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With the underlying economic assumptions based on today's technologies and prices for High Voltage DC (HVDC)
transmission systems and based on estimations for the Energy Towers - both shown below the tables - the costs of electricity are calculated for two selected sites.
The upper table shows the results for the local costs as well as for the transmitted electricity in Middle Europe (Kassel).
The costs of electricity in Kassel
economically seem to be very interesting and thus would justify further research and efforts to erect at least a small scale pilot