During implementation of Energy Saving projects, the resulting overall benefit is sometimes difficult to measure due to large scale of application, wide variety of measures applied and large dispersion of sites to be monitored. Energy Management applications overcomes these barriers and enables the central monitoring of Energy Saving projects. Various measures can be monitored such as energy saving in terms of kWh or money, estimation of accumulated benefit, effectiveness of measures under various environmental conditions, comparison of measure effectiveness among similar sites, reliability of applied measures etc.