SAFE POWER BEAM STARTUP

A remote power system includes a remote power transmitter arranged to output a power beam in a startup mode and a remote power receiver arranged to receive the power beam. The remote power receiver has a plurality of photovoltaic (PV) cells (or other power converters) mounted to generate electrical power from energy in the power beam, startup power monitoring (SPM) logic to determine, based on electrical power generated by each of the plurality of PV cells, whether or not the remote power transmitter can operate in a high-flux mode, and a receiver-based transmitter circuit arranged to communicate an indication that the remote power transmitter can operate in the high-flux mode.