Cold weather events happened in 2011 and in 1989. The reason for the outages has to do with the maintenance to equipment at gas, coal and nuclear plants, which account for 2/3 of electricity production. Renewables were effected but not wholly to blame.

The main failures causing TX power woes occurred at legacy fossil fuel plants, not renewable energy facilities.

#1: It’s a once in a century weather event. California has constant energy problems and high prices. #2: The reason for blackouts is complex, but in summary: Texas took too many lessons from Cali, over-subsidized renewables, & pushed out baseload energy like natural gas.