Unit for power after time-frequency transform

I’m just wondering if anyone can confirm the appropriate unit for power values resulting from mne.time_frequency.tfr_morlet on EEG data. Is it just uV^2 / Hz ?

I think it should be V^2 / Hz as the output powers are usually in the 1e-12 range, and MNE expects data to be imported in V.

But I couldn’t find a note on units in the tfr_morlet, so another confirmation would be helpful!