These inverters have to switch off if they cannot detect a grid signal, or if the grid frequency/voltage goes out of the safe range.

Same legislation as the non-plug&play inverters.

Does this mean if you have a main grid power outage the solar panel cannot provide your house with power either?

	▲	raphaelj 7 minutes ago \| parent \| next [-]
		Mine (Ecoflow Stream Ultra) has two 1200W regular sockets I can use while the grid down.
	▲	Confiks an hour ago \| parent \| prev \| next [-]
		Not necessarily, but most inverters (in Europe, at least) aren't designed to function without a grid anyway. Some models of inverter brands like Victron (which isn't very common outside its niche of self-sufficiency because they are rather expensive and sometimes complex) can form a micro-grid. They have the option of a special circuit breaker [1] that decouples the inverter from the grid if the grid is detected to be down, which allows their use during a power outage. [1] https://www.victronenergy.com/accessories/anti-islanding-box...
	▲	raddan 2 hours ago \| parent \| prev [-]
		Yes.