The newly developed energy model for geothermal greenhouse aquaponic systems was presented in Tenerife during the XI International Symposium on Protected Cultivation in Mild Winter Climates. The interest of the audience was piqued due to the circular potential that aquaponics offers in terms of renewable energy, nutrients and microorganisms. Companies and researchers indicated that food production systems in mild winter climates may have a particular interest in geothermal energy despite a low heat demand, if heating networks for optimal extraction are developed. These networks, servicing multiple food production and -processing activities, could decrease investment- and operating costs to make geothermal heating economically feasible.