The abnormal increase in energy costs has led many fishfarms to critical economic sustainability conditions in recent years. The situation has improved, but the lesson has been learned and the trend of producing energy by farms with their own means has taken hold, from biogas to photovoltaic, even innovative ones such as floating PV. The push for greater self-sufficiency contributes to the decarbonization of the sector, a general objective of the European Union that is also shared by aquaculture.