Climate change is one of the main concerns of our times. Energy consumption in the form of fossil fuel combustion causes a major part of greenhouse gases. This includes direct use of fossil fuels for transportation and heating purposes as well as indirect consumption from the use of electricity. This module introduces students to the mechanisms behind climate change, their relation to the energy system, and approaches to regulate the energy system towards a sustainable future. After completing this module, students understand the scientific theory of climate change and are able to critically assess approaches to regulate greenhouse gases caused by the energy system.