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Even though eco-efficiency (EE) is already applied to various energy systems, so far, no study investigates in detail the hourly, marginal and seasonal impacts of a decentralized energy system. This study assesses the hourly EE of the Research Park Zellik (RPZ), located in the Brussels metropolitan area for 2022 composed of photovoltaic installations, wind turbines and batteries. A cradle-to-grave life cycle assessment (LCA) to identify the carbon footprint (CF) and a levelized cost of electricity (LCOE) calculation is conducted. An existing design optimization framework is applied to the RPZ. Consumption data are obtained from smart meters of five consumers at the RPZ on a one-hour time resolution for 2022 and upscaled based on the annual consumption of the RPZ. As the EE is presented as the sum of the CF and the LCOE, a lower EE corresponds to an economically and environmentally preferable energy system. In a comparative framework, the developed method is applied to two different case studies, namely, (i) to an energy system in Vega de Valcerce in Spain and (ii) to an energy system in Bèli Bartoka in Poland. The average EE of the RPZ energy system in 2022 is 0.15 per kWh, while the average EE of the Polish and Spanish energy systems are 1.48 and 0.36 per kWh, respectively. When analyzing four selected weeks, both the LCOE and CF of the RPZ energy system are driven by the consumption of the Belgian electricity grid mix. In contrast, due to the very low LCOE and CF of the renewable energy sources, in particular wind turbines, the RPZ energy system’s EE benefits and lies below the EE of the Belgium electricity grid mix.

ETIP Batteries Europe has been established as the “one-stop shop” for the battery-related R&I ecosystem and aims to accelerate the establishment of a competitive, sustainable and efficient value chain and globally competitive European battery industry through Research and Innovation to support the EU Green Deal and other EU policies.Thematic Working Group 2 is addressing the subjects related to Raw Materials for the Lithium Ione Batteries (LIB) industry from its Sustainable Sourcing and Processing from primary sources and also from secondary sources as well as combination of both by means of Collection and Recycling of EoL batteries. Several cross-cutting issues such as Second Life and Safety have been identified as important topics to be covered.The present Road Map for Raw materials and Recycling responds to the need for EU to be able to be competitive in Li-ion batteries business, i.e. to identify research and innovation areas where EU is strong on the Li-ion battery related raw materials and recycling and on other hand identify where there is lack of knowhow, knowledge and R&I.