Insolation is the sun’s energy (power integrated over time) measured in kWh/m2.
Solar access is the percentage of insolation available to an array—shading versus no shading. Only insolation and shade within the array’s field of view is considered in calculating solar access.
Azimuth angle is a compass heading.
Elevation angle is the angle above the horizon.
Magnetic declination is the deviation of true south from magnetic south.
