Evaluation of photovoltaic system offer with storage

What would be a normal value?
I might have been a bit high, I only looked at one night as an example. I think 350-400 is more realistic.

It's not so easy to find a "normal value."
But with 400W you consume as much as a family of four.

However, for you this is only the base load, others use that for total electricity including cooking, washing, gaming, and so on.

And again, as a comparison, we are at about 250W.
And I would (unfortunately) also classify that as very much, because a lot of tech has accumulated with us too, like 2 refrigerators, fully occupied 24-port managed switch, servers, NAS, multiple access points, cameras, ventilation system, smart home, ...

But the ventilation system probably also kicks in hard. I'm still missing the network connection to it, it is possible that it currently runs day and night without going down to a lower level.

What kind of device is it and on which level?

350-400W I find really a lot. That's 10 kWh per day base load. Without major consumers, we typically have around 150W, but usually a laptop is already running then.

I find 350-400W really a lot. That’s 10 kWh per day of base load. Without major consumers, we typically stay around 150W, but usually a laptop is already running then.

With ventilation system and air-water heat pump?

What device and at which level is it running?

Vallox 350 MV. I can’t currently tell you at which level it’s running. Apart from the small display on the device, we don’t have any other access yet. It runs in the program "present," that much I know. But whether it switches to a lower level at night like our old one, I can’t tell you.

With ventilation system and air-water heat pump?

With fans. When hot water is produced, I count that as one of the heavy consumers. But you also have to say that we were previously at 800 kWh per year in the apartment.

I'll also give my two cents.

I have a 7.2 kWp system with a 10 kW battery using a Huawei system. I am very satisfied with it. It has been running completely trouble-free for over a year. I calculated and built the system myself. Costs including the battery were just under 10,000 euros last year, VAT included.

The size of the system fits almost perfectly with my consumption. I am very glad I decided to get a battery. Since March, I have not used any electricity from the grid. Previously, I had about 5,000 kWh electricity consumption including electric hot water production. Now after one year, I have about 1,500 kWh consumption over the winter. That’s how I calculated it, and that is how it is in reality.

Still, I feed a little more than 2,000 kWh into the grid, rather unintentionally. That is the surplus electricity from the photovoltaic system. Because of my south-facing system, the battery covers my electricity consumption completely from 5:00 pm to 9:00 am. Without the battery, I would have more feed-in but also more grid consumption. And the goal should be for everyone to minimize grid consumption as much as possible.

Currently, my battery empties to about 60 - 70 percent. The days are getting shorter. It will last until the beginning of November, then grid consumption starts again. For December and January, I expect zero photovoltaic electricity. During the time of highest electricity consumption, you have the least photovoltaic yield.

In summer, about just under 40 kWh daily yield is realistic, at Christmas 1 - 2 kWh.

Don’t skimp on the battery, you will regret it. There is nothing worse than having a photovoltaic system on the roof and the electricity meter starts spinning. Like this year in August, when it rained for weeks, the system barely managed to charge the battery. I was really glad to have my battery then.

But in the end, everyone can do what they want. The stupid talk that the battery doesn't pay off doesn’t matter to me at all. My system is paid off and there are 5,000 euros less in my account. So what? It doesn’t eat bread. I live very well with it.

how do you say "I want to see" in poker - And that means the total bill of all components including assembly materials. Thanks in advance!