whole life cycle
Not a concept that many people are either familiar with or choose to think about unfortunately.
Every large scale windfarm I've ever seen has involved massive amounts of ungreen input just to build, transport and install them, Same with maintenance, especially for offshore. The windfarm off Aberdeen (the one that Trump likes so much) had a blade problem not long after start up. The hub is around 120m above sea level and the blades are over 80m long. You don't fix that from a rowing boat.
Yet time and time again, I hear people saying it's ok to consume vast amounts of electricity because it's "green". Surely the answer is to consume less. Building windfarms in remote areas and ruining the environment for "cheap" electricity that's then wasted isn't the answer.