Exxon Mobil

RANK23

The oil and gas giant had a tumultuous year, in which global lockdowns shredded energy demand, and prices for oil futures briefly dipped into negative territory. The Irving, Texas-based company swung to a $22 billion annual loss in 2020, its largest ever, from a profit of over $14 billion the previous year; debt jumped too. “The past year presented the most challenging market conditions Exxon Mobil has ever experienced,” CEO Darren Woods said in a statement announcing its 2020 results. Meanwhile, the company said it would launch a new business unit to commercialize low-carbon technology. First up: carbon capture and storage.