Instead, one of the plans I've read about has to start a few black start capable power-plants first to get some kind of phase into the grid. Then you can bring consumers and solar parks online until there is enough load on the grid to bring up larger power plants, while the quick-reacting solar parks are taken online and offline to balance the grid so it never has too much or too little load on it.
> My concern is what happens when there’s a power outage? I’d then be feeding power into a system that’s “denergized”.
This is Germany, they would have studied that topic thoroughly. In short, the certified inverter that you must use for this would indeed shut down in case of a power loss. This is usually called "anti-islanding protection" and not an optional feature for this.
Electricity is rather cheap anyway. If you don't heat/cool water or the house with it, electricity cost in Germany is less than 100 EUR per month for a family of 4.
I'm not saying this is an unreasonable position, but the net present value of an investment that pays 10 euros a month for 4 years is also a couple of hundred euros. So in the end it might be a wash (or might not beat out investing in higher yield projects)
https://www.calculatorsoup.com/calculators/financial/present...
The inverter is designed to stop feeding power if the grid drops off.
It would be an either/or configuration if done as cheaply as possible such as for a balcony storage system, not capable of both usages simultaneously.
You would then need to have a separate distribution of power from the battery system to your loads. Such as something like a 1000W true sine wave inverter to power essentials like laptop, phone chargers, basic lighting etc during a full power outage.
That would cost a bit, but would let you use the same panels for emergency power
Look at the "Component proximity" bit here:
https://robinsun.es/en/products/robinsun-performance-basic-b...
There's probably other setups, but I bet this is how most of the small, cheap ones work.
Either way, there is no issue using the panels in the kit you linked to in the way described; they are separate panels with standard MC4 connectors. Just unplug the inverter and plug in the grid forming one.
We've move some distance away from toggling your transfer switch over to the battery charger. Just rewire all the panels, or put in relays at all the DC connections, or...
Either way, I’ve installed many panels with exactly these little boxes clipped to the back of them, and there is nice clean DC power to pull directly off the panel if you like by just disconnecting the inverter
This is not law works. Either way there absolutely is regulation in minute detail about backfeeding power into your home, in any jurisdiction in EU or USA I’m aware of
In practice you need to have a two-way meter installed by the power company and you're good to go.
I actually came across this article in my research and it’s the only thing I’ve found saying it’s legal if it’s under 800w. From what I’m gather it’s just a few solar panels and an inverter that feeds electricity into a socket, more or less. My concern is what happens when there’s a power outage? I’d then be feeding power into a system that’s “denergized”. I know with real solar setups there’s an automatic cutoff when that happens to protect people working on the lines…all the kits i see here mention nothing about a cutoff system.