ᐅ A photovoltaic system that pays for itself and breaks even on a monthly basis
Created on: 19 Nov 2019 07:35
G
Golfi90
Hello everyone…
Is it possible, in general terms, to install a photovoltaic system on a roof that pays for itself every month?
In other words, does it generate enough electricity so that a loan taken out for the system is covered by the savings on our electricity bills?
What is the current cost per square meter for a photovoltaic system, including installation and everything else? And how much electricity can it produce if installed on a south-east hip roof with a 28° pitch?
I have absolutely no idea about the amounts involved—both the cost of such a system and the electricity it generates.
We would probably need to install a battery as well… I also don’t know what that would cost.
A few experiences would be great, possibly even with concrete financing tips or personal stories.
Is it possible, in general terms, to install a photovoltaic system on a roof that pays for itself every month?
In other words, does it generate enough electricity so that a loan taken out for the system is covered by the savings on our electricity bills?
What is the current cost per square meter for a photovoltaic system, including installation and everything else? And how much electricity can it produce if installed on a south-east hip roof with a 28° pitch?
I have absolutely no idea about the amounts involved—both the cost of such a system and the electricity it generates.
We would probably need to install a battery as well… I also don’t know what that would cost.
A few experiences would be great, possibly even with concrete financing tips or personal stories.
G
Grobmutant20 Nov 2019 09:51Specki schrieb:
Attached is my calculation for my photovoltaic system. The scaffolding will arrive tomorrow. In 3 weeks, it will be installed on the roof, and it will be officially commissioned in January.
I would not recommend a battery storage system!
[...] Nice table. Is it available online anywhere for free use?
Unfortunately, I can’t upload it here. Send me a private message with your email address, and I’ll send it to you. I put it together myself, but as a very first basis, I used a table from someone else. I worked on it for quite a while, so it should fit reasonably well. If there are still any errors, please let me know.
G
Grobmutant20 Nov 2019 11:33@Specki Can you message me? I’m still missing a few contributions for that.
Specki schrieb:
Sorry, I must have missed that.
The house was built in 1964 and has a mortared ridge beam. This will be completely replaced with a dry ridge system, as it is no longer in very good condition and will likely deteriorate further due to the movement of the panels.
Additionally, there will be a snow guard installed on one side of the house, measuring 16m (52.5 ft) in length.
If you estimate around 2000,- for these two items, the cost comes to 886,- per kWp.
Since both tasks are being done by the solar installer and are related to the photovoltaic system, I included them in my profitability calculation.
Regards
Specki Including these costs in the profitability calculation naturally lowers it. However, it is beneficial for your depreciation and tax deductions if you can attribute them to the photovoltaic system instead of paying for them privately.
miho schrieb:
Including these works in the cost-effectiveness calculation naturally worsens it. However, it is beneficial for your depreciation and tax reduction if you can attribute it to the photovoltaic system, instead of paying for it privately.That's how it is There is also only one invoice for the complete package.
To be fair, it must also be said that both are only necessary now because of the photovoltaic system.