This work compares different maximum power point tracking (MPPT) techniques to find which is more efficient in a 3U Cubesat. The comparison is between an active searching algorithm, perturb-and-observe (PO however, this paper presents results for different conditions on 3U Cubesats. The MPPT techniques compared in this paper are Perturb and Observe (P&O) and Linear Reoriented Coordinates Method (LRCM). The second section describes the MPPT techniques operation. Figure 1: Block diagram of a MPPT technique