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The CTI 2050 Roadmap Tool

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This zero emissions pathway webtool is the outcome of a year-long effort of deep analytical work and active stakeholder engagement. It builds on the model developed as part of the Carbon Transparency Initiative (CTI) by the ClimateWorks Foundation and has been extended and upgraded for Europe with the support of the European Climate Foundation (ECF), in consultation with other experts in the field. This tool was developed with the use of a simulation model of European emissions and the mitigation options available now and in the future, analysing possible pathways to reach net-zero greenhouse gas (GHG) emissions.


The emissions scope of the model encompasses all sectors of the economy (Power production, industry, buildings, transportation, and Agriculture, Forestry and Land-Use (AFOLU)), and all GHG emissions sources covered by national inventories, including international aviation, shipping, and Land Use, Land-Use Change and Forestry (LULUCF). For each sector of the EU economy that emits GHGs, the GHG emissions drivers and means of reducing them – referred to as ‘levers’- are modelled. Rather than calculating optimal pathways, the model allows the user to choose the ambition level of each individual lever, from a reference level up to a maximum technical ambition, and thereby explore different scenarios or pathways by 2050.


One of the objectives of this work is to increase the analytical basis available to define the adequate political framework for the low-carbon transition, increasing model transparency, ease of use, the comparability of existing scenarios, and ultimately the access of policy makers to the most useful information for decision making. In this logic, the tool allows for the pathways used in the analysis to be explored in much greater details, as well as to design and test additional pathways. The conclusions from the project are based on three core scenarios and are detailed in the “Net-Zero by 2050: From Whether to How” report


The CTI 2050 Roadmap Tool is provided free of charge and requires user registration.