Photovoltaic Current vs. Time of Day - Summer
Dave and Helen Damouth www.damouth.com
updated 3 October 1998
Click here for a full-sized graph. Notes: This
data is for a group of three Siemens SP75 panels, mounted flat on the trailer roof. Data
was taken in July, 1997, near St. John, New Brunswick. Approximate latitude was 45 degrees
21 minutes.
Note that on a day with fluffy white clouds which do not cover the sun, current can be up to 17% higher than for a clear day. This isn't particuarly useful, since occasionally one of these clouds will cover the sun, and there will usually be a net loss of energy for the day.