The Smith-Putnam turbine was 1941 or if you needed some vocational school students to show you how to bring costs down and set the modern form factor tvindkraft

The Smith-Putnam turbine was 1941 or if you needed some vocational school students to show you how to bring costs down and set the modern form factor tvindkraft was 1975, and a Shippingport worth of research would have moved solar about three decades down the learning curve, either starting from 1953 or the george cove array from 1906 if enough people had cared to pay attention to the concept in the ensuing 6 decades.