How to Use: Select a state within the contiguous United States below. The number of top sites recommended, PR, maximum distance from transmission lines, and map resolution can also be modified below. . Assessing a potential site for a renewable electricity project involves considering the site's technical, economic, policy, and other variables. Imagine investing in a solar power plant only to find out that the location doesn't receive enough sunlight or is prone to extreme weather conditions. This could significantly impact the. . This solar site selection tool was created to demonstrate how utility scale solar energy production can be increased by optimizing site location. The tool considers three factors: Global Horizontal Irradiance (otherwise abbreviated as GHI, the amount of electromagnetic energy a horizontal surface. . The location and conditions of a site directly influence the ROI of your solar project. Using our satellite technology and weather models, you can access in-depth data for any site, without the need for on-site measurements.