Carlos Mandez waits in line to fill his propane tanks on Wednesday in Houston. Customers had to wait over an hour in the freezing rain to fill their tanks after historic snowfall and widespread power outages in Texas.

Carlos Mandez waits in line to fill his propane tanks Wednesday, Feb. 17, 2021, in Houston. Customers had to wait over an hour in the freezing rain to fill their tanks. Millions in Texas still had no power after a historic snowfall and single-digit temperatures created a surge of demand for electricity to warm up homes unaccustomed to such extreme lows, buckling the state’s power grid and causing widespread blackouts. (AP Photo/David J. Phillip)