This document compares LED lights and CFL/bulbs through Proteus simulations. It finds that LED lights are more efficient and consume less power than CFL/bulbs due to their simple structure and design. The document simulates LED lights and CFL/bulbs in both open and closed circuits. It concludes that understanding these simulations can help apply the findings to real-life applications like choosing the most efficient light bulb and saving money on electricity bills by opting for options that use less power.