This issue includes articles that were presented at the 2nd International Scientific-Practical Conference "Machine Building and Energy: New Concepts and Technologies" (MBENCT 2023), which was held on December 4-5, 2023, at the Azerbaijan Technical University (AzTU) in Baku (Azerbaijan) and was organized by AzTU, the Brandenburg University of Technology Cottbus–Senftenberg (Brandenburg, Germany) and Gazi University (Türkiye). The presented research results focused on the search for development prospects of enterprises in the fields of machine building and energy, new scientific and production solutions, technologies, and economically efficient production areas in the current situation. The publication will be useful to engineers from mechanical engineering, ecology protection, power engineering, mechatronics and engineering management.