LNG: clean carbon-free energy source of the future. Scientists and the Department of Energy highlight LNG to be the cleanest fossil fuel and possibly to comply with the new environmental standards. In this emerging market of cleaner renewable decarbonizing fuels, improving energy efficiency is an essential tool in the reduction of CO2 emissions, alongside energy conservation and low-carbon energy sources such as renewables and carbon capture and storage. We’re taking responsible steps to cut carbon pollution and fight climate change.