8. Repeat Case Study 7 for the MEO SunTower architecture to determine which of the markets ranging from City to Remote produces the best IRK Use a single SunTower as the basis for this assessment. 9. Repeat Case Study 7 for a LEO SunTower - MEO Relay architecture to determine which of the markets ranging from City to Remote provide the best IRK Presume a single SunTower with a full 24-hour duty cycle as the basis for this assessment. The full duty cycle will require a minimum of twelve relays. Reflect-Arrays are to be used as the relay satellites. 10. Repeat Case Study 7 for a LEO SunTower - GEO Relay architecture to determine which of the markets ranging from City to Remote provide the best IRR. Presume a single SunTower with a foil 24-hour duty cycle as the basis for this assessment. The foil duty cycle will require a minimum of seven relays. Reflect-Arrays are to be used as the relay satellites 11. Examine the performance of a LEO - MEO Relay architecture consisting of two LEO SunTowers and twelve Reflect-Array relays in three different orbits. Assume power transmission from SunTower to relay is limited to no more than 1 GW. 12. Examine the performance of LEO - GEO Relay architecture consisting of two LEO SunTowers and seven Reflect-Array relays in GEO. Assume power transmission from SunTower to relay is limited to no more than 1 GW. 13. Determine how much power can be delivered by a SunTower fleet consisting of 72 satellites in a 1400 km LEO Sun-Synchronous orbit. Assume that the primary market is peak power at the dusk terminator and (possibly) a hydrogen cracking market at the dawn terminator. Additional case studies were developed after examining the economic results of selected architectures in this initial set, in order to further examine and/or enhance their financial performance. These new case studies included the following: 14. Re-examine the financial performance of the 60 SolarDisc architecture of Case Study 4, taking into account the cost of externalities as surcharges on the price of electricity. 15. Re-examine the financial performance of the 21 satellite, MEO SunTower architecture of Case Study 5, taking into account the cost of externalities as surcharges on the price of electricity. 16. Expand the architecture of Case Study 5 to include 63 MEO SunTowers spread over six different orbits and compare the financial performance excluding the cost of externalities. 17. Determine the impact of including the cost of externalities on the financial performance of Case Study 16. 6.1.2. Space Segment Case Study Results The results of the case studies specific to the space segment portion of the SSP architectures are summarized in Tables 6-1 and 6-2 . These results were produced by the Space Segment Model and include all cases except those associated with the 1979 Reference System. That system was not run through the Space Segment Model and therefore Case Studies 2 and 3, are absent from Table 6-1. However, the IAAM model, using space segment information available from the earlier study reports, was used to examine and project the financial performance of the Reference System for those two Case Studies. Those IAAM results, along with the estimated financial performance for all the other Case Studies are reported following further discussion of the space segment. Also, note that Case Studies 14,
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