All energy inevitably changes into heat eventually, and in the steady state, power in = power out.
There is no way to get rid of heat. It has to go somewhere; otherwise, the temperature of the system will increase without bound.
There is no way to get rid of heat. It has to go somewhere; otherwise, the temperature of the system will increase without bound.
Or if you magically beam 100% of the captured energy somewhere else, now that place gets to deal with shedding the heat from however many 1e26W+ of power were consumed. God help the poor planet you aim that ray of death at.