Biogas upgrading to biomethane is based on energy-saving membrane technology. It allows to achieve the gas standards of natural gas required by gas utility operators. Methane is pumped into the gas pipe of medium pressure. Another option is to clean biogas from CO₂ and use methane as a fuel (CNG) for vehicles. In addition to biomethane production, the technology allows the production of carbon dioxide (CO₂) for the food industry, the beverage industry, and also for use in greenhouses.