It's been five years since catastrophic Texas blackouts. How much has changed?

FORT WORTH, TX - FEBRUARY 16: Pike Electric service trucks line up after a snow storm on February 16, 2021 in Fort Worth, Texas. Winter storm Uri has brought historic cold weather and power outages to Texas as storms have swept across 26 states with a mix of freezing temperatures and precipitation.

Power companies say they're better prepared for extreme weather, but challenges remain to electricity production as the state's demand grows

(Image credit: Ron Jenkins)