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

Created on: 9 Oct 2020 18:59

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?

Müllerin3 Nov 2020 10:35

#19

Maybe electric cars will be practical in 15 years... at the moment, they are not an option for us.

Bookstar3 Nov 2020 12:41

#20

Müllerin schrieb:

Maybe electric cars will be worthwhile in 15 years... at the moment, they are not an option for us.

What do you mean by that? Since we got our e-up, the rest of the vehicles just sit unused. No other car is nearly as fun to drive. And it’s economical too. Finally, no more trips to the gas station. 🙂

hampshire3 Nov 2020 19:11

#21

Müllerin schrieb:

And especially if the utility provider fails.

The probability is so low that I wouldn’t invest in complex technical solutions for that.

Bookstar schrieb:

That’s a very one-sided and not entirely accurate view. With a storage system, you will start making a profit after 15 years. Without storage, after 10 years.

Also a one-sided view. What is considered “accurate” depends on the underlying assumptions.

nordanney schrieb:

I have just signed the contract for a wallbox.

To everyone else: Starting November 24, there will be a KfW program offering a grant of €900 (approximately $980) per charging point for electric vehicles.

Bookstar3 Nov 2020 20:38

#22

hampshire schrieb:

To everyone else: Starting from November 24th, there will be a KfW program offering a subsidy of €900 (about $980) per charging point for electric vehicles.

This information is helpful, but unfortunately the subsidy is linked to smart charging stations. More details will be available in November. However, it will be expensive, and there will be restrictions—for example, charging will be limited to 11 kW (13.5 hp). Yes, that is sufficient for many people, but I wanted 22 kW (29.5 hp). The first electric cars with 150 kWh batteries are already on the horizon.

blackm883 Nov 2020 20:50

#23

With my storage system, I did not purchase any electricity from early April until the end of October. That must please my energy supplier.

hampshire3 Nov 2020 20:51

#24

Bookstar schrieb:

The first electric cars with 150 kWh batteries are already on the horizon

These have been around for a while, and currently, you can reliably get this charging power mainly at Tesla stations. Moreover, the price per kWh there is consistently fair. If you let the battery drain down to 5-10%, you can add about 400 km (250 miles) of range in 15-20 minutes. In Ellwangen, the E-tron is still charging at the XYZ station while the Tesla has already passed Kassel. Installing a 150 kW connection at home is expensive 😎 .

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

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