*2.1. System Architecture*

The coupling of the energy and water system is shown in Figure 5. The energy system supplies both the electrical demand of the island and the desalination unit. The electrical demand of the desalination system depends on the water storage level and is discussed further in Section 2.3. If excess RE generation is present, it is dispatched to the desalination system to generate more water. The generated water is sent to the water storage, from where the water demand is drawn. Details on the operation of the energy system is shown in Appendix A.

**Figure 5.** Architecture of the coupled energy and water system.
