‘Passive Environmental Design Systems’ presents energy and environmental issues faced in the field of architecture and provides an introduction to the design of passive environmental systems for buildings, their integration into building fabric and structural systems, and selection of appropriate equipment and materials. Both the fundamental theories and presentations of case studies (including lessons from the vernacular) are used for applied understanding of environmental solutions to climate requirements. The module is delivered as a lecture series and assessed using a report on vernacular architecture and the application of passive strategies.