We are using Darwin for energy management of our school district buildings which includes over 60 schools across 5 states (including multiple campuses). It has been very helpful so far! I can't think about anything that would be bad at current time but there's nothing really good as well either unless you have specific needs such an integration between different platforms or software programs used by students/teachers etc.. This program allows us automate most things related tp heating / cooling units thus saving millions per year compared ot manual tracking done manually every month!