We produce synthetic natural gas using green electricity and CO2 from a biogas plant since 2013. We use CO2 as a raw material input that would otherwise be vented to the atmosphere. Hence, our product is CO2 neutral. Because it is exactly the same molecule as fossil methane - only made from green electricity - the SNG can be directly injected into the local gas grid. It substitutes fossil natural gas. It also avoids all the indirect CO2 and methane emissions created when natural gas is taken out of the ground and transported over long distances around the world (the so-called "well-to-tank" emissions).