ᐅ Photovoltaic Systems: Advantages, Disadvantages, Experiences, and Is It Worthwhile?
Created on: 9 Jul 2014 11:42
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Fortuna86
Hello,
I would like to know your opinions on the topic of photovoltaic systems.
The plan is for a house with 140 sqm (1507 sq ft) with a south-facing roof.
Is financing such a system worthwhile?
What are your personal experiences in this area?
Do you have to feed the electricity into the grid, or is it allowed/possible to use it yourself?
Are there any special incentives or subsidies available?
What disadvantages does installing such a system have (please don’t mention “appearance”)?
I would like to know your opinions on the topic of photovoltaic systems.
The plan is for a house with 140 sqm (1507 sq ft) with a south-facing roof.
Is financing such a system worthwhile?
What are your personal experiences in this area?
Do you have to feed the electricity into the grid, or is it allowed/possible to use it yourself?
Are there any special incentives or subsidies available?
What disadvantages does installing such a system have (please don’t mention “appearance”)?
blackm88 schrieb:
KfW with 0.5% effective interest ... for me it’s 79€/month (about $86/month) over 15 years
Yes, there are providers offering "heat electricity" – I still have this, but it will be discontinued because otherwise there is no coupling of the storage/photovoltaic with the heat pump. I want to trigger the heat pump via HomeManager and then fully utilize the storage. Interaction between photovoltaic + storage + heat pump + weather forecasts
Heat electricity is currently around 0.20€/kWh (about $0.22/kWh) plus a basic fee... KfW interest is actually 1.03%...
79€ (about $86) sounds pretty good, but that doesn’t cover the monthly electricity consumption, does it?
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boxandroof2 Sep 2019 23:39The feed-in tariff guaranteed for over 20 years finances the system without self-consumption.
My first month (see #123) looked like this: about €110 (approximately $120) feed-in tariff, about €50 (approximately $55) savings on electricity consumption. Winter will be worse.
The interest costs for 10 kWp are about €5 (approximately $5.50) per month on average over your 15-year term.
My first month (see #123) looked like this: about €110 (approximately $120) feed-in tariff, about €50 (approximately $55) savings on electricity consumption. Winter will be worse.
The interest costs for 10 kWp are about €5 (approximately $5.50) per month on average over your 15-year term.
fragg schrieb:
Heat pump, circulation line, 2 households, small child, clothes dryer, 3 refrigerators, air conditioning, rain shower... highest self-sufficiency rate was 88%. If I turn off air conditioning, circulation line and ventilation, certainly >90%. But do I want that?Our setup is almost exactly the same, just without air conditioning. My self-sufficiency for June 19 is 95%, July 19 is 91%, and August 19 is 90%.
We have 9.2 kWp on the roof and 10.5 kW storage.
M4rvin schrieb:
KfW is at 1.03%...
79€ (about 85 USD) sounds pretty good, but that doesn’t cover the monthly electricity consumption, right?I’m not paying 1800€ (about 2000 USD) in interest on 15k (about 16,500 USD) over 15 years, I thought we were below 1%.
The 79€ (about 85 USD) is the installment to KfW.