ᐅ Solar power system quote for our single-family home

Created on: 21 Apr 2022 08:45
E
Elias_dee
Good morning,

Yesterday, we received a quote for a photovoltaic system. Our construction of the single-family house will start in October 2023 and is expected to be ready for occupancy in September 2024.

We have an annual electricity consumption of about 3000 kWh for our household, plus an unknown amount for the air-to-water heat pump (Weishaupt Biblock).

Our roof is oriented exactly south with a 25° pitch (gable roof). According to the calculation in the quote, the entire south roof is fully covered with modules (20 units), and the north roof is also equipped with 5 modules.

Attached you will find the details of the quote. The price is €20,900 net with battery storage and €15,900 net without storage.

What do you think of the offer? From what I understand in the discussions here on the forum, it is advisable to skip the battery storage. That would bring the cost to just under €16,000, which is a bit over €1,600 per kWp. That seems relatively expensive, doesn’t it?

Thank you very much in advance for your help.

Best regards,
Elias

Photovoltaik-Komplettanlage 9,75 kWp mit Q-Cells Q-Peak ML G9 390Wp und SolarEdge-Wechselrichter.


Stückliste: Position, Menge und Text mit K2-Montagesystem, Solarkabel, Erdungsmaterial


Tabelle mit Positionen 8–10: EVU-Anmeldung, Meßprotokoll, Inbetriebnahme; Gesamtpreis 20.900,00 €
E
Elias_dee
29 Apr 2022 11:27
netuser schrieb:

People who know their stuff recommend at least skipping solar thermal or sometimes even removing it to make room for photovoltaic panels 😉

So in this case, it’s less about the air-to-water heat pump and more about saving money 🙂
Okay, good to know. Thanks 🙂

The poor solar installers just want to make a living, after all... 🤨:p
N
netuser
29 Apr 2022 11:31
Elias_dee schrieb:

Okay, good to know. Thanks 🙂

The poor solar installers just have to/want to earn money too... 🤨:p

Earning money is understood less as "ripping off customers" 😉
At the same time, I don’t want to imply anything negative about your solar installer, maybe they just don’t know any better 😀
S
Scout**
29 Apr 2022 11:34
Regarding current prices, I can also contribute some information—I took part in a collective tender organized by a local solar citizen association in the Erlangen-Bamberg area. They requested offers on behalf of about 40 builders, aiming to negotiate group discounts.

The response came today:

Of the original 33 companies that were contacted by us or that reached out to us, eight initially registered to participate in the collective tender. These companies received the tender documents from us.

Three of the eight companies submitted prices or indicative price quotes. The other five companies were no longer able to provide feedback in the meantime. This includes, among others, the local company xx Solar.

Only the company xy, operating in northern Bavaria from zz, submitted a complete offer.
The nationwide company "ZXY GmbH" from ABC submitted at least four sample offers for photovoltaic systems in different power categories, but with prices valid only until May 5, 2022. The locally operating company I**** from W***** sent us only two non-binding indicative offers and noted that they are fully booked for the next 12 months.

Only the company ZZZ offered a discount scale.


Specifically, it looks like this:
Company 1 (local)
9.9 kWp for 15,600 net plus scaffolding (offer valid only up to 3m (10 feet) ridge height)
7,400 (it is unclear whether gross or net) for a 10 kWh battery storage option

Company 2 (regional/national)
9.4 kWp for 16,300 net, complete offer.
29.9 kWp for 36,500 net, likewise complete.
N
netuser
29 Apr 2022 12:11
I believe that the intended advantage of a collective tender process often turns into a disadvantage, as it directly excludes many smaller providers. Smaller companies simply cannot manage the required scope of work, while larger ones factor in higher margins, risks, and operating costs, resulting in less attractive offers.

In contrast, a small local solar installer may be able to act much more cost-effectively, flexibly, quickly, and even competently.

Personally, I consider such a tender process to be of little to no value when it comes to understanding price trends and the overall market situation.
D
Deliverer
29 Apr 2022 16:28
Scout** schrieb:

29.9 kWp for 36,500 net.
That comes to 1,200 per kWp. That’s pretty good at the moment. I would buy!

This example also clearly shows how the price per kWp decreases as the system size increases. The 10 kWp system is around 1,700 €.
S
Snowy36
29 Apr 2022 17:29
You need to know what you want; for me, it would be much bigger… but I am more interested in self-sufficiency, and for that, a storage system is better…
I don’t want to clutter the entire roof with it…

Similar topics