In the case of value chains, the view that it is worth tackling problems such as process integration or energy interaction (Mateos-Espejel et al., 2011) is increasing. Fig. 1 depicts the analyzed tomato drying value chain, which is made up of seven main sub-processes. This work specifically focuses on growing in greenhouses and the drying sub-processes, based on the fact that both display similar characteristics to be improved: i) high thermal energy requirement to fulfill the operation conditions and to obtain best product quality; ii) different seasonal/time trends for energy and water use; and iii) the need to reduce transportation energy.