ᐅ Photovoltaic System: Costs and Savings Potential – Experiences?

Created on: 16 Jan 2020 10:50
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Hans-Maulwurf
Hello everyone,

Since I have no prior experience, I would like to get some general information.
Our new building will be heated using an air-to-water heat pump.
What would generally and overall be the advantages, potential savings, and costs of installing a photovoltaic system on the roof? Is it worthwhile or not?
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Andre77
21 May 2020 21:03
Those are impressive figures. 2x 100%

Current status: PV generation 0.03 kW, total consumption 0.03 kW, grid feed-in 0.00 kW; self-sufficiency 100%.
DaSch1721 May 2020 21:46
Fuchur schrieb:

Why do you need to decide now? Just include conduit pipes and that’s it. Integrating something "conceptually" at this stage only leads to costs without added value.

We are planning very budget-conscious. That’s why we’d like to know whether to already include a buffer for photovoltaics in the budget or not... So this is a preliminary, basic consideration about whether to include photovoltaics or not.
Andre77 schrieb:

Those are impressive figures. 2x 100%

Do you have the figures for winter as well?
lin0r8722 May 2020 06:45
However, do not sign any contract with the network provider!
That is what we were advised. You will receive the renewable energy feed-in tariff regardless.
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exto1791
22 May 2020 13:19
Currently, it makes the most sense to prepare the house for photovoltaic installation and consider in the future, depending on factors like feed-in options, whether to actually install a photovoltaic system on the roof.

With an air-to-water heat pump, I can’t store all the electricity I draw, since battery storage systems are still very expensive, right?

Details: single-family house with a hip roof – KfW55 standard – 150m² (1615 sq ft) with basement
Tarnari22 May 2020 13:21
exto1791 schrieb:

At the moment, it seems most sensible to have the preparation for photovoltaic systems installed and to consider in the future—depending on developments with feed-in tariffs and such—whether to actually install a photovoltaic system on the roof, right?

With an air-to-water heat pump, I can’t really store all the electricity I generate because battery storage systems are still quite expensive, aren’t they?

Details: Single-family house with a hipped roof – KfW 55 standard – 150m² (1,615 sq ft) with a basement

You can ask the installer if they are willing to accommodate your situation by including a clause in the contract that allows you to withdraw from the agreement if funding caps come into effect before the system is installed on the roof.
That’s what we were able to do.
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Fuchur
22 May 2020 23:16
He is "planning" to start construction in 2021, but no installer will work on that today.