Downtown Austin high-rises remained lit during power outages — what lessons were learned?

Thousands upon thousands of Austin residents endured days without power and heat during the once-in-a-lifetime winter storm that hit Central Texas between Feb. 14 and Feb. 18. Yet high-rise buildings in downtown Austin remained on despite an ERCOT mandate requiring the region’s residents to either limit or live without power use during record-cold temperatures — resulting in anger and uproar. Here's what happened, and what is expected to happen next time — if there is a next time.