Welcome to the SunAngles website, where we invite you to explore solar energy the easy way, without calculating anything. We provide simple tools that let you watch real sunlight play over real objects in 3 dimensions to see how the sun works. The device that makes this possible is called a heliodon (HEE-leo-don). See our heliodon…

Like the moon, the earth is a ball in space perpetually intercepting solar radiation. Your site’s place in the sun depends on the angle it makes to the solar beam as a result of the site’s latitude, the time of day, and the date.
Read more about sun angles…