The fallout from the EMP was relatively small, considering that it only really affected a minority of the population. It also helped that the empire hadn’t been caught off guard and had had time to prepare. Thus, the damage was relatively minor, only in the billions of END. And most of that was the damage to old “legacy” versions of their tech, as anything that had been released over the past six or eight months had been well shielded and hardened to resist EMP attacks. Even civilian tech was the same.
As for the electrical grid, that had been shielded from the very beginning. Thus, nothing connected to it faced any issues due to surges in the grid itself. Still, as part precaution and part political theater, the imperial press agency had reminded imperial citizens to ensure that any electrical appliance was unplugged at the time the CME hit, and for at least two hours afterward in case of any residual effects.