Global warming is likely to reach 1.5°C as early as 2030. In an effort to limit the earth’s temperature rise beyond this point, the Intergovernmental Panel on Climate Change (IPCC) has developed pathways to decarbonize energy supplies. Meeting these targets will be a tall order for the oil and gas sector. Massive reserves remain worldwide to manufacture transport fuels and countless consumer products. In California, where the oil industry took off 150 years ago, the climate impacts of petroleum are among the largest in the world.