Petroleum refiners also played a role in March's solid performance. (2020magazine.ca)
HollyFrontier (HFC) is one of the largest independent petroleum refiners in the U.S. Through six complex refineries (which process lower - cost heavy sour crude into a higher percentage of fuel), its subsidiaries produce and market gasoline, diesel, jet fuel, asphalt, heavy products and specialty products. (cabotwealth.com)
Most companies would be required to submit one tradable allowance for each metric ton of greenhouse gasses they emit, while petroleum refiners and importers would have to submit an allowance for each unit of petroleum product sold that will produce a metric ton of emissions. (heatisonline.org)