Hello everyone,
what is your assessment of photovoltaic and/or solar systems purely from an economic perspective?
Without going into details.
Single-family house, 199 sqm (2,145 sq ft); 2 adults / 2 children; gas condensing boiler with underfloor heating;
I know it always depends on the individual case, but I would like to hear your opinions based on the points mentioned above and from those who have experience with the additional costs of such systems.
Thanks in advance.
Best regards
what is your assessment of photovoltaic and/or solar systems purely from an economic perspective?
Without going into details.
Single-family house, 199 sqm (2,145 sq ft); 2 adults / 2 children; gas condensing boiler with underfloor heating;
I know it always depends on the individual case, but I would like to hear your opinions based on the points mentioned above and from those who have experience with the additional costs of such systems.
Thanks in advance.
Best regards
B
Bauexperte14 Oct 2015 18:39Mycraft schrieb:
Well, the warranty is unfortunately of little to no use because most manufacturers have filed for bankruptcy after 5-6 years... So you get no more and no less than the legally mandated 2 years of statutory warranty... Then you should handle it like f-pNo; large companies mostly have successors. Apart from that, I wouldn’t place the – perhaps deserved – trust in a small operator when it comes to new technology either.
Regards, Bauexperte
N
nordanney14 Oct 2015 20:31Mycraft schrieb:
I have... but the investment is hardly worthwhile... though it’s good for peace of mind... You seem to have a very negative view of photovoltaic systems.
Purely feeding electricity into the grid is indeed unlikely to be very profitable. However, with self-consumption and the guaranteed continued rise in electricity prices (who do you think pays for the new, expensive underground lines? Increase in the Renewable Energy Act surcharge!), it is a worthwhile investment.
Quality modules don’t break down after just a few years either.
nordanney schrieb:
Reasonable modules do not fail after just a few years.I honestly think that’s a myth... they all basically do the same thing...
I’m not being negative... I just believe there’s no need to sugarcoat it... a standard roof equipped with photovoltaic panels or solar thermal systems in our latitudes is not cost-effective... the investment simply doesn’t pay off because the available area is too small, yet the problems are the same as with a large system... meaning wear and other faults... hotspots, cracks, faulty diodes, and so on.
However, I think it’s great that people install photovoltaic or solar thermal systems on their roofs... I also think it’s great when I see an electric car on the street... but in terms of profitability, it’s not viable.
oleda222 schrieb:
Assuming the solar system provides 100% of the hot water year-round, otherwise the situation looks even worse. ...and assuming you get the €3,000.00 financed at 0.00% interest. Otherwise, you can subtract another €30 from the approximately €160....
--> I'm glad that, despite the planned gas boiler, I can avoid having to put something on the roof.
f-pNo schrieb:
Somewhat generally speaking, and you probably don’t have either.
Without going into a detailed calculation, a photovoltaic system usually pays off after about 12-15 years – depending on the agreed feed-in tariff, interest rate, repayment share, self-consumption achieved, and the current electricity price.
...Statements like this aren’t convincing without an example calculation. Didn’t you even run the numbers?
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