One of the prioritized and most important areas of GRASYS activity is the marketing of process gases on the “on-site” basis. According to this sales model, the plant is installed at customer site, while the customer only pays for the actually obtained gas volume. All capital costs associated with the development, construction and operation of the plant are borne by GRASYS. Besides, GRASYS bears all risks of the plant operability. Today, volume of sales based on the on-site model accounts for up to 30% of the entire process gas turnover in the countries with mature gas markets.