ᐅ Is it practical to install a photovoltaic system on the west or east side of a building?
Created on: 5 Jan 2020 18:42
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kaho674
Hello,
we are wondering whether we should install a photovoltaic system on the roof in the near future. The empty conduits for it are already in place. However, we have a hipped roof. On the south side, there is just over 20m² (215 sq ft) available for the system. Would it make sense to also use the west (or east) side to increase the area, even if the sun doesn’t hit it at the optimal angle?
we are wondering whether we should install a photovoltaic system on the roof in the near future. The empty conduits for it are already in place. However, we have a hipped roof. On the south side, there is just over 20m² (215 sq ft) available for the system. Would it make sense to also use the west (or east) side to increase the area, even if the sun doesn’t hit it at the optimal angle?
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ludwig88sta14 Jan 2020 11:39That’s true. Mentioning only the DAX shows a strong home bias – if anything, MSCI All Country would be more appropriate, but that’s a different topic from what the thread title suggests.
I keep reading about subsidies here. Do you mean the feed-in tariff? Because as of early 2020, the installation of photovoltaic systems is no longer subsidized (KfW, BAFA, or others), right?
@Specki which year is your KfW financing from?
Of course, nothing is actually “stored,” but you get back the electricity you cannot use yourself during the summer days over the winter for free. That’s why it’s a kind of “virtual storage.” Obviously, you remain dependent on the electricity provider, but it’s better than nothing (the low feed-in tariff).
I keep reading about subsidies here. Do you mean the feed-in tariff? Because as of early 2020, the installation of photovoltaic systems is no longer subsidized (KfW, BAFA, or others), right?
@Specki which year is your KfW financing from?
boxandroof schrieb:
How is that supposed to work technically? In my opinion, these are pure electricity contracts with deliberately opaque conditions. Nothing is stored there.
Of course, nothing is actually “stored,” but you get back the electricity you cannot use yourself during the summer days over the winter for free. That’s why it’s a kind of “virtual storage.” Obviously, you remain dependent on the electricity provider, but it’s better than nothing (the low feed-in tariff).
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ludwig88sta14 Jan 2020 11:46Specki schrieb:
Dec. 2020 KfW Loan 270 - Renewable Energies – Standard The promotional loan for electricity and heat
- From 1.03% effective annual interest rate
- Loan amount up to 50 million euros
- For systems generating electricity and heat, for grids and storage
- For photovoltaics, hydro, wind, biogas and much more
- For private individuals, companies, and public institutions
I was not aware of this, thanks! So this is a loan. But currently, there is no kind of grant (as a subsidy).
ludwig88sta schrieb:
Of course, nothing is actually "stored" there, but you effectively get the electricity that you can’t use yourself during the summer days back for free during the winter. That’s why it’s considered a kind of "virtual storage." Obviously, you’re still dependent on the utility provider, but it’s better than nothing (despite the low feed-in tariff). But you also pay fees of around 500€ (about 540 USD) per year for that, right? I’ve really studied the topic of photovoltaics a lot over the past few months and haven’t found anything that truly pays off. It mostly sells the nice appearance or the good feeling.
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ludwig88sta14 Jan 2020 11:48halmi schrieb:
But you also have to pay fees around 500€ per year (about $540), right? I’ve really studied the topic of photovoltaic systems a lot in recent months and haven’t found anything that truly pays off. It’s more about the appearance or the good feeling you get. This is all very new. However, once it becomes established, those 500€ (about $540) fees will decrease quite quickly as the market grows. Naturally, the larger the system, the better.
Forget all those cloud solutions!
They only make sense in very rare cases; otherwise, they’re pointless. If you want maximum return, you need to build your own system independently, use as much electricity as possible yourself, and feed any surplus back into the grid.
Just think about it logically: With a cloud system, someone is always making a profit. Somehow, that money has to come from somewhere. Exactly. From you!
They only make sense in very rare cases; otherwise, they’re pointless. If you want maximum return, you need to build your own system independently, use as much electricity as possible yourself, and feed any surplus back into the grid.
Just think about it logically: With a cloud system, someone is always making a profit. Somehow, that money has to come from somewhere. Exactly. From you!
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