On another note, I thought this was a joke but it's being reported in multiple places. The US is running short of "used cooking oil," or rather "waste oil." Source: Valero.
This is going to keep me up all night.
At the start of the pandemic, when gasoline demand in the United States tanked, several refiners took that time of slack demand to retool their refineries to process used cooking oil—instead of crude oil. At a time when demand was soft, those sizable federal and state incentives looked pretty enticing.
Of course, many of those projects could take years.
Even without those projects coming online, that feedstock is in such high demand that the United States is “close to being tapped out right now”, Martin Parish, senior vice president of alternative fuels at Valero said on its Q1 earnings call on Thursday, April 22, 2021.