Here is a link to the Pickens 4GW $10bn project:
http://www.nytimes.com/2008/02/23/business/23wind.html?_r=1&oref=slogin&...

There is one heck of a price difference here, $2.50 watt against your figure of $1.80.
That's about a 65% price increase against your original $1.50

I am not saying your figures are like this, but I am pretty suspicious of costings in the renewables industry, they often seem to have taken off subsidies first, and in general got up to all sorts of games, just so long as they get their subsidies - the market basically stopped when Denmark stopped them.

I am particularly interested in your statement that the increase in costs is mainly due to supply shortages in the nacelles rather than rising material costs - have you got any breakdowns on this?

I'll see what I can find on Pickens, and nacelle costs.

" I am pretty suspicious of costings in the renewables industry, they often seem to have taken off subsidies first"

I'd note that we're talking about capital costs, and subsidies typically don't apply to capital costs.

"the market basically stopped when Denmark stopped them."

That doesn't tell us much. Developers may have been waiting for resumption, or gone somewhere else where things were slightly better. We should note that most sources of energy would halt without subsidies, explicit or implicit, such as guaranteed utility reimbursement for investment (a key factor in general), CO2 externalities, or Price-Anderson.