Wind turbines produce energy over a lifetime of at least 20 years, and they are designed to withstand the induced loads from the environment. During that long operating time, we cannot avoid causing damage to a turbine and using up the utilized materials. To gain maximum benefit from the material of each turbine, we developed a method which makes best use of their given design damage budget by optimally distributing its usage over the operating time. An operational plan is optimized to do so.