BepiColombo is a major joint European and Japanese mission to send a planetary explorer to Mercury. As such BepiColombo is exposed to high thermal loads. One of the most critical subsystems on BepiColombo is the MPO Solar Array. This presentation gives a short overview of the "simplified" thermal solar array model, which has been derived from the "detailed" and "reduced" model and is used to analyse thermal and power performance on the spacecraft. The "simplified" model uses the attitude and position of the spacecraft and SADM with respect to Mercury to determine the temperature of the hottest solar array cell. The "simplified" model will be used by ESA to generate solar array drive profiles in the course of mission planning.