This certified service life is calculated for “typical” sites described in the IEC 61400-1 standard and not for the specific site where the wind farm is installed (specific wind resources, topography, specific wind farm layout).
This difference results in a margin of extension of operational life (or residual life) beyond the certified life.
It is possible to calculate the potential margin for extending the operational life, which can range from +0 to +20 years beyond the certified life.
By 2025, more than 3,000 turbines will have exceeded 15 years of service life in France.
This represents 6 GW.
8.2 has carried out 541 life extension studies since 2013. That's 2,232 turbines. All types of turbines can be calculated. The 8.2 methodology follows the DIBt 2012, IEC 61400-1, and upcoming IEC 61400-28 guidelines.
