there are a lot of problems that will happen in a weather event like this. IMO It isn't cost effective to plan for these rare events. If so we would all have basements and better heat sources here in Texas, instead we have waterlines buried 12-14" deep and heat pumps which are EXTREMELY inefficient at these temps, and no real backup heat sources. Everyone will jump up and down and point fingers for a few weeks. I'm sure they will pass regs that will cost us more money in the short run,. 30 or 40 years when it happens again, and everyone and all the equipment is different than it is today, many of us will even be dead and gone, and the people running things will be shocked that this could happen.