We have been living in a golden age of technological achievement and quite frankly, if CSP was ever going to be possible to deliver baseload, cheaply and reliably it would have been done decades ago. Edison himself, who was more responsible than anyone for the power grid, gave much tthought to solar energy and thought it weas the way forward. In the decades since his death, we have achieved so much more technogically than even he could have dreamed of, but we still do not have baseload solar energy.

In an era which is going to see structural social changes and an unhinging of the consumer/industrial/financial complex, giant technological leaps forward are going to be few and far between. I'd put the chances of large scale CSP right up there with interstellar space travel. The only growing sector of energy management in the future is going to be radical conservation/reduction/elimination areas and most of this will be done with clever thinking rather than snazzy new gadgets.