I have created a collection of Python scripts designed to copy an Annual Training Plan (ATP) to intervals.icu:
richardadvocaat/ATP2intervals.icu
These scripts include additional tools for feedback on the training load and a script that extracts planned loads from workouts in an Excel sheet, making it easier to populate the ATP based on already planned workouts. For the ATP, I used the sheet provided by @Gerald and @MedTechCD: APPS EXCEL - a guide to getting started - Guide Intervals.icu Forum.
Not only will the target loads be summarized, but also events and training focus will be included in a note.