On Sat, 23 Oct 2010 12:39:07 +0100 someone who may be John Rumm
wrote this:-

I wonder how much CO2 "free" power you need generate just of offset the
concrete?

6-12 months worth to recover the lifetime carbon costs, from
building to decommissioning.

See BWEA and the studies Vestas publish. Links provided many times
before.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000...#pt3-pb3-l1g54