On a sunny day (8 Sep 2005 17:51:04 -0700) it happened "Mike"
wrote in
.com:

Boeing has been looking into generating electricity using solar heat.
See

http://www.boeing.com/assocproducts/...owertower.html

and especially

http://www.boeing.com/assocproducts/...lar2_final.pdf

quote from http://www.boeing.com/assocproducts/energy/articles/tower.html
A conventional 200-MWe coal power plant with a 63 percent capacity factor
yields a levelized energy cost of about 6¢/kw-hr, but an effective cost,
considering harmful emissions, of 11¢/kw-hr. In comparison, a 200-MWe solar
power tower plant with a 63 percent capacity factor is projected to yield a
levelized energy cost of about 8¢/kw-hr, but an effective cost of about
6¢/kw-hr when credit for pollution-free operation is factored in.
/quote

I have also looked at part of the mpeg movie from solar 1
Big project :-)