Electric Reliability Council of Texas

Many of the millions of Texans who lost power for days after a deadly winter blast overwhelmed the electric grid now have it back, but the crisis was far from over in parts of the South with many people lacking safe drinking water.

Millions of people in Texas awoke on Wednesday without heat again, as power failures continued to plague the state following a historic winter storm that has killed 21 people so far.

A rare deep freeze in Texas that raised demand for power forced the U.S. state's electric grid operator on Monday to impose rotating blackouts that left nearly 3 million customers without electricity.

President Joe Biden declared an emergency on Monday, unlocking federal assistance to Texas, where temperatures on Monday ranged from minus 2 to minus 22 Celsius.