NAM (Nederlandse Aardolie Maatschappij), a joint venture between Royal Dutch Shell and ExxonMobil, originated in the mid- 1990s. Its goal was to find the most cost-effective way to extract gas and extend the life of the Groningen gas field, ensuring that the field could continue to supply the region. The challenging parameters of the project were to provide availability of at least 87 percent and produce a low total cost of ownership. By following these parameters and upgrading the equipment, including the motors and compressors, the gas field could supply gas to all of Netherlands, Germany and Belgium for an additional 40 years.User requirements were for high reliability, high energy efficiency, low maintenance and low investment cost across a wide compressor speed range with minimal vibration & noise. Waukesha Magnetic Bearings™ partnered with Siemens to initially install three radial active magnetic bearings for the motor, two radial magnetic bearings and an active magnetic thrust bearing on the compressor, and a digital controller with analog amplifiers. There have been a total of 20 installations since the initial installation. Waukesha Magnetic Bearings has produced the bearings for every installation even though the machines have varied significantly in terms of number of stages, hence the dynamics of the rotor. Waukesha Magnetic Bearings was able to adjust for these differences through software in the controllers.