continuous solar orientation instead of POP. Additional reaction control propellant on the order of a few hundred tons per year would be required or, for the column/cable configuration, counterweights of some 7000 M.T. could be used (section IV-B-4). The system trade-offs relating to the power station have not taken into account any adverse impact of these fluctuations on the distribution grid. It is possible that inclusion of these considerations may alter the orbit and attitude recommended in this study, and further iterations of the trade-offs should be made. For efficient utilization, the full output of the rectenna should be fed as a base load to the grid at all times. As a consequence, variations in output (from various causes) and fluctuations in demand must be compensated by ground-based generating plants on the grid, requiring an interactive control with these plants.
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