Depends on how you define "this kind of event". Rolling blackouts due to cold weather, as happened in 2011? Probably a once in every 10 years event... but also

Depends on how you define "this kind of event". Rolling blackouts due to cold weather, as happened in 2011? Probably a once in every 10 years event... but also not exclusive to Texas. As others have pointed out, the other surrounding states which some have tried to make out were immune due to not thumbing their nose at federal regulations and being part of larger multi-state grids suffered the same problem, both recently and repeatedly in the past. The more widespread, specific to Texas grid failures? Those do seem to be a once in a lifetime event triggered by once in a lifetime weather. Either way, the widespread narrative where Texans suffer through this every ten years because they're right-wing morons who have the government they deserve whilst the rest of the country happily avoids it thanks to their superior government doesn't stand up to scrutiny at all.