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I just found this database, which has some mass numbers (by far not all). For the REpower 6M, all of them (nacelle 325 t, rotor 135 t single blade 23 t). For the current 5 MW or greater turbines, where data was available, I calculated power/head mass ratios of 11-17 kW/t.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Tue Jun 25th, 2013 at 07:00:36 AM EST
[ Parent ]
Was going to post this, glad you found it. Most of the WTs are actually onshore turbines, and will never see the sea. But the offshore WTs are fully represented, AFAIK.

Notice how many turbines from Chinese OEMs grace the list.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin

by Crazy Horse on Tue Jun 25th, 2013 at 10:07:33 AM EST
[ Parent ]
Yeah, and not just Chinese: I see lots of venture capital there... I predict bankruptcy for most of them.

Speaking of on-shore: can you find me the mass data for the Enercon E-126? (It's not on the page on the turbine on the company homepage.)

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Tue Jun 25th, 2013 at 10:59:22 AM EST
[ Parent ]
Enercon E-112 has at THM of over 500 t, don't know if the 126 uses the same generator.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Thu Jun 27th, 2013 at 11:25:19 AM EST
[ Parent ]
I tried to look but found contradictory numbers: one source says the total is 650 t, but another claims that the nacelle is 365 t (140 t house + 102 t stator + 123 t rotor), and yet another (an in-house one to boot) that the rotor (as lifted in a single lift) is a sheer unbelievable 340 t (bringing the sum to 705 t). Either way, the impression that it is the top-heaviest holds. At a rated power of 7.58 MW, the lower THM above means 11.7 kW/t.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Thu Jun 27th, 2013 at 02:46:07 PM EST
[ Parent ]
the figure used in the most basic calculations regarding power/cost is the top head mass (THM), comprising everything above the last tower section, usually nacelle and rotor star.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Tue Jun 25th, 2013 at 10:09:54 AM EST
[ Parent ]
I think that I've shared this database before.  It's pretty thorough, although the coverage of proposed and in construction wind farms seems a little sparse.  For example, EON has been planning two major wind farms in the part of Indiana that I live in (I've been taking care of my parents) and they are missing from this.  It looks as though the one closest to me is DOA because of a mysteriously well organized anti-wind group in the area. The final straw was when one of the county commissioners, who has a home in the area of the proposed wind farm bought into the rhetoric that wind farms cause property devaluation, and maybe even disease.

Maybe this is a little OT, but has there been any effort to organize wind education groups that step in to educate the public when wind farms are proposed.  
It certainly seems that the opposition is well organized. (And, I suspect funded covertly by fossil fuel interests) At least in North America, the political obstacles seem to be an issue with expanding the penetration of wind power into the energy mix. I've been thinking that this might actually be something that someone could form a non-profit or consultancy around.....

 

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg

by ManfromMiddletown (manfrommiddletown at lycos dot com) on Wed Jun 26th, 2013 at 07:26:00 PM EST
[ Parent ]
I think that I've shared this database before.

They hid the turbine database behind a paywall...

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Thu Jun 27th, 2013 at 04:45:51 AM EST
[ Parent ]

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