While I think a SPS = solar power satellite can be built (I think 3% of the intercepted solar energy would reach our power grid) I doubt that it would be cost effective even if we can make deliveries to GEO = geostationary orbit altitude for $200 per pound = $440 per kilogram.
The SPS frequency will likely be 556 megahertz or more. What is the "resonant/Tesla" frequency that would permit energy to be sent from space to Earth? Is this beam of energy electomagnetic photons or some unexplained energy beam of a somewhat different nature? If different, are humans less valnerable to 0.1 watts per square cm = one kilowatt per square meter than the microwave energy proposed for the SPS? Other details will be helpful = I don't want to read all of this 79 page thread. Neil