The concern with having the grids connected to Russia rather than the EU is that Russia might exploit this in the future (inducing instability on the grid for instance) so switching to the EU removes that risk
As for the US and ME monarchies, this applies more in general to the EU as a whole which depends quite a lot on imports for fossil fuels, but not all dependencies are made equal and at least for now Saudis and Americans haven't been invading countries in our neighborhood so I'd still take them over the Russians
The ideal scenario would be reducing as much as possible that dependency which is why there's a bunch of interest in renewables, energy efficiency and nuclear across the continent
The grids are being disconnected from russia but that doesn't mean that estonia was dependent on Russia for electricity before that
Looking at this https://oec.world/en/visualize/tree_map/hs92/import/est/all/... it seems like even before the 2022 war Estonian imports from russia of electricity were close to zero
The concern with having the grids connected to Russia rather than the EU is that Russia might exploit this in the future (inducing instability on the grid for instance) so switching to the EU removes that risk
As for the US and ME monarchies, this applies more in general to the EU as a whole which depends quite a lot on imports for fossil fuels, but not all dependencies are made equal and at least for now Saudis and Americans haven't been invading countries in our neighborhood so I'd still take them over the Russians
The ideal scenario would be reducing as much as possible that dependency which is why there's a bunch of interest in renewables, energy efficiency and nuclear across the continent