Rapid urbanization is developing together with an accelerated increase in urban poverty and difficult access to fresh, quality food in urban agglomerations. The general objective of the BISCUIT project is to support the concept of circular economy, helping the development of local urban agriculture. The project aims to demonstrate that renewable energy sources used for heating buildings in the cold season can also successfully address the energy needs of urban agriculture, in the process of preserving food in the warm season when fruits and vegetables are in abundance, being one step closer to the concept of sustainable urban communities. The BISCUIT project demonstrates the functionality and efficiency of the passive solar energy recovery system, integrating cascaded phase change materials, with the aim of passive heating in the cold season and drying of food from local urban agriculture in the warm season.