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At some point before 2050, satellites collecting solar power and beaming it back to Earth will become a primary energy source, streaming terawatts of electricity continuously from space. That's if you believe a recent report from the Pentagon's National Security Space Office, which says confidently that we will see "a basic proof-of-concept within 4-6 years and a substantial power demonstration as early as 2017-2020".
Originally posted by dominicus
It's not that they don't have it, it's just that the Gov usually has a 25-30 year contingency before any technology can be released.