European Union (EU) policymaking is reacting to climate change with increasing seriousness and urgency. In November 2019, the European Parliament declared a global climate emergency and called for a target of 55% greenhouse gas (GHG) emissions reductions by 2030 in order to reach its target on climate neutrality by 2050. The new European Commission (EC) has decided on a European Green Deal that will transform the Union into a modern, resource-efficient and competitive economy, where there are no net emissions of greenhouse gases by 2050. By the end of 2019, all EU Member State were required to submit their final National Energy and Climate Plans (NECPs) for achieving the current EU Climate and Energy Framework targets of a 40% reduction in GHG emissions by 2030 (from 1990 levels). The main objective of this service is to produce a robust, simple and proportionate methodology that will allow competent planning authorities at national, regional and local administrative levels to quantify and forecast the influence of spatial planning policies on GHG emissions in a consistent manner. The methodology will be transformed into a flexible and user-centric web application. During the development, the knowledge demands and technical requirements of the four stakeholders included within this Targeted Analysis Project will be addressed and the web application will be tested through pilot application in each of the stakeholder case study territories.