ᐅ Solar system with storage unit in the garage, is it possible?

Created on: 9 Oct 2020 18:59
B
Bookstar
Hello everyone,

most people install their solar panels on the house roof. I’m wondering why that is. Wouldn’t it also be possible to install the system on the garage roof? I see the following advantages:

- No scaffolding needed
- Battery kept outside the house
- Direct current (DC) lines not inside the house
- Lower installation costs

I’m sure I’m missing something. It’s probably not technically feasible because the electrical panel is inside the house, right? What kind of connection would you need to plan? Is it possible to install an additional meter and distribution board in the garage?
B
Bookstar
3 Nov 2020 20:56
You didn’t read it correctly; the batteries have 150 kWh, not the charging power. My goal is to fully charge a car overnight, about 12 hours. But that is certainly not necessary.

For a few years, I’ll stick with the e-up, which only charges at 7.4 kW AC or 40 kW DC.
N
nordanney
3 Nov 2020 20:56
hampshire schrieb:

To everyone else: Starting from November 24th, there will be a KfW program offering a subsidy of 900€ per electric car charging point.
That seemed way too low to me. In North Rhine-Westphalia, you can still get much more. 60% of the costs (up to 2,000€) plus 500€ if you order a photovoltaic system at the same time => so I currently receive around 2,200€. This amount is available until the end of November (and also applies to new builds, whereas KfW only applies to existing buildings).
Z
Zaba12
3 Nov 2020 21:32
blackm88 schrieb:

With my storage system, I haven’t had to buy any electricity from early April to the end of October. My supplier must be happy about that.

Please show your log. I’d be interested to see it. Around Nuremberg (and that’s definitely not Hamburg) October was really bad. Since early October, I haven’t managed to fully charge the battery 10 times.
Production October 2020: green self-consumption, blue battery charging, orange grid feed-in, days 1–31
H
hampshire
3 Nov 2020 22:51
Bookstar schrieb:

You didn’t read it correctly, the batteries have 150 kWh, not charging power. My goal is to fully charge a car overnight, about 12 hours. But that’s definitely not necessary.

But for a few years I’ll stick with the e-up, which only charges at 7.4 kW AC or 40 kW DC.

That’s right, I misread it.
truce4 Nov 2020 00:07
Bookstar schrieb:

There are also restrictions, for example, you may only be allowed to charge at 11 kW.

That’s true, but after the subsidy, it might be possible to increase the power later on.


Modal window with note: Device with 11 kW charging power; Close icon visible