{"id":39714,"date":"2026-11-08T08:22:15","date_gmt":"2026-11-08T07:22:15","guid":{"rendered":"https:\/\/www.co2news.sk\/?p=39714"},"modified":"2026-11-08T08:26:04","modified_gmt":"2026-11-08T07:26:04","slug":"methodology-for-identifying-inefficient-buildings-and-vulnerable-households","status":"publish","type":"post","link":"https:\/\/www.co2news.sk\/en\/2026\/11\/08\/methodology-for-identifying-inefficient-buildings-and-vulnerable-households\/","title":{"rendered":"Methodology for identifying inefficient buildings and vulnerable households"},"content":{"rendered":"<p><strong>Introduction and legislative framework of the EPBD<\/strong> Cities and municipalities face a complex challenge of how to effectively direct investments in building renovation while effectively combating energy poverty. <a href=\"https:\/\/euagenda.eu\/publications\/download\/851669\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #0000ff;\">Methodological approach<\/span><\/a> associated with the JustReno project provides municipalities with a structured and transparent tool for locating the worst performing buildings (WPB) and vulnerable households (VHH). This framework directly supports the implementation of two key priorities of the revised Energy Performance of Buildings Directive (EPBD): national progressive renovation trajectories for residential buildings under Article 9(2) and the prioritisation of vulnerable groups through targeted financial and support measures under Article 17.<\/p>\n<p><strong>Definition of key terms and local adaptation<\/strong><\/p>\n<p>For successful planning, it is essential to clearly anchor two working definitions and adapt them to the local context of the municipality.<\/p>\n<ul>\n<li><strong>The building with the worst energy performance (WPB):<\/strong> It represents a building belonging to the weakest part of the building stock, typically defined by the energy performance certificate class (e.g. class G according to the EPBD) or the national energy consumption threshold in kWh\/m\u00b2. Local authorities can also set stricter levels for sequencing interventions, or use local surrogate indicators (e.g. building age or reports of mould and heating faults), especially if complete EPC data is missing.<\/li>\n<li><strong>Vulnerable household (VHH):<\/strong> This is a household in energy poverty or exposed to high energy costs that lacks the means to renovate the building it occupies. Vulnerability usually arises from a combination of low income, poor housing conditions, disproportionate energy expenditure, older age, disability or low digital literacy.<\/li>\n<\/ul>\n<p><strong>Six-step framework and data management<\/strong><\/p>\n<p>The methodology guides municipalities through a structured process aimed at identifying, locating and quantifying:<\/p>\n<ol>\n<li><strong>Identification and localization of WPB:<\/strong> Identification of buildings based on EPC, audit or age and their address classification.<\/li>\n<li><strong>WPB quantification:<\/strong> Determining the total floor area, number of apartments and buildings.<\/li>\n<li><strong>Characteristics of WPB:<\/strong> A deeper analysis of the technical condition and repair needs.<\/li>\n<li><strong>Identification and characterization of VHH:<\/strong> Evaluation of the share of energy costs in income, benefit receipt and demographic risks.<\/li>\n<li><strong>Interference mapping (WPB \u00d7 VHH):<\/strong> Finding out where construction and social deficiencies come together.<\/li>\n<li><strong>Quantification of VHH in WPB:<\/strong> Estimate the number of people affected and the potential for emission savings.<\/li>\n<\/ol>\n<p>Data collection requires a systematic assessment of data availability and barriers. The tool will use a managed vocabulary to classify the status of processes, data availability and reasons for unavailability (e.g. lack of legal mandate or lack of records). This will highlight governance gaps that require legislative solutions at the national level.<\/p>\n<p><strong>Three methods of penetration mapping<\/strong><\/p>\n<p>To link building and household data, the methodology offers three practical methods according to the city&#039;s data capabilities:<\/p>\n<ul>\n<li><strong>Method 1 (Spatial heatmap penetration):<\/strong> Separate probability maps for WPB and VHH will be created, with their intersection determining priority zones. Targeted contact is then made based on residents&#039; consent, which protects privacy with aggregated data.<\/li>\n<li><strong>Method 2 (From buildings to residents):<\/strong> It is based on a list of known inefficient buildings and directly addresses their residents through a survey to verify their vulnerability.<\/li>\n<li><strong>Method 3 (From vulnerable households to buildings):<\/strong> It identifies known vulnerable households from the city&#039;s social network and then examines the technical condition of the buildings in which they live.<\/li>\n<\/ul>\n<p>Linking building and social data enables local governments to design more targeted financial schemes, advisory services and support measures. This integrated approach ensures that planned renovation of the local building stock not only delivers emissions savings but also a just transition without leaving vulnerable groups in energy poverty. <em><strong>JRi&amp;CO2AI\u00a0<\/strong><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00davod a legislat\u00edvny r\u00e1mec EPBD Mest\u00e1 a obce \u010delia komplexnej v\u00fdzve, ako efekt\u00edvne nasmerova\u0165 invest\u00edcie do obnovy budov a z\u00e1rove\u0148 \u00fa\u010dinne bojova\u0165 s energetickou chudobou. Metodick\u00fd pr\u00edstup spojen\u00fd s projektom JustReno poskytuje samospr\u00e1vam \u0161trukt\u00farovan\u00fd a transparentn\u00fd n\u00e1stroj na lokaliz\u00e1ciu budov s najhor\u0161ou energetickou hospod\u00e1rnos\u0165ou (WPB) a zranite\u013en\u00fdch dom\u00e1cnost\u00ed (VHH). Tento r\u00e1mec priamo podporuje implement\u00e1ciu dvoch [&hellip;]<\/p>","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27,4],"tags":[],"class_list":["post-39714","post","type-post","status-publish","format-standard","hentry","category-udrzatelnost_uhlikova-neutralita","category-klimaticka-zmena"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/posts\/39714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/comments?post=39714"}],"version-history":[{"count":4,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/posts\/39714\/revisions"}],"predecessor-version":[{"id":39718,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/posts\/39714\/revisions\/39718"}],"wp:attachment":[{"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/media?parent=39714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/categories?post=39714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.co2news.sk\/en\/wp-json\/wp\/v2\/tags?post=39714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}