The latest from Kymco USA Steven Oliver, Director of Service and Logistics the stator is rated at above 12 amps @5000 rpm at 14 volts(assuming regulated output. There is NO WAY to ask the question right the first time to get the type of answer needed!) which gives about 150 to 165 watts. Total available. Now I will measure the amps when the bike is running and maybe get the difference.
Side info: our three-phase regulator-rectifiers are the "shorting" type meaning they short the stator output to ground to regulate the voltage output of the system. This also means the heavier load on the system LIGHTENS the waste heat load on the regulator. Of course, this also increases the heat load on the rectifier!