:
21.29 kWh

Hello Toxi,

Now I’m going to tease you a little bit or put a slight damper on your joy .
We have a system with 5.36 kWp, almost perfect south orientation (gable roof), and yesterday we had a (for early March really great) production of

29.12 kWh.

Sorry – I couldn’t resist, because I myself was amazed when I saw it yesterday.
It’s probably due to the low tilt angle of your mounting system.

I don’t think your display is bad at all. My inverter is much simpler. It only shows production.
Do you also get the value (kWh number and % of production) for self-consumption displayed? I always have to calculate that myself in an Excel table.

Is your dishwasher programmable?
I load it and start it in the morning (around 6:30 am) and then set a delayed start of 3 hours (in summer) or 6 hours. I’m trying to get my wife to do the same with the washing machine – with limited success. She does the laundry and drying whenever she feels like it.
But with small things like that, you can still shift consumption a bit.
Do you have the option to program the heat pump so that it starts heating/hot water preparation, for example, at 10:00 am and 2:00 pm and then reduces operation in the evening? I have no idea if that’s possible.