This document summarizes Shell's process for developing qualitative scenarios to model energy demand and futures. It discusses how Shell uses scenarios to test strategies, identify opportunities and threats, and make risky decisions more transparent. Scenarios are developed through analyzing interactions between politics, environment, technology, society and economics. They must be plausible, internally consistent, challenging and have consequences. Shell's scenario methodology includes understanding key uncertainties and developing quantitative models to underpin qualitative storylines about different potential futures.