Permanent magnet-synchronous-submersible motors in use
By replacing an asynchronous by a synchronous motor, the operator of the waterworks in Colbitz, Germany, could reduce the annual energy consumption of one well by approx. 24,500 kWh and could therefore save 3,900 Euros.
By the way – the German government initiated a fund to support the replacement of old and inefficient pumps and motors. Maybe other governments offer similar financial support.