Abstract: Embodiments of the invention provide methods and systems to analyze energy consumption and support demand management of a portfolio of facilities. Some embodiments of the invention include a computer implemented method for collecting and cleansing street addresses, time series energy consumption and weather data, classifying energy end-use types, detecting energy related characteristics, creating facility energy models, estimating energy savings potentials and generating customized recommendations for facilities. In some embodiments, the computer-implemented system and method also prioritizes a portfolio of facilities at each stage of the analysis based on facility data quality, level of confidence and energy savings potentials.