due to cold brittle behavior of the materials that they are made of.
"Lethbridge was -30 as was Drumheller, according to The Weather Network."
Actually we have known a solid week of minus forty quite often over the years in Central Alberta.
Also, snow accumulations and ice storms are bound to shut off solar at least for a while.
Here is the AESO forecast FWIW.
https://www.aeso.ca/grid/grid-planning/forecasting/wind-and-solar-power-forecasting/
"I am honoured to speak directly with Albertans about the road ahead for our province, the choices we face together, and how you will have the final say in shaping Alberta’s future within a strong and united Canada."
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