As sponsor, Sun Microsystems was present at the latest G8 summit in Scotland.
Good place to push their thin-client solution called “SunRay”:
A Sun Ray client requires, on average, 15 watts of power in comparison to the 300 watts required for the average PC; the heat output is one-tenth of a PC; and considerably less energy and environmentally sensitive material is required to manufacture a SunRay client.
Full article: http://www.sun.com/smi/Press/sunflash/2005-07/sunflash.20050706.1.html