This repository contains material used for the OSeMOSYS training workshop co-hosted by the Climate Compatible Growth (CCG) programme, TecAnalytics, and CIGZambia in Lusaka, Zambia, from 2 to 5 March 2025. This material has been produced with support from the Climate Compatible Growth (CCG) programme. CCG is funded by UK aid from the UK government. However, the views expressed herein do not necessarily reflect the UK government's official policies.