On Saturday, 18 January 2014 11:14:12 UTC, The Natural Philosopher wrote:

Cost of wind turbines remains static after 30 years at around £1m/Mw.

Please explain that.
How could a machine cost the same to run when it is 30 years old and older than the pound per meter per megawat it costs now?
(Shouldn't that read per square meter?)

(Wind foils and spherical geometry are OK by me; it's the maths that does my head in.)