How close would a solar and wind-dependent power grid have come to giving us the electricity we needed during the three-week freeze in Alberta where the average temperature was -22 C from Dec. 15 to Jan. 9?... Alberta needs a supply of about 10,500 MW (megawatts) on average, said Mackay. If they are running at maximum capacity, solar can provide 736 MW and wind 2,269 MW.... If we had been reliant on far more solar and wind, how would we have done? “You’d have to start with rolling blackouts or brownouts,” Mackay said. “If we lost the bulk of our...