Figure 1. This figure provides an estimate of the maximum and minimum tonnage of EOL blade material for existing wind blades installed up to (but not after) 2019 in entire world (global), the U.S. and Europe (European Union, plus U.K.). The maximum scenario is based on the shortest service life,15 years, and the higher 14 t/MW blade conversion factor. The minimum scenario is based on the longest service life of 30 years and the lower 10 t/MW blade conversion factor. The predictions are based on total blade mass. All figures credit: Emma Delaney QUB (Re-Wind Network) There have been a number of journal papers and magazine articles published recently that have addressed the issue of wind turbine blade “waste.” Much of the evidence presented in these articles is felt to be too speculative in the opinion of the authors. Work undertaken by the Re-Wind Network team has raised six key issues for discussion of blade end of life (EOL). These include how to define wind turbine end of life; what is meant by recycling; the quoted time frames; mass and volume conversion issues; definition of tonnage; and location. We discuss these issues and the implications for predicting future blade waste and recycling potential below.