INTRODUCTION
When not mounted flush on a roof, PV modules should be inclined at the optimum angle to maximize the annual energy output of the system. For grid connected systems, this angle is 10 degrees lower (flatter) than the latitude of the site.
Example: Sydney’s latitude is 34°. The optimum inclination is 10° lower, or 24°
GUIDE TO USE
The minimum inclination angle should be 10° to take allow rainfall to clean the modules. As a guide, the following table summaries the optimal inclination for Australian capital cities.
STAND ALONE SYSTEMS
Stand alone systems seek to maximize the energy generated in the winter months. These systems should be more steeply inclined, at latitude plus 10 degrees. However, to maximise energy generation In summer, advice tilt angle should be latitude minus 10 degree.
REFERENCE
This general rule is derived from the “Your Home Technical Manual”:
http://www.yourhome.gov.au/technical/fs67.html
Another good reference literature
https://www.solarpaneltilt.com
COMPLIANCE WITH CEC GUIDELINES
This advice complies with CEC guidelines, as stated in the CEC’s System Installation Guidelines for
Accredited Installers and Supervisors, Issue 6, September 2010.
For best year-round performance, a fixed PV array should be mounted facing true north (± 10°) at an inclination equal to the latitude (± 10°) angle or at an angle that will produce the best annual average performance taking into consideration: seasonal cloud patterns, local shading and environmental factors.
For Further information
For further information contact SunLock on 1300 655 554 or order@sunlock.com.au.