This document summarizes a simulation approach to modeling quantum dot solar cells. It describes how quantum dots can enable intermediate band solar cells with efficiencies over 60% by absorbing low-energy photons. The modeling approach uses drift-diffusion equations coupled with rate equations to model carrier transport and capture/escape processes in the quantum dots. Simulation results are presented and show good agreement with experimental measurements, demonstrating how factors like quantum dot density and doping affect cell performance. Non-linear behavior is also examined and attributed to carrier dynamics in the quantum dots.