More than 1.5 million homes and businesses lost power, oil refineries in Texas cut gasoline and diesel production on equipment failures, and heating and power prices surged on the losses. Oil and gas output from North Dakota to Texas suffered freeze-ins, cutting supplies. Freeze-ins - in which ice crystals halt oil and gas production - this week trimmed production in North Dakota's oilfields by 300,000 to 350,000 barrels per day, or a third of normal. Power prices on Texas's grid also spiked to $3,700 per megawatt hour, prompting generators to add more power to the grid before prices fell back as thermal and solar supplies came online. That is the biggest drop in output since the February 2021 freeze knocked out power for millions in Texas.

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