I remember reading an article about exactly that some time last year: https://spectrum.ieee.org/electric-inverter https://spectrum.ieee.org/electric-inverter Th

I remember reading an article about exactly that some time last year: https://spectrum.ieee.org/electric-inverter https://spectrum.ieee.org/electric-inverter The technology is grid forming inverters, unlike the normal grid following converters. I'm definitely not an expert, but I think the part you're quoting is hinting at the following: > Grid-following inverters operate only if they can “see” an existing voltage and frequency on the grid that they can synchronize to. They rely on controls that sense the frequency of the voltage waveform and lock onto that signal, usually by means of a technology called a phase-locked loop. So if the grid goes down, these inverters will stop injecting power because there is no voltage to follow. A key point here is that grid-following inverters do not deliver any inertia.