ᐅ Photovoltaics at Any Cost – Current Situation and Available Options
Created on: 31 Jul 2022 13:22
H
HnghusBY
Hello everyone,
After countless rejections due to overload, availability, and delivery issues, I have finally received an offer for a photovoltaic system.
The system is planned for our new build (completion in 2023). We have a gable roof, almost south-facing, with a 30-degree pitch, fully usable, about 50 sqm (540 sq ft) of roof area per side.
The house is being built in Bavaria, about 60 km (37 miles) from Thuringia.
The offer surprised me a bit. The following items are included:
14x MAXEON modules at 430 W each, heat pump system, totaling 6.02 kWp - €11,138
1x Tesla Powerwall 2.0, 13.5 kWh - €10,400
Installation, etc. - €3,130
Total: €24,668 net
I find that quite expensive. I would leave out the battery anyway, but even then, I think the price for the 6 kWp system is too high. Apparently, this is currently the price you pay in Bavaria if you can find someone at all. For me, the question is whether it even makes sense to invest right now or just pay for electricity. Of course, it’s a matter of calculation, but if you follow the discussions here, those prices seem sky-high — or not?
Is it better to get offers from other regions? Are there any recommendations around the 97XXX area?
After countless rejections due to overload, availability, and delivery issues, I have finally received an offer for a photovoltaic system.
The system is planned for our new build (completion in 2023). We have a gable roof, almost south-facing, with a 30-degree pitch, fully usable, about 50 sqm (540 sq ft) of roof area per side.
The house is being built in Bavaria, about 60 km (37 miles) from Thuringia.
The offer surprised me a bit. The following items are included:
14x MAXEON modules at 430 W each, heat pump system, totaling 6.02 kWp - €11,138
1x Tesla Powerwall 2.0, 13.5 kWh - €10,400
Installation, etc. - €3,130
Total: €24,668 net
I find that quite expensive. I would leave out the battery anyway, but even then, I think the price for the 6 kWp system is too high. Apparently, this is currently the price you pay in Bavaria if you can find someone at all. For me, the question is whether it even makes sense to invest right now or just pay for electricity. Of course, it’s a matter of calculation, but if you follow the discussions here, those prices seem sky-high — or not?
Is it better to get offers from other regions? Are there any recommendations around the 97XXX area?
Stefan001 schrieb:
Summarized once again:
Calculate the maximum withdrawal power by factoring in the cycles per year over the expected lifetime and then dividing by the costs.
The cycles per year depend on the (time-related) pattern of electricity consumption, the storage system, and the solar system.
The efficiency of the house, etc., only matters in terms of electricity consumption. Very well summarized.
And even then, this calculation is only a rough estimate, often favoring the storage system.
Losses are not considered here (for these, the lost feed-in tariff should be accounted for), and figures can reach up to 20%, depending on individual setup. Taxes may also affect the calculation, along with a few other minor factors.
Sometimes the error starts early because many mention the cost of the storage system using the invoice amount for the storage itself but forget that, without storage, you would generally have gotten a significantly cheaper inverter.
But I will repeat again: there are not only economic reasons. For example, many insurance companies are also willing to spend money accepting the "desired" risk of not getting it back.
D
DaGoodness24 Nov 2022 08:49face26 schrieb:
Sometimes the mistake starts early because many people mention the cost of the battery and simply take the amount shown on the invoice for the battery, forgetting that without a battery, they would generally have gotten a significantly cheaper inverter.There are also cases where you have to offset the cost of the inverter because, due to the battery, you don’t need an additional inverter at all.
For example, in our case, the inverter is integrated into the battery 😉
S
Stefan00124 Nov 2022 08:55Speaking of which, I just almost fell off my chair when I thought about the opportunity costs (is that the right term here?)
If I invest 5,000 Euros annually at a fixed 2%, I would earn 100 Euros in interest per year. In my previous example, with 200 cycles and 6 kWh, that still amounts to about 8 cents per kWh! The situation looks increasingly unfavorable the more you think about it...
PS: By the way, my storage system was installed yesterday 😉 😳 :p
If I invest 5,000 Euros annually at a fixed 2%, I would earn 100 Euros in interest per year. In my previous example, with 200 cycles and 6 kWh, that still amounts to about 8 cents per kWh! The situation looks increasingly unfavorable the more you think about it...
PS: By the way, my storage system was installed yesterday 😉 😳 :p
DaGoodness schrieb:
And there are also cases where the cost of the inverter needs to be offset because, due to the battery storage, no additional inverter is required.
For example, in our case, the inverter is integrated into the battery storage system 😉 Well, I hope for you that if either one fails (battery storage or inverter), you don’t necessarily have to replace the whole system, or that the manufacturer is still available. :p
You keep throwing out bits and pieces here. That doesn’t help someone interested in battery storage at all.
So why don’t you say: When did you purchase it, how big is the battery, what did it cost you, and how many cycles do you get per year? Or rather, how much do you charge in and how much do you get out?
S
Stefan00124 Nov 2022 09:18sysrun80 schrieb:
This morning between 2 and 4 a.m., electricity was 27 cents per kWh from the grid. This afternoon, it costs about 50 cents per kWh. I will also charge the storage system here with "grid power" if it makes sense – otherwise, it would just be unused capital in winter. No.
Consider the battery’s lifetime... every kWh you put into the battery and then take out again also costs you money! With such a big price difference, it might still be worthwhile, but you should calculate that individually...
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