"Feasibility of decarbonizing residential buildings – challenges and proposals in the context of Portugal" study developed for ZERO - Associação Sistema Terrestre Sustentável

This studys aims to conduct an exploratory and critical analysis of the feasibility of decarbonizing energy consumption in residential buildings in Portugal. The analysis is supported by the best available data, statistics, and scientific studies, as well as a review of the national policy plans and strategies that outline pathways and targets for achieving this goal. The report includes a quantitative analysis of the costs required to replace equipment for space heating and cooling, domestic water heating, cooking equipment, and lighting. Qualitative considerations regarding the context of the populations and territory are also considered. Qualitative research on technological availability and potential future stock evolution is conducted to supplement this analysis with market players in the technical energy systems for air conditioning and domestic water heating in households. The report also discusses potential funding sources and support mechanisms to achieve the outlined objectives. In this study, current challenges and barriers to decarbonization are identified, and potential technological solutions are evaluated based on the advantages and disadvantages of their application. The report outlines possible responses to the goal of decarbonising energy consumption in Portuguese households, considering the different characteristics and needs of the population. Finally, the conclusions and key information are synthesized into recommendations and alerts to inform and guide decision-makers and other social actors engaged in building this future at different scales.