Twice the height of the Empire State - massive solar tower for AZ
Really?  Very cool idea, but some of the claims sound downright ridiculous.First, the zero maintenance claim that is touted at least 3 times by the article seems suspicious.  You can't really leave anything out in the desert sun and not have to maintain or replace it.  Sun will disintegrate a lot of material, not to mention wind and sand.  Anybody have any info or insight into what material they are using to create the "greenhouse"?Additionally, the claim that "In fact, because you're creating a greenhouse underneath, it actually turns out to be remarkably good for growing vegetation under there." does not seem to jibe at all with the claimed temperatures ("add in the greenhouse effect and you've got a temperature under your collector somewhere around 80-90 degrees (176-194 F)").  I'm not sure I'm familiar with any vegetation that grows in near 200 degree temperatures.Does anyone have any actual experience with this kind of tech?