Yes, the max beam intensity is < 250 W/m 2 , less than ¼ of the max sun intensity at the equator.
No, by design the system cannot be used as or converted into a weapon.
Unlikely, but there are mitigations if it is proven to be a problem.
No, heating is inconsequential and less than fossil fuel or terrestrial solar.
No, negligible absorption / heating in heavy rain, zero absorption in dry weather.
Possibly, but adaptive optics is the solution established technology for astronomical telescopes.
At GEO (38,000 km slant range) they will be invisible.
Managing EMI issues is a key consideration for the design.
Space Based Solar Power would need international negotiation with the ITU to allocate a band in the 1 – 10GHz range.
Historically it has been unaffordable because of high space launch costs. A range of factors now make it a viable concept.
SBSP provides base load 24/7/365 which is essential for grid stability with intermittent renewables.
No, the efficiency from generated DC on the SPS to grid is nearly 60%. Utilisation is nearly 100%.
It is true that it depends on a vibrant reusable launch market, but SBSP will itself energise that market.
The pilot beam is encrypted – the SPS is sparse and highly modular, so difficult to degrade.
Assembly at MEO to avoid LEO debris risk. SPS is sparse and highly modular, so difficult to degrade.
Orbits and trajectories need careful design to minimise time in VA belts. Concepts address this risk.