sun’s rays at all times for the chosen solar window position.

Another of the latest solar energy devices that engineers have devised for this type of measurement is an iPhone application called the SolmetricIPV. This application can be easily downloaded for a small fee. A more high end - and high priced - application tool is the digital Solmetric Suneye, which at $1,000 costs quite a bit more. If your solar contractor is using one of these tools, you may be reassured that he or she is being diligent about finding the best placement for your solar system.