Are you saying that this weather is a 7-σ event? The report on the cold-weather-related rolling outages in 2011 would disagree with that. Yes, that only laste

Are you saying that this weather is a 7-σ event? The report on the cold-weather-related rolling outages in 2011 would disagree with that. Yes, that only lasted 4 hours, rather than 4 days, but the risk was known, just ignored or accepted.