What?They're filled with oil.
A University of Texas study says 5 to 6 yrs to profitability... and that included shipping from Spain.they have a 20 year projected life span during which they barely make enough energy to pay for themselves
One 2019 study from engineers at the University of Texas at Arlington factored in the wind speeds from a working wind farm in Texas with 200 turbines. It examined in detail the energy it took to move the turbine components from where they were made in Spain to the Lone Star Wind Farm near Abilene. It also measured the energy it took to get raw materials to the factories in Spain where manufacturing took place. The wind at the Lone Star Wind Farm varies and the researchers used that data to find the actual average wind speed through the year.
They calculated a turbine that lasts 20 years will reach a full energy payback in less than six years. Link.
The average is actually 2.75Mw with the larger ones giving about 10Mw. Link.a typical unit makes 1 MW of electricity
the composite blades are not recyclable get cut up and go into land fills
GE says they are. Not only recyclable, but reducing the carbon impact of making cement in the process.
The process will make wind turbines fully recyclable, while reducing carbon dioxide emissions from cement production by a net 27%, according to environmental impact analysis by Quantis U.S. The reprocessed blade has a net-positive environmental impact by replacing coal or other raw materials in the cement production process, according to GE. Link.