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Dissipating 10GW of heat is also a challenge in a sunny, hot, dry environment.

$10 billion is small change compare to the estimated all-inclusive cost of $10 billion for EACH 500MW data center ... $200 billion for 10GW.

Won't get you the necessary 4 9's uptime and energy sadly. Im still 100% for this -- but need another model for energy delivery.

100 sq km should suffice