United Airlines UAL and its corporate venture firm, United Airlines Ventures ("UAV"), which focuses on developing sustainable solutions and emerging technologies for the aerospace industry, announced an investment in and commercial agreement with Dimensional Energy. The move advances the company's goal of reaching 100% green net-zero emission by 2050 without using any carbon offset mechanism. Dimensional Energy will be using the Fischer-Tropsch process, a 100-year-old technology used to produce fuel from coal or methane, to make sustainable aviation fuels ("SAF").