... output power 3)TUV,UL,MCS,CE,CEC,ISO 235W Poly Panel,A Grade,High Efficiency, TUV,MCS,UL,CE,CEC ... Techinical parameters: maximum power: 230W optimal operating voltage: 29.6 V optimal operating current: 7.82 A open circuit voltage: 36 ... .71 V short circuit current:8.25 A dimension: 1650*994*45mm ...