**3. Source Modeling**

For a military application, it is likely that solar would be included as a renewable resource, instead of wind. Like wind resources, solar resources are intermittent and depend on weather conditions. The accurate prediction of solar irradiance is currently an important research area [16].

For military applications, portability is a key consideration [17], and the use of solar resources fits this requirement. Previous research has been completed on the inclusion of solar resources in military forward operating bases [18]. In this section, the proposed optimal high dimension droop control will be applied with a solar resource; only applications with wind resources have been demonstrated in previous chapters.

Solar irradiance measurements are taken each minute by the National Renewable Energy Laboratory (NREL). These are recorded at their Golden, CO location and stored as part of the Baseline Measurement System (BMS). The data for 1 June 2012 is used in simulation and HIL in the following sections, and is shown in Figure 2 [19].

**Figure 2.** Solar irradiance measured each minute on 1 June 2012.
