wikipedia integrity all discussions on this article are hypothetical with no scientific basis in fact the history talks about proposals there is only one questionable prototyope which is actuallty the jist of this entire article and very questionable at that then there is a proposed solar tower projects with artist's impressions and financial feasibility as which there are no fuel costs that are feasible somebody is waiting for alice in wonderland to show up this type of science fiction article should not be posted on wikipedia with an introduction that scientific article the introduction should state in bold face that it is a hypothetical type of renewable energy power plant that has been proposed but not actually ever produced i agree it's hypothetical this was made clear in the intro but i've added the word proposed in the first sentence to make it clearer talk