As I explained a few days ago, I am sharing step by step the design parts of the electrical installation of a low energy building, and today I will put the lighting management system (LMS)design on my website for download. We can use natural and smart lighting to provide lighting in accordance with the 19th topic of Iran’s National Building Regulations. Daylighting was accomplished in various portions of this project with the help of the design team by installing appropriate windows and supplying daylight via the roof. A smart lighting system utilizing the KNX protocol was employed to minimize energy usage. This procedure is followed by several brands. Lighting calculations and optimum light distribution were also performed using Dialux software.