Energy efficiency in the industry has received increasing attention in recent years. On the one hand there is the social context surrounding the global warming and also the growing recognition that energy has a significant impact on production costs and therefore on the competitiveness of Flemish companies. Based on these data and knowing the industry to 60% of energy by electromechanical drive systems will be converted to contribute this project to increase the efficiency of the drive systems. The Tetra 80144 Project started in 2008, attention was paid to the electric motor and its control. An engine with high efficiency is of course essential. Literature study also indicates that these losses in the transmission can amount to several percents. This project therefore aims to investigate. The questions in this project, they are for the volgenbde: * What trends are evident in the efficiency of conventional transmission components focusing on gearboxes and belt transmissions? * What is the impact of partial load operation and variable load on the transmission efficiency? * How can I make a quick assessment of the practice of losing a drive? * The transmission can include mechanical and electrical drive system optimally matched to each other and are dimensioned? * What is the impact of proper installation and maintenance in return? The results of the study are important for three groups. The first group comprises the end-user, usually production companies. Reduction of energy costs, immediately has an impact on their profits. In addition to a reduction in energy project results will make it possible in many cases to reduce maintenance costs and increase the life of the machine. Besides The provision of technical expertise, this project also encourage companies to implement a power management: how to renew a machine, or rupture of a drive component, the deployment of a better energy system solution. The second target group includes the machine builders. Standards Press about the energy consumption of their products and increasingly concrete questions from customers about efficiency are the main drivers. The latter group includes suppliers of machines and companies that provide support services around drives (alignment, maintenance). Nearly all suppliers bring new drive components with increased efficiency on the market. An increase in the use of these innovative products has a direct impact on their turnover. More and more companies not only focus on the sale of spare parts but also offer support services around selection, installation and maintenance of drive systems. For them can help the project results to demonstrate the need for such services for a good, energy efficient operation of power systems.