1. U.S. Energy Information Administration, Monthly energy review, Tables 1.3 and 10.1, April 2021. https://www.eia.gov/energyexplained/us-energy-facts/
2. BP Statistical Review of World Energy 2021, full report. https://www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-economics/statistical-review/bp-stats-review-2021-full-report.pdf
3. Press release: Phillips 66 plans world’s largest renewable fuels plant, https://www.phillips66.com/newsroom/rodeo-renewed
4. https://biomassmagazine.com/articles/18768/marathon-neste-partner-on-martinez-conversion-project
5. https://www.eia.gov/energyexplained/electricity/electricity-in-the-us-generation-capacity-and-sales.php