This document discusses harnessing solar energy through an MPPT (maximum power point tracking) based control system using fuzzy logic. It begins with basics of solar photovoltaics including PV cells, modules, and arrays. It then covers MPPT techniques such as perturb and observe method and incremental conductance method. Finally, it describes implementing fuzzy logic for MPPT control, including fuzzification, inference, and defuzzification. Fuzzy logic provides a fast, accurate method for MPPT by using expert knowledge and measured data in an intelligent control algorithm. The document provides diagrams and explanations to describe these concepts at a high level.