In the 21st century, as mankind witnesses the increasing extremes of climate change, the urgency to use alternatives to fossil fuel power has increased in order to prevent a planet that becomes inhospitable. The key factor is no longer the selection of renewable technologies as these abound in their types and flavours, but the reality of the economics of the technology and their potential to compete on a parity basis with the fossil fuel generating plants. Society has now reached this position with the emergence of the distributed "Power Tower" variant of CSP. As our learned Bard wrote over 400 years ago, the truth will eventually be known and embraced as self evident, even in our high technology society with an insatiable appetite for energy and a habit for ignoring the truth, no matter how inconvenient!
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