Activities The work of the Study Committee is organised into equipment groups. Each of these is concerned with exchanging practice and experience on design, construction, test and behaviour of turbine generators, hydro generators, large motors and novel machines. In order to respond to the future environment, a series of strategic directions are being followed. In the field of condition monitoring the process is one of continuous evolution and development. The long term goal is the most effective operation of machines to optimise performance, reliability and efficiency and to inform maintenance decisions through understanding behaviour and signs of deterioration; Condition Based Maintenance Electrical Machine evolution cannot be divorced from the choice of fuel, methods of energy conversion, the closely related mechanical behaviour of prime mover turbines, pumps, fans etc and environmental issues. Work is being undertaken to ensure that future machines are capable of meeting envisaged system stability requirements. The long-term evolution of system designs and future requirements need to be anticipated. A dialogue with System Committees has been established to foreshadow the System requirements and harmonise with machine capability. The relationship between electrical machine issues and the mechanical behaviour of closely coupled prime movers and the overall representation of plants in system behaviour studies will need to be developed.