If you want to really analyze this you have to look at outage distributions (both size and duration). High voltage line disconnecting and leaving half a city in

If you want to really analyze this you have to look at outage distributions (both size and duration). High voltage line disconnecting and leaving half a city in the dark for an hour is weighted-outage-time equal to one town sitting without heating for a week. However, it would be quite hard to call such disconnections equal.