* connect your solar to the grid, sell off the excess (default for larger installations)
* connect your solar to the grid, donate the excess to the grid (easier from the paperwork perspective, doable for very small installations)
* have an "island" installation that's not connected to the main grid, move some devices to that island (you need two separate circuits, need to manage which device to put on which circuit)
* go fully island / off-grid (you only need one circuit, but need battery and enough power generation to go through the winter all by yourself)
The first two are definitively easier, the latter two only for real tinkerers / enthusiasts. So unless you count the latter two, the alternative to selling to the grid is donating the excess to the grid.
i own this solar inverter and i get to use on-grid mode when the grid is live during the day and if grid goes dark for any reason, i cut off supply outside and use the solar for home use WITHOUT BATTERIES. Been running this at home for 2 years now, 5 KWH inverter, 5.3 (i think) panels
This seems to big missing a major option:
* Connect your solar to the grid, but also to a local battery. Charge the battery with excess solar until battery is full, then sell/donate excess.
This has really started to become a viable option with solar panel prices being so low and battery prices (particularly lithium iron phosphate) dropping significantly in the last few years.
Unless this isn't a legal method anywhere in the EU, but I highly doubt that.
Up here in Lithuania we “store” excess power in grid and then pay a little for transmission when getting it back. Dunno exactly, but selling might be better since power is cheaper at night (but given current events - more expensive in winter).
* connect your solar to the grid, sell off the excess (default for larger installations)
* connect your solar to the grid, donate the excess to the grid (easier from the paperwork perspective, doable for very small installations)
* have an "island" installation that's not connected to the main grid, move some devices to that island (you need two separate circuits, need to manage which device to put on which circuit)
* go fully island / off-grid (you only need one circuit, but need battery and enough power generation to go through the winter all by yourself)
The first two are definitively easier, the latter two only for real tinkerers / enthusiasts. So unless you count the latter two, the alternative to selling to the grid is donating the excess to the grid.