Reformulated Gasoline Refinery Production Hits Five-Year Low: CEC

California’s refinery production of reformulated gasoline last week fell to its lowest in at least five years, while stockpiles of the fuel inched up during the period, according to California Energy Commission data released Wednesday.

CARB reformulated gasoline refinery inputs and production declined to 4.422 million bbl during the week ended Friday, which matched a five-year low set during the week of Nov. 14, 2025. It was also down sharply from 5.247 million bbl a week ago.

The decline in California’s RFG production can be attributed to the recent shutdowns of Phillips 66’s 156,000 b/d Los Angeles refinery and Valero Energy’s 150,000 b/d Benicia refinery in Northern California.

RFG stocks increased slightly to 5.978 million bbl from 5.951 million bbl a week ago, while they were higher than 5.317 million bbl seen during the same week last year.

Gasoline blending components, which are naphthas and can be imported to make finished motor gasoline, increased to 4.524 million bbl from 4.331 million bbl in the prior week.

Refining companies including Phillips 66 and Valero have committed to importing fuel to ensure adequate supply in California following the refinery closings, a move that tends to increase volatility.

CARB diesel refinery production climbed to 1.152 million bbl from 1.054 million bbl a week ago, and its stocks jumped to 1.894 million bbl from last week’s 1.681 million bbl. During the year-ago week, CARB diesel stocks were at 1.351 million bbl, CEC data showed.

California jet production eased to 1.909 million bbl from 1.973 million bbl in the prior week, and jet fuel stocks rose to 3.321 million bbl from 3.134 million bbl a week earlier. In the same week last year, jet stocks were at 3.171 million bbl.

Reporting by Frank Tang, ftang@opisnet.com; Editing by Michael Kelly, mkelly@opisnet.com