Low angle solar performance
Has my one seen data on performance by specific panel or general PV type for different incidence angles of solar radiation? All I can find so far is generic info. Jim
Forum Discussion
If azimuth is directly at the sun, the output of a panel changes with the cosine of the incident angle. If the sun is hitting the panel at an angle of 0 deg, the cosine of 0 is 1. That means you multiply the rating of the panel by 1 to get its output.
If the angle is 45 deg, the cosine of 45 is .7, so the output is 70%.
And so forth. A panel puts out its rated power under ideal conditions, but his gives you an idea of the importance of tilt. Tilting doubles my output in December.
If the angle is 45 deg, the cosine of 45 is .7, so the output is 70%.
And so forth. A panel puts out its rated power under ideal conditions, but his gives you an idea of the importance of tilt. Tilting doubles my output in December.
