Valero Energy Corporation is a leading independent petroleum refiner and producer of renewable fuels. The company's business model is centered around three primary segments: Refining, Renewable Diesel, and Ethanol. The Refining segment is the core revenue driver, operating 15 petroleum refineries across the United States, Canada, and the United Kingdom with a combined throughput capacity of approximately 3.2 million barrels per day. This segment produces conventional and premium gasolines, diesel, jet fuel, asphalt, petrochemicals, and other refined products. The Renewable Diesel segment operates through the Diamond Green Diesel joint venture, producing renewable diesel, renewable naphtha, and sustainable aviation fuel. The Ethanol segment operates 12 plants in the U.S. Mid-Continent region, producing ethanol and co-products such as dry distillers grains and inedible distillers corn oil for animal feed. Valero sells its refined products in wholesale rack and bulk markets, and through a network of retail outlets under brands such as Valero, Beacon, Diamond Shamrock, Shamrock, Ultramar, and Texaco. The company's competitive position is strengthened by its scale, geographic diversification, and significant investments in low-carbon initiatives and renewable energy production.