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Holzzauber5 Aug 2010 07:06Hello everyone,
Some time ago, we were interested in installing a photovoltaic system. However, since the subsidies were set to change as of July 1, 2010, and our supplier was unfortunately unable to deliver beforehand, we decided to cancel the project.
Does anyone have information about the new subsidies and whether such a system is worthwhile now?
Some time ago, we were interested in installing a photovoltaic system. However, since the subsidies were set to change as of July 1, 2010, and our supplier was unfortunately unable to deliver beforehand, we decided to cancel the project.
Does anyone have information about the new subsidies and whether such a system is worthwhile now?
Hello,
A reliable statement can only be made with a cost-effectiveness analysis. This involves effort and costs money, especially if done through independent consulting rather than the seller. 😉
Mostly, the focus is on the purely electrical generation aspect (subsidies, feed-in, self-consumption). One aspect that has not yet been considered is the shading of opaque roof surfaces, which can reduce indoor temperatures and cooling loads during the summer heat period. Since the energy saving regulations primarily focus on heating energy and the summer heat protection is largely neglected, there is a tendency for increased indoor temperatures and cooling loads during the summer heat period.
With elevated (ventilated) – but not integrated – photovoltaic surfaces, indoor temperatures and cooling loads are reduced along with the energy consumption for any necessary cooling, regardless of the type. Those who tolerate or accept indoor temperatures above 24°C (75°F) in summer can disregard this aspect.
Best regards
BauKarl schrieb:
I am really interested in this as well. You get different answers from everywhere.
A reliable statement can only be made with a cost-effectiveness analysis. This involves effort and costs money, especially if done through independent consulting rather than the seller. 😉
Mostly, the focus is on the purely electrical generation aspect (subsidies, feed-in, self-consumption). One aspect that has not yet been considered is the shading of opaque roof surfaces, which can reduce indoor temperatures and cooling loads during the summer heat period. Since the energy saving regulations primarily focus on heating energy and the summer heat protection is largely neglected, there is a tendency for increased indoor temperatures and cooling loads during the summer heat period.
With elevated (ventilated) – but not integrated – photovoltaic surfaces, indoor temperatures and cooling loads are reduced along with the energy consumption for any necessary cooling, regardless of the type. Those who tolerate or accept indoor temperatures above 24°C (75°F) in summer can disregard this aspect.
Best regards
You might want to ask ZWS here. They seem to have been around for quite some time. Otherwise, I haven’t really found any independent information on this topic either. I’m interested myself since we have a renovation planned for next year. You just want to be well informed.