Photovoltaics are coming up - Options: 19 kWp, 25 kWp, 30 kWp, Storage?

has already said everything. Full agreement. I'll say it again just to be sure: fill the roof as much as possible, storage is usually more an emotional than a rational decision.

(The electricity consumption also sounds high for bathing 3-4 times a week, unless you fill the 700l tub every time.)

A Huawei system is very good and above all affordable. Even more important. Largely available. Basically, there are hardly any components on the market at the moment. Starting from modules, through inverters or cables, up to smart meters, etc.

I also do not believe in a quick improvement. I expect a calming down in maybe 5 years, if at all. Whoever has nothing so far will get nothing anymore.

Hybrid inverters for storage solutions are hardly available at all. No matter the company.

There are still Huawei storages on the open market. 15 kW for 8000 euros. Modules are still available from various providers on Ebay Kleinanzeigen at actually daily increasing prices. But one should also order there very promptly. Inverters must be ordered, delivery time uncertain. Smart meters hardly available. I don't know about mounting rails, they will certainly be very expensive. There are still Huawei inverters with immediate delivery, but they are twice as expensive. Still, it is worth it.

Roughly one can calculate with today's order online.
Trina Vertex module 400 W about 200 euros per module
15 kW storage Huawei Luna 2000 just under 8000 euros including shipping
Huawei Sun 10 KTL M1, three-phase about 3500 euros with immediate delivery
Huawei Smartmeter 280 euros with immediate delivery.

All Ebay or online shops etc.

Other systems like Fronius with BYD storage are currently not on the market.

Heat pumps are also only available very sporadically.

My tip. Configure the system yourself and order what is available tomorrow morning. Whoever waits one more week gets nothing anymore.

For a long time. The demand is huge and the stocks are empty.

Those who have nothing until now will not get anything anymore.

Modules are still available from various sellers on Ebay Kleinanzeigen at actually daily increasing prices. However, one should order there very promptly.

Those who have nothing until now will not get anything anymore.

But he does have an offer with "immediate" installation??? Ebay Kleinanzeigen would not be my source of choice for such an investment. The risk of getting defective, used goods, or something else there is probably quite high.

My tip: configure the system yourself and order what is available early tomorrow morning. Those who wait another week will get nothing anymore. For a long time.

Okay, then the pallets stand in the driveway and who exactly will then bring them onto the roof and connect them? That is basically harakiri at a time when one can hardly find electricians even for decent jobs.

His offer is perfect. Remove the storage and place the order. And if it is supposed to be a storage after all, then just have alternatives offered and live with a longer delivery time for the storage. That way you can at least take advantage of the tax.

Thank you for the many contributions, I will address the topic of heat pump consumption separately. I was surprised by the high consumption but have no experience with a heat pump and such a large area. We only moved into the new building in March 2020.

The weaker Solarwatt modules with 375 are immediately available or in stock at the supplier, while the Hyundai modules with 410Wp are only available “from” May. Exactly because of the uncertainties regarding delivery times, I am thinking about taking the solarwatt and fully covering the roof with them. They will be mounted with a 10-degree tilt.

Attached is the occupancy plan for the Solarwatt modules. Apparently, 12 more can fit, and I would reach about 30 KWp (the cuboid in the middle is our open atrium).



Whether with or without storage I still have to think about, but somehow I find it interesting despite the lack of profitability.

It makes me a bit suspicious that the Solarwatt modules are still the only ones immediately available at my supplier. Although not many left either, without knowing these modules, they somehow seem to be presented as slow movers.

Otherwise, it is up to each individual whether to procure the photovoltaic components on their own or to contact their solar installer. This primarily depends on the fear factor.

The suppliers all say that new goods are expected to arrive starting in May. Whether that will actually happen is, of course, a completely different matter. Right now, there is simply panic in the market. Everyone is desperately trying to get the last available goods.

In that case, storing delivered modules is the least of the problems.

Without available material, you cannot build. There is still quite a bit to buy. However, the time window is closing rapidly. And it doesn’t matter whether it’s sunflower oil or a few roof battens.

With new contracts, we are already well above the estimates at 45 cents per kWh for electricity, regardless of whether with storage or not.
The mentioned heat pump with 8400 kWh consumption then costs about 3750 euros in electricity per year. The only problem is when you rely on photovoltaics and they simply are not available. Really bad.

375 watts is no longer top-of-the-line, but it is also not really wasted space. Solarwatt has been on the market for a long time and is a reputable manufacturer. If you can get them reliably and have someone who can install them promptly, I would go for it. Storage considerations can certainly be made – but preferably only once the roof is full. The children will thank you.