TURIN :
Have there been many (any?) total electrical power failures that haven't been caused by loss of the engines too? I can't think of any.
Total , can't recall either, but partial ones with severe consequences, yes.
This one for instance :
Martinair -- Further Information from AWST and FI
The last lines of the text are interesting as to the consequences of even partilal E failures.
And this was on a good old cables /hudraulics airplane.