Since 2006 to nowadays sugar beet in Europe has suffered a deep transformation with the new Common Market Organization. That year, in Spain, farms gave up 50% of production quota. New century has come accompanied by different EU strategies, including the obligation of stimulating new energy sources development especially renewable energies. From a double perspective, the authors have made an empirical approach to learn about future viability of this sector in Spain. First of all, we present an economic analysis to reflect the actual situation of market goods offered by this farming. Then we present environmental efficiency analysis (Greenhouse Gases emissions) caused by sugar beet farms with the aim of studying environmental non-market goods derived from bio-ethanol production. Goods that take part of the environmental function of this economical activity as a positive externality which has become an essential characteristic of EU agrarian system.