|Fig. 1 Solar panel arrays rotated by HSATs|
|Fig. 2 Compare daily outputs of HSAT, AADAT, and fixed in four seasons.|
|Fig. 3 Compare annual outputs of HSAT, AADAT, and fixed.|
|Fig. 4 Compare wide- and narrow-spacing of HSAT arrays|
An important factor to consider in solar farm design is the choice of the inter-row spacing to avoid significant energy loss due to shading of adjacent rows in early morning and late afternoon. But you don't want the distance between two rows to be too far as the rows will occupy a large land area that makes no economic sense. With Energy3D, we can easily investigate the change of the energy output with regard to the change of the inter-row spacing. Figure 4 shows the gain from HSAT is greatly reduced when the rows are too close, essentially eliminating the advantages of using solar trackers. Despite of their ability to track the sun, HSATs still require space to achieve the optimal performance.