This study aimed to identify the extent to which Sultan Qaboos University's libraries accredited green computing through employees' awareness and practice of green computing. The study relied on the quantitative descriptive approach to achieving its objectives. A questionnaire was used to collect data from the study community, and 42 staff members from 82 of the study community's total sample participated in its implementation. The questions were well formulated and a pilot test was made to ensure the validity of the questionnaire. Then a “test-retest” operation was done also to ensure the reliability of the questionnaire. The results of the study showed that an average degree of awareness of green computing exists in the libraries of Sultan Qaboos University, with an average calculation of 2.034 and a relative weight of 69.1%. The results also showed that green computing practices came at an average level both at the enterprise level and at the individual level because of poor awareness. Therefore, the study's recommendations include the need to raise awareness of green computing at the institutional and individual levels to convert to green institutions, as well as the development of policies and budgets for the application of green computing in information institutions in the Sultanate of Oman. Further studies on the subject should be conducted widely in Omani institutions, given its importance.