ᐅ Photovoltaic System: Costs and Savings Potential – Experiences?
Created on: 16 Jan 2020 10:50
H
Hans-Maulwurf
Hello everyone,
Since I have no prior experience, I would like to get some general information.
Our new building will be heated using an air-to-water heat pump.
What would generally and overall be the advantages, potential savings, and costs of installing a photovoltaic system on the roof? Is it worthwhile or not?
Since I have no prior experience, I would like to get some general information.
Our new building will be heated using an air-to-water heat pump.
What would generally and overall be the advantages, potential savings, and costs of installing a photovoltaic system on the roof? Is it worthwhile or not?
guckuck2 schrieb:
€7250 net should rather get you 6.6 kWp. I wouldn’t pay more than €1100 net per kWp, even for “smaller” systems.
Of course, it also depends on the components; LG is simply more expensive than JA. Whether it’s worth it is another question... The panels are even from JA, so we really got badly misled there. Inverter Kostal/Plenticore plus or similar – I think we should get Kostal.
That’s the first downside with a builder we have otherwise been perfectly happy with so far.
The figures vary everywhere. We buy electricity in Baden-Württemberg for about 30 cents/kWh, slightly higher, plus a monthly fixed fee of 13 euros. We sell the electricity for 10.08 cents/kWh, with a net monthly installment of 30 euros. How do you arrive at an annual compensation of 600 euros for 4 kWp (you are allowed to feed a maximum of 70% back into the grid without subsidies)?
blackm88 schrieb:
The numbers vary everywhere. We buy electricity in BW at around 30¢/kWh, slightly more actually, plus a €13/month fixed fee. We sell electricity for 10.08¢/kWh, with a net monthly advance payment of €30. How do you come to €600 compensation per year with 4 kWp (you are only allowed to feed in a maximum of 70% of that without subsidies)?Are you referring to me? We would only reach about €198 through feed-in tariffs. The last column adds feed-in compensation and the savings from "grid electricity not purchased" due to self-generation.
kati1337 schrieb:
Are you referring to me?
We would only reach about €198 (around $215) through feed-in. The last column adds feed-in and the savings potential from "self-generated electricity not purchased from the grid." Okay, you can also calculate it based on savings. We have had our photovoltaic system running since 11/2019 and have bought about €700 (around $760) less electricity since then. In April, for example, only 6 kWh...
blackm88 schrieb:
Okay, you can also calculate the savings with that. We have had our photovoltaic system in operation since 11/2019 and have since bought about €700 less electricity. In April, for example, only 6 kWh... Wow. Do you have a storage system? In April, I had a self-sufficiency rate of 58% and purchased 140 kWh.
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