CONTEXT AND NEEDS:The aquaculture sector has experienced an important development over the last half-century, which has led it nowadays to account for nearly half of the fish supply in the world. It is expected that the increase in future fish demand will be satisfied through aquaculture production. Aquaculture accounts for about 20% of seafood production in Europe and directly employs about 85 000 people, mostly in rural and coastal areas. The sector has started to incorporate the principles of sustainability from early stages. However, in the fields of energy and water efficiency, the different proposals focus on acting on the main existing horizontal technologies, such as pumps or filtering systems, or on the optimization of energy contracts to reduce costs. These proposals mean an improvement that soon is diminished by the appearance of new inefficiencies in other points of the facilities or by productive changes that demand new revisions on the conditions of acquisition of energy. The high energy consumption of this sector is due to the need to use high consumption technologies, such as pumps, aerators, or tempering systems, as well as the fact that many of these facilities are located far from cores urban areas, making an additional difficulty in terms of availability of energy resources. For these reasons, there is a growing demand for a minimum level of training in the energy field that allows, both those responsible for the production and the technical teams in charge of the control and maintenance of the farms, to detect and act appropriately on the inefficiencies that may occur in different energy and water systems. OBJECTIVES: The consortium proposed the development of the training program Energy and Water Efficiency in Aquaculture (EWEAS) whose objective was to offer these professionals the necessary skills to: - Detect significant plant consumption and establish its optimum working range. - Perform and interpret the measurements of energy consumption in the main equipment. - Get to know and understand the different concepts of billing and hiring of energy supplies, in order to facilitate decision-making - Determine which are the most relevant energy consumption indicators and their current values, as well as being able to recognize the variations that they may encounter, as an indication of improvements or problems in production.- - To be able to assess the foreseeable impact on these indicators of the proposals for energy or water improvement that may arise in the future, The tools provided address the computerized treatment of the information collected and the analysis of energy indicators and improvement proposals. It provides the operational managers of the centers, the capacity, and necessary tools for continuous plant control. Planning, detection of needs and evaluation of alternatives and decision-making is essential to guarantee an adequate future operation of the farms, from the point of view of energy and water efficiency. The training program has been transformed into an e-learning program to make all these resources available to the sector through an interactive platform. This Open Educational Ressource is accesible online to everyone The EWEAS program proposes best practices, innovative tools, and practical solutions in order to increase growth and productivity by reducing their carbon footprint and wastewaters. CONSORTIUM: -SGS Tecnos (Spain) is a multinational company leader in certification, inspection, and testing, with strong expertise in energy efficiency and environment, as well as being ERASMUS + project leader and coordinator, with great results success. - API (Italy) The Italian Fish Farm association, the main representative of the aquaculture sector in Italy. - AquaTT (Ireland) is an SME with a not-for-profit mandate which works to empower research in aquaculture and marine sectors. - KGZS - Chamber of Agriculture and Forestry of Slovenia is the representative organization for the agriculture, forestry, and fishery - Biedrība Eurofortis (Latvia) is an expert in European educational projects, developing learning tools and methods, as well as e-learning materials. BENEFICIARIES AND IMPACT:The main beneficiaries of this new training program are the aquaculture workers, professional associations of the sector, fish farm managers, energy agencies, as well as public and private training centers. The EWEAS program facilitates self-management and control of water and energy consumption, giving them simple tools for their control and management, it reduces their energy bill as well as the carbon emissions and wastewaters. These companies increase their energy efficiency and are able to accede to better certification, and their workers can gain professional skills, computer literacy, increase their mobility, and the procedures in the aquaculture facilities are more homogeneous at the European level.