د.وداد ابوالقاسم الاسطي2026-09-232026-09-23https://dspace.academy.edu.ly/handle/123456789/2560In the characteristic measurements performance related characteristics of the wind turbine type is established. The type characteristics measurements comprise power performance tests, power quality tests. The foundations of the certification are standards and normative documents. Here should be distinguished wind energy specific norms and general norms, which may also be applied to wind turbines. Besides a certification of the product and the manufacturer there is sometimes an additional project specific test, especially when the local conditions are not covered by the general certification scheme.The certification and testing of wind turbines is very important to provide assurance to all entities involved in wind energy projects: wind farm operators, banks, government agencies, etc. People usually comprehend certification as the examination of companies, operators or products according to certain criteria. In the Wind Energy sector certification of products and manufacturers is a standard. The certification (of conformity) is a task done by independent institutions (or persons), which document that a result, procedure or service is in accordance with a certain standard or another certain normative document.Classification and Site assessment of wind farms according