Earlier this week our area was hit by a couple severe thunderstorms. Of course this resulted in many areas having their power knocked out including my office. During the follow up to having all our servers taken offline when the UPS batteries were exhausted I was following the progress of Toronto Hydro with this nifty outage tracker.
Along a similar vein, over at EISO you can follow energy generation and consumption in Ontario in pseudo real-time.
Also of course when the weather looks suspicious I have to check in with the local doppler radar.