ᐅ Is it beneficial to prepare for photovoltaic systems during new construction?

Pwnage619 schrieb:

The construction will only be finished in 2023, so not possible immediately.

My main concern is whether I can install the patio roof beforehand without any worries, or if I might face problems later when installing a photovoltaic system.

When is the roof expected to go on approximately?

A patio roof – if it is walkable – might not be an issue. How many floors will there be? There are scaffolds that can be placed in the gutter and supported against the wall below. You should also ensure that access to the roof via a ladder next to it is possible.

With so much time available, many options are possible. For example, you could acquire a few components at a favorable price point. These generally only account for about 50–70% of the total costs. However, to reclaim VAT, VAT filings would be required. Since you would pay VAT on sales for two fewer years if not present, I think it’s better to clarify this carefully.

Addendum: For my planned size, I had estimated about 2,500 kWh/year feed-in. That would be around 50,000 kWh over 20 years. With an electric car and some percentage of degradation, it would rather be 40,000 or less. The 50 MWh represent roughly €60 (depending on the reduction) in lost feed-in compensation per month. In addition, there would be the paid household electricity.

Waiting one year cost me about €2,600.

4lpha0ne schrieb:

I had estimated about 2500 kWh per year feed-in for my planned size. That would be around 50,000 kWh over 20 years. With an electric car and some percentage of degradation, more likely 40,000 kWh or less. The 50 MWh means roughly €60 (depending on reduction) per month in lost feed-in tariff.

If you get €720 feed-in tariff for 2500 kWh surplus per year (12 × €60), then your feed-in tariff is 28.8 cents per kWh. Congratulations. That rate is no longer available today.

hampshire schrieb:

If you receive 720€ feed-in tariff (12*60€) for an annual surplus of 2500 kWh (kilowatt-hours), then your feed-in tariff is 28.8 cents per kWh. Congratulations. You can no longer get that today.

Wrong. I was describing the monthly reduction of the feed-in tariff over 20 years.

For the shift from February to March 2021:
(€0.0804/kWh - €0.0792/kWh) * 50000 = a flat €60

Twelve such shifts would then amount to these 720€. Additionally, there is still what you continue to purchase yourself.

Note: The monthly changes of the feed-in tariff fluctuate.

By the way, I calculated and received the €60 together with lost household electricity savings from the company (in the form of a reduced invoice amount). 😉

4lpha0ne schrieb:

Wrong. I described the monthly reduction of the feed-in tariff over 20 years.

You probably meant that. However, you did not actually describe it.

4lpha0ne schrieb:

The 50 MWh already mean about €60 (depending on the reduction) of feed-in tariff not received per month

So not €60 per month. Apparently, €60 less tariff in total for each month of later system registration.

hampshire schrieb:
You probably meant this. You didn’t describe it.

It might not have been entirely clear here what "50 MWh," "reduction" have to do with the actual monthly payment (which is only a few euros anyway in March):

The 50 MWh means roughly €60 (depending on the reduction) of feed-in tariff not received per month.

But I made it much clearer that you do not receive €60 of feed-in tariff per month. 😉