Because multiple curves are provided on the datasheet of the thermoelectric generator, the proper curve needs to be selected. Select the curve with the cold side value T_C representative of the application. Then, draw a vertical line on the graph through the hot side temperature axis that corresponds to the application hot side temperature. Optimal power output can be determined by drawing a horizontal line from the intersection of the power curve and the hot side vertical line drawn in step 2 to the Power axis. Optimal voltage output can be determined by drawing a horizontal line from the intersection of the voltage curve and the hot side vertical line drawn in step 2 to the Voltage axis. The intersection of the vertical line from step 2 and the bottom indicates the heat transfer rate through the TEG module for the given operating condition.