RCREEE and League of Arab States Economic sector – Department of Environment and Housing, Water Resources and Sustainable Development have recently signed a memorandum of understanding to set a cooperation on diffusing the compliance tool for building Energy Efficiency code “EQUEST”. This software was developed by RCREEE for the benefit of the Arab countries to be used by the building designers and energy auditors as a powerful analysis tool to determine the building energy performance level. The two parties agreed on providing the software and the necessary technical assistance to each Arab country wishing to use it.