Well, being in Italy makes it tricky to be certain, but I *think* yesterday's power cut at home was WPD fixing the transformer, and the very limited logging I can access from here suggests we're now getting 240v ish.
Also, I have the phone number of the lovely engineer who both apologised for how long it's all taken, and pre-approved me for a full export limit (just in time for winter, but still...)
So the power saga looks to be almost over, and mostly sorted by leaving the country ;-)


