SMART ALTITUDE aims at enabling and accelerating the implementation of low-carbon policies in winter tourism regions. Smart Altitude will demonstrate the efficiency of a decision support tool integrating all challenges into a step-by-step approach to energy transition. The approach is implemented in three case study sites and prepares for replication in 20 other tourist settlements in the Alpine Space. The project targets policymakers, infrastructure operators, investors, tourism associations and entrepreneurs organisations. Its outputs are a spatial diagnosis method, an online Smart Altitude Toolkit, Living Labs, a planning model for adaptation strategy implementation, a “replication roadmap” and a network of low-carbon winter tourism regions. The partnership and activities ensure the suitability of the approach across the Alpine Space, promote innovations and skills, and enable policymakers to plan and prioritize measures increasing the resilience of mountain areas.