The Concentrating Solar Power (CSP) technology converts the energy of the concentrated sun light in thermal energy at middle-high temperature, which can be stored in a thermal energy storage (TES) unit or directly used to drive a convectional thermodynamic cycle (power unit). The CSP systems are a promising solution for the generation of dispatchable renewable electricity because of the TES that allows decoupling the electricity generation from the intermittent solar source. However, CSP plants can also produce other assets, mainly hydrogen or fresh water, or they can make use of fossil fuels to increase its flexibility: this plant modification is called hybridization.