ebgb
  • ebgb
  • 50.2% (Neutral)
  • Newbie
13 years ago
"Buckhill" wrote:

Carbon emissions created by wind power - manufacture of machine, concrete bases, transport and erection - anybody ever worked it out?



yes! its called embodied energy

the energy need to mine the bauxite, transport to smelter, to smelt the aluminium to transport it around the world, remelt, cast and work, quarry the limestone and burn it for cement and so on

forecast lifespan of a turbine 25 years

average embodied energy payback 18-20 years - put another way how long it takes till a wind turbine becomes carbon neutral

then add in the woeful efficiency of the things and it becomes laughable how much power they contribute for the remainder of their lifetime - well it would be laughable if it weren't for the select few companies, organisations and individuals that have gotten very rich on the back of the things
stuey
  • stuey
  • 50.2% (Neutral)
  • Newbie
13 years ago
My business partner (very regular chap) was talking to one of the project managers for "crown" wind projects.

According to him, the return on the investment takes 6 months.

This is clearly a staggering figure.

There is also a very good reason for having them offshore, and it's not to do with a lower wind shear, meaning they can have shorter towers.

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