Normal operating cell temperature (NOCT) is the temperature at which the cells in a solar module operate under standard operating conditions (SOC). These conditions are: irradiance of 0.8 kW/m², 20�C ambient temperature, and average windspeed of 1 m/s, with the cell or module in an electrically open circuit state, the wind oriented parallel to the plane of the array, and all sides of the array fully exposed to the wind.