Studies suggest that low cost fixes - particularly to do with more efficient use of energy - can save up to 20% of operating costs in electrical installations and production facilities. Regular monitoring and analysis of bills and overall consumption can help highlight when there is a problem but unfortunately do not isolate the source of wastage. Power and energy loggers provide one of the most convenient and accurate way of measuring electricity use, thus locating malfunctioning processes within an installation which can then be remedied.