Per Dan Walters at CalMatter: “Rather, it’s been repeatedly demonstrated that California’s relatively high gas prices are largely, if not completely, explainable by unique factors such as the state’s particular refining recipe meant to minimize smog-producing emissions, its high taxes, and its overall high cost of doing business.”
https://calmatters.org/commentary/2022/10/whos-to-blame-for-californias-high-gas-prices/