For our new build, we originally planned to install an air-source heat pump and generate the electricity for it, as well as part of our other electricity needs, with our own photovoltaic system and battery storage. After receiving two quotes, we now have some doubts. The lowest quote for a heat pump with 5.08 kW, a photovoltaic system with 5.1 kWp, and a battery with 5.12 kWh is €33,000. Should we rather choose a conventional gas heating system instead? That would definitely be cheaper. Or is that completely outdated now?
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Heidi19656 May 2020 21:44superzapp schrieb:
Hi, in the photovoltaic forum, the combination of photovoltaic systems and heat pumps is often discussed. It is nearly always advised against adding a storage battery because the (energy) storage is essentially the underfloor heating or the heat pump’s own storage. Also, such a small system is almost useless when paired with a heat pump (winter/summer issue). Probably better to have the roof fully covered with photovoltaic panels, and only add a battery storage if it is very affordable due to subsidies or if you accept that storage is an expensive hobby, although it is probably good ecologically (self-sufficiency, less electricity from fossil fuels, etc.). But this is borderline from an ecological standpoint.
The specifications would also be helpful to roughly assess the offer: What is the cost of the heat pump (and exactly what is included in the offer)? How expensive is the photovoltaic system, and what does the storage cost? (Again, have the photovoltaic offer evaluated in the photovoltaic forum, where you usually get suggestions for optimized systems.)What is the exact name of the forum? I can’t find it.
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nordanney6 May 2020 21:53Bitte geben Sie den zu übersetzenden Text an.
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knalltüte6 May 2020 22:35The forum’s autocorrect slightly distorts the name... it cuts out the ...ik... part
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Heidi19656 May 2020 22:41I found it anyway.
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Pinkiponk15 Jul 2020 18:19MayrCh schrieb:
That is the core of the problem. I don’t see it so pessimistically. In my opinion, most people try to act environmentally conscious in as many areas as possible or reasonable, but no one can be 100% environmentally responsible in every aspect. I think it’s acceptable, for example, if someone chooses a gas condensing boiler but avoids air travel and cycles as often as possible. Another person might install a heat pump but allow themselves to drive an SUV, drive faster on the highway, or buy a new phone every year. I believe none of us can or must act fully environmentally correct in every respect but should focus on the areas where it is possible for them, accepting some compromises along the way. What matters is the awareness of environmental protection and aligning actions with one’s own capabilities, including mental and physical aspects.
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ttiggerin27 Jul 2020 23:21Heidi1965 schrieb:
I found it anyway.Have you made a decision by now?
We are still facing the same question.