Great idea! The OpenEEmeter can certainly be integrated into a django application, and it sounds like you have the right idea of what the library can be used to do. It's also python of course, so just pip install eemeter and you'll be able to call the library directly from django code. What you'll need to do is to get your time series data into pandas DataFrames with the right columns and indexes.

If you haven't used the library before, I'd suggest checking out our new tutorial and paying special attention to the data formats section, where we call out the three main required inputs: 1) meter data, 2) temperature data, and 3) project or intervention dates, and show demonstrate how to create a datasets with necessary format.

Phil