I stopped working for Ontario Hydro a long time ago in mid 90's so I'm not plugged in anymore, from what apI have read, delta V would be within the normal range and outage rates would be impacted more by reduced power system maintenance than the additional generation. The latest inverter based generators will help with many aspects; system stability, voltage dips, efficiency and outages, they can actually operate as an island and help restore the grid when it is taken down, so in short more good than bad.At any rate, that isn't really what I was asking. My interest is much more mundane. What have all the wind turbines and solar farms done to daily max and min voltages and outage rates?
Your friends comments about NUG make complete sense. The Wikipidia explanation appears to be accurate. I can say that I lived in Manitoba for about 20 years and their power system is lower cost and more reliable, however they are blessed with lots of hydro. IMO Ontario would be better off purchasing power from our two Canadian neighbours than their latest plan.