The document describes the Method for System Design for Sustainability (MSDS), which provides a framework to support the design of sustainable product-service systems. The MSDS method involves several phases - strategic analysis, exploring opportunities, system concept design, system design and engineering, and communication. It utilizes various tools to analyze sustainability priorities, generate ideas, develop system concepts, and evaluate concepts. The overall goal of the method is to guide designers in developing innovative system interactions and solutions that continuously improve environmental, socio-ethical and economic sustainability.