ᐅ Assessment of Photovoltaic Proposal Including Charging Station and Energy Storage

Good evening,

We have received an initial offer for a photovoltaic retrofit on our single-family home, and I would appreciate your evaluation:

What I basically like: The contractor is a local company from our town. So far, the communication has been very pleasant and friendly, which suggests a reliable execution to me.

Also, I have a question: I am somewhat lost in the maze of subsidies. Which specific incentives can I realistically plan for?

So the offer includes:
Photovoltaic system with 11.2 kWp and a total of 28 modules
Growatt 7.6 kWh (7.6 kilowatt-hour) battery storage (item costing approximately 4,000 €)
Growatt wallbox charger
as well as everything else like inverter, installation, registration with the grid operator, electrical panel modification, and so on

All for a total of 29,000 €

I look forward to your feedback

To be able to evaluate the price at all, some information about the installed components is important, such as the offered inverter, modules, etc., as well as the layout on the roof. It makes a significant difference whether a hip roof is covered on three sides or a gable roof on one side only.

Over 2000€/kWp = extremely expensive.

DTvomHaus schrieb:

For a total of €29,000

Is that gross or net?

11.2 kWp x €1,400 = €15,680
Plus €4,000 for the battery.

You should actually end up around €20,000 net…

Possibly plus extra charges for a hipped roof, scaffolding, …

Brutally expensive in my opinion...

About six months ago, I paid €1,250 / kWp.

Even considering inflation and price increases (around 35%), you should be under €1,700 / kWp.

You are at €2,200 / kWp (I assume this is the net amount?).

Thank you for your initial feedback, here are further details:

Standard gable roof, built in 1990, with a typical pitch; only one side will have panels installed, with normal access from the garden.

Growatt battery storage ARK HV 7.68 kWh (8.5 kWh)
Growatt Shine LAN-X data logger
Growatt SPH 10000TL3 BH-UP (inverter)
Trina Solar TSM-400-DE09.08 Vertex-S Black Frame 400 Watt (28 modules)
Growatt Wallbox Smart EV charger

The total price includes taxes; the net amount is just over 25,000.