When it is necessary to carry out reinforcement or safety works for a slope, most often technical solutions such as reinforced concrete retaining walls, gabion walls, or various types of screens are used. All these technical solutions are widely utilized because they belong to the category of traditional solutions. However, recently, they have become uneconomical because they require a large volume of materials, labor, and result in long execution times. In contrast to all these traditional solutions, the article aims to present the solution of reinforcement with reinforced earth retaining walls using geogrids. Beyond the functionality of reinforcement, the proposed technical solution must also offer several other important advantages, including reduced execution time, lower execution costs, compliance with environmental requirements, or meeting special aesthetic requirements (for reinforcing slopes near art works – bridges, viaducts, etc.). MSE (Mechanically Stabilized Earth) systems have a simple structure, consisting of the earth mass, geogrid reinforcement, and facades (usually made of reinforced concrete blocks or steel mesh). To facilitate the choice of reinforced earth retaining walls as reinforcement solutions, instead of traditional technical solutions, the authors present, in the form of a case study, the steps to create an analytical model to determine the plane behavior of the MSE solution. The calculation model presented was created based on numerical methods commonly used by geotechnical design softwares.