Sounds like a local problem then.
The flat I used to live in would often lose power, 4 or 5 times each winter, along with the 5 or 10 adjoining properties.
Across the rosd was still on.
It was a fault in the big green trasformer box down the road.
As far as I know it's still not been fixed yet, but I moved so it does't bother me any more.