They say low imports are part of the problem. BC has been importing power recently due to drought conditions through the fall the reservoirs are low, so I imagine BC isn’t selling much power to Alberta. In fact Alberta is exporting 96 MW at the moment[0]
Sounds like some folks in Alberta are one technical or mechanical problem away from being pretty cold, frozen water pipes, half charged car, etc.
The price has gone to the ceiling of $.99 per kWh [1]
0: http://ets.aeso.ca/ets_web/ip/Market/Reports/CSDReportServle...