https://www.sciencedaily.com/releases/2021/02/210216114930.htm

Urgent focus is needed now to proactively use the remaining years until turbines installed in the 1990s and early 2000s are no longer safely functional in 2025, to prevent safety lapses, potentially huge costs and the irretrievable loss of the skillset required for safe decommission.

The research shows that these original turbines have an approximate lifetime of 20 to 25 years, but this expectation is vulnerable to factors that occur whilst in use. Within each early-model turbine, there exist thousands of components and parts that have worn down, become replaced and fixed without estimates on their installation time frame, and are nearing the end of their life expectancy.