Our Foundation for Sports Environment General Technical Promotion Meeting aims to contribute to healthy, safe and sound social life of sports beneficiaries by conducting research and enlightenment projects that make use of various innovation in sports environment. To provide a comfortable sports enviroment with high spatial illuminance, we measured the illuminance throughout the competition space using the “spatial illumination simulation system” developed by LED companies such as Excel Co., Ltd under the guidance of Illuminating Engineering Institute of Japan and Hiroshima Institute of Technology. We hereby report the actual examples of application at Martial Arts Stadium of Hiroshima Prefectural General Stadium and the Hachinohe Techno-Ice Park in Hachinohe City, Aomori Prefecture.