This is the best integrative solution to megawatt calss phtovoltaic power station.The system consists of 2 units of high efficient PV inverters,one unit of mid-voltage transformer(step up transformer).AC power,DC power, monitoring communications ,and other mobile devices integrated  in a mobile house, thereby enhancing the systemn security as well as relaiblility ,convinent to transport and installation ,improving system efficiency and power output as well.