The legislation in some countries defines a group of solar systems (commonly known as “balcony solar”) which can be installed with only minimal administrative regulation. You can (and must) register such a system in a web application – that is all. The downside is that (1) you can have only one such system behind your official energy counter and (2) it must never feed more than a certain power (typically 800 W) into the grid and (3) you wil get no monetary compensation for the energy you are feeding. Because you never know how much energy will be consumed by your house in a given moment the sum of the inverters’ outputs must be delimited to 800 Watts (or whatever is the “balcony limit” in your country). This can be done with dymamic limiting and requires a bidirectional energy meter inside your fuse box which can talk to the inverters.
Conditions for using ES-Micro systems
Without limitation the full solar power will potentially go into the grid. If this is allowed in your location, perfect!
If the provider asks you to put a static limit of 70% (a usual value) on your inverters you should accept that. We can configure this for you before delivery or even afterwards. You do not need the energy counter in that case. The 70% limitation will only clip some peaks, which means that you will lose less than 10% of your possible energy production.
If nothing helps and your provider or your legal situation demand zero feeding or very low feeding (i.e. 800W) you must buy the Shelly 3EM (50€), have it installed inside your fuse box and configure the DTU for dynamic power regulation. We will help you with that.