Liquidlflare, produced by the Bermuda-based company's subsidiary Macaw Energies, takes the form of liquefied natural gas (LNG) after being converted from waste gases of oil production. It has a carbon intensity of -43 kilograms of carbon dioxide equivalent per million British thermal unit on a well-to-pump basis, the third-party sustainability certifier said in a statement. SCS used the United States Energy Department's GREET (Greenhouse Gases, Regulated Emissions and Energy Use in Technologies) analysis model and carbon footprint quantification guidelines from the International Organization for Standardization.