Autotune project has developed and tested automated tuning methodologies that enable building energy models to reproduce measured data by systematically adjusting input parameters so they match the real building. Research addressing practical considerations related to data integrity, application of domain-agnostic, multi-parameter, optimization techniques and testing methods are discussed. A standard method of test for calibration tools is being developed and an online Trinity Test web service implements one of the methods recommended to allow determination of whether the inputs set by a calibration algorithm are the correct values for the given building.