{"id":4878,"date":"2026-08-05T09:24:14","date_gmt":"2026-08-05T09:24:14","guid":{"rendered":"http:\/\/mjarc.com\/2018\/08\/02\/certificados-de-energia-peritos-adene\/"},"modified":"2026-08-05T15:50:03","modified_gmt":"2026-08-05T15:50:03","slug":"energy-certificates-adene-experts","status":"publish","type":"post","link":"https:\/\/mjarc.com\/en\/energy-certificates-adene-experts\/","title":{"rendered":"Energy Performance Certificates &#8211; ADENE experts"},"content":{"rendered":"<p style=\"margin-bottom: 1.25em;\">An <strong>energy performance certificate<\/strong> is the official document that evaluates a property&#8217;s energy performance and assigns it an energy rating on a scale that clearly indicates how efficient or inefficient the building is. In Portugal, this certificate is mandatory in various situations, including property sales, leases, new construction, and specific urban rehabilitation projects.<\/p>\n<p style=\"margin-bottom: 1.25em;\">Far more than a legal formality or administrative requirement, an energy performance certificate is a valuable tool for property owners, buyers, and investors. It provides a diagnostic assessment of the building&#8217;s thermal comfort, estimates energy consumption, and guides improvements that genuinely enhance property value.<\/p>\n<p style=\"margin-bottom: 1.25em;\">The Building Energy Certification System (SCE \u2014 <em>Sistema de Certifica\u00e7\u00e3o Energ\u00e9tica dos Edif\u00edcios<\/em>) is regulated by Decree-Law no. 101-D\/2020. The official issuance of certificates is carried out exclusively by Qualified Experts recognized under the SCE framework.<\/p>\n<blockquote style=\"background-color: #f8f9fa; border-left: 4px solid #111; padding: 1.25em; margin: 1.5em 0;\">\n<p style=\"margin-bottom: 0.5em;\"><strong>Building Energy Certification System (SCE) Vision:<\/strong><\/p>\n<p style=\"margin-bottom: 0;\">An energy performance certificate serves as a guide for building renovation, helping to identify measures that improve indoor comfort, reduce operational costs, facilitate access to green financing, and open doors to tax incentives or reduced municipal fees.<\/p>\n<\/blockquote>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">What is an energy performance certificate?<\/h2>\n<p style=\"margin-bottom: 1.25em;\">An energy performance certificate is a digital document registered on the SCE Portal that summarizes the energy performance of a building or independent unit. Through this document, owners gain a thorough understanding of the property&#8217;s thermal behavior and receive a tailored set of technical improvement recommendations.<\/p>\n<p style=\"margin-bottom: 1.25em;\">Issuing this document allows property owners and investors to:<\/p>\n<ul style=\"margin-bottom: 1.25em;\">\n<li>\n<p style=\"margin-bottom: 0.5em;\">Accurately assess the property&#8217;s overall energy efficiency;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Identify opportunities for structural and technical system upgrades;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Reduce ongoing energy consumption and utility bills;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Enhance indoor thermal comfort during both summer and winter;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Support informed decisions regarding purchase, sale, rental, or renovation;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Increase the property&#8217;s market value in the real estate sector.<\/p>\n<\/li>\n<\/ul>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">When is an energy performance certificate mandatory?<\/h2>\n<p style=\"margin-bottom: 1.25em;\">As a general rule, obtaining an energy performance certificate is legally required when attempting to:<\/p>\n<ul style=\"margin-bottom: 1.25em;\">\n<li>\n<p style=\"margin-bottom: 0.5em;\">Sell or exchange a property;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Execute new lease contracts;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Construct a new building;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Carry out major renovations or rehabilitation works subject to municipal licensing;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Advertise a property for sale or lease on real estate portals (mandatory inclusion of the energy class rating).<\/p>\n<\/li>\n<\/ul>\n<p style=\"margin-bottom: 1.25em;\">For sellers or landlords, obtaining a certificate should not be left until the eve of signing the deed, as issuance delays can stall transactions. For buyers evaluating <a href=\"https:\/\/mjarc.com\/en\/cost-to-build-house-portugal\/\">how much it costs to build or buy a villa in Portugal<\/a>, the certificate serves as an excellent preliminary indicator of operational costs and potential modernization needs.<\/p>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">Who are ADENE&#8217;s Qualified Experts?<\/h2>\n<p style=\"margin-bottom: 1.25em;\">Qualified Experts (<em>Peritos Qualificados<\/em>) are technical professionals legally credentialed to carry out property energy evaluations and issue official certificates and pre-certificates.<\/p>\n<p style=\"margin-bottom: 1.25em;\">These professionals hold degrees in architecture or engineering, possess specialized qualifications within the SCE framework, and have a minimum of five years of professional experience. They are responsible for inspecting the building envelope, diagnosing mechanical systems, calculating energy consumption, and recommending technically and economically viable improvements.<\/p>\n<p style=\"margin-bottom: 1.25em;\">ADENE (National Energy Agency), as the managing entity of the SCE, oversees expert activity and conducts quality audits across the national certification system.<\/p>\n<blockquote style=\"background-color: #fff3cd; border-left: 4px solid #ffc107; padding: 1em 1.25em; margin: 1.5em 0;\">\n<p style=\"margin-bottom: 0.5em;\"><strong>Important Clarification:<\/strong><\/p>\n<p style=\"margin-bottom: 0;\">ADENE does not directly issue energy performance certificates or perform site inspections. Energy assessments are always conducted by an independent Qualified Expert. ADENE strictly manages the platform and credentials these technical professionals.<\/p>\n<\/blockquote>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">How to find a Qualified Expert<\/h2>\n<p style=\"margin-bottom: 1.25em;\">The most reliable way to hire a credentialed professional is through the official SCE directory of technicians available on the ADENE Portal. Before accepting a proposal, it is best to verify that:<\/p>\n<ul style=\"margin-bottom: 1.25em;\">\n<li>\n<p style=\"margin-bottom: 0.5em;\">The expert holds an active registration without suspensions on the SCE platform;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">The quote clearly itemizes professional fees, VAT, and the official public registration fee;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">A physical on-site technical inspection is explicitly scheduled;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Delivery deadlines and estimated document issuance timelines are clear.<\/p>\n<\/li>\n<\/ul>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">How much does an energy performance certificate cost?<\/h2>\n<p style=\"margin-bottom: 1.25em;\">The final cost of an energy performance certificate consists of two distinct components: the professional fees charged by the Qualified Expert (freely set by the market) and the official public registration fee.<\/p>\n<p style=\"margin-bottom: 1.25em;\">Registration fees are regulated by Ordinance no. 138-H\/2021 and vary depending on property typology (for residential units) or useful floor area (for commercial and service spaces).<\/p>\n<div style=\"background-color: #f8f9fa; border: 1px solid #e9ecef; border-left: 4px solid #111; padding: 1.25em; margin: 1.5em 0;\">\n<p style=\"margin-bottom: 0.5em; font-weight: bold;\">Recommended Article:<\/p>\n<p style=\"margin-bottom: 0;\">To consult the updated registration fee schedule and understand all cost breakdowns, read our dedicated article on <a href=\"https:\/\/mjarc.com\/en\/adene-fees-energy-certification\/\">ADENE fees and energy performance certificate costs<\/a>.<\/p>\n<\/div>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">Documents required for the process<\/h2>\n<p style=\"margin-bottom: 1.25em;\">To streamline issuance and ensure an accurate rating, the property owner should provide the expert with the following documentation:<\/p>\n<ul style=\"margin-bottom: 1.25em;\">\n<li>\n<p style=\"margin-bottom: 0.5em;\">Tax Property Card (<em>Caderneta Predial Urbana<\/em>) and Land Registry Certificate (<em>Certid\u00e3o do Registo Predial<\/em>);<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Updated architectural floor plans of the property;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Housing Technical File (<em>Ficha T\u00e9cnica da Habita\u00e7\u00e3o<\/em>, where applicable);<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Previously issued energy performance certificates;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Technical data sheets for heating, cooling, ventilation, and domestic hot water (DHW) systems;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Project drawings, technical specifications, or as-built documentation.<\/p>\n<\/li>\n<\/ul>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">Energy performance certificates in rehabilitation projects<\/h2>\n<p style=\"margin-bottom: 1.25em;\">In renovation works, an energy performance certificate moves beyond being a bureaucratic step and becomes a foundational roadmap for the design project. The report highlights critical shortcomings such as:<\/p>\n<ul style=\"margin-bottom: 1.25em;\">\n<li>\n<p style=\"margin-bottom: 0.5em;\">Missing or insufficient thermal insulation in walls and roofs;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Low-performance window assemblies and significant thermal bridges;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Obsolete and inefficient HVAC and hot water systems;<\/p>\n<\/li>\n<li>\n<p style=\"margin-bottom: 0.5em;\">Uncontrolled air infiltration or inadequate ventilation balance.<\/p>\n<\/li>\n<\/ul>\n<p style=\"margin-bottom: 1.25em;\">However, energy diagnostic findings must be integrated with a holistic architectural vision. Rehabilitation achieves its full potential when energy efficiency is addressed alongside spatial reorganization, natural lighting, heritage preservation, and sustainable materials.<\/p>\n<p style=\"margin-bottom: 1.25em;\">For buildings located within historic city centers, energy-focused renovations can grant access to valuable tax incentives. Read our specialized article on <a href=\"https:\/\/mjarc.com\/en\/zona_aru_e_oru\/\">ARU and ORU urban rehabilitation zones and tax benefits in Portugal<\/a>.<\/p>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">MJARC Arquitetos&#8217; vision for passive design efficiency<\/h2>\n<p style=\"margin-bottom: 1.25em;\">A building&#8217;s energy efficiency is not solved merely by adding technology or replacing air conditioning units. Many of the most decisive efficiency choices are made during the initial architectural design phase.<\/p>\n<p style=\"margin-bottom: 1.25em;\">Passive strategies\u2014such as optimal site orientation, winter solar gain, summer solar shading, cross ventilation, and high thermal mass materials\u2014substantially reduce the need for active mechanical energy consumption.<\/p>\n<p style=\"margin-bottom: 1.25em;\">At MJARC Arquitetos, we embed certification principles into the <a href=\"https:\/\/mjarc.com\/en\/preliminary-program-and-preliminary-study-architecture\/\">schematic design phase in architecture<\/a>, designing sustainable buildings focused on long-term comfort, durability, and respect for site identity.<\/p>\n<div style=\"background-color: #e9ecef; border-radius: 4px; padding: 1.25em; margin: 2em 0; text-align: center;\">\n<h3 style=\"margin-top: 0; margin-bottom: 0.5em;\">Planning to buy, sell, or renovate property in Portugal?<\/h3>\n<p style=\"margin-bottom: 1em;\">The team at MJARC Arquitetos assists property owners and developers with technical building analyses, integrating conscious architectural solutions with high energy performance.<\/p>\n<p><a style=\"background-color: #111; color: #fff; padding: 10px 20px; text-decoration: none; font-weight: bold; border-radius: 3px; display: inline-block;\" href=\"https:\/\/mjarc.com\/en\/contacts\/\">Contact Our Team<\/a><\/p>\n<\/div>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">Frequently asked questions about energy performance certificates<\/h2>\n<ul style=\"margin-bottom: 1.25em;\">\n<li style=\"margin-bottom: 0.75em;\"><strong>What is a property&#8217;s energy class rating?<\/strong> It is an alphabetical scale (from A+ to F) indicating a building&#8217;s energy efficiency level, with A+ representing superior performance and F representing low efficiency.<\/li>\n<li style=\"margin-bottom: 0.75em;\"><strong>Who is legally authorized to issue an energy performance certificate?<\/strong> The document is issued exclusively by a Qualified Expert credentialed under the Building Energy Certification System (SCE).<\/li>\n<li style=\"margin-bottom: 0.75em;\"><strong>Does ADENE perform property inspections?<\/strong> No. ADENE is the national system administrator. Inspections and assessments are conducted on-site by independent qualified experts.<\/li>\n<li style=\"margin-bottom: 0.75em;\"><strong>How long is an energy performance certificate valid?<\/strong> As a general rule, energy performance certificates for residential properties are legally valid for 10 years from the date of issuance.<\/li>\n<li style=\"margin-bottom: 0.75em;\"><strong>Is a certificate mandatory before advertising a property for sale?<\/strong> Yes. Portuguese law mandates including the building&#8217;s energy class rating in all commercial sales or rental advertisements.<\/li>\n<li style=\"margin-bottom: 0.75em;\"><strong>Does an energy performance certificate replace an architectural project?<\/strong> No. The certificate assesses and diagnoses thermal performance, whereas an architectural project conceives the spatial, structural, and conceptual design of the building.<\/li>\n<\/ul>\n<h2 style=\"margin-top: 1.8em; margin-bottom: 0.8em;\">References and legal framework<\/h2>\n<ul style=\"margin-bottom: 1.25em;\">\n<li style=\"margin-bottom: 0.5em;\">Decree-Law no. 101-D\/2020 \u2014 <em>Legal Regime of the Building Energy Certification System (SCE)<\/em>.<\/li>\n<li style=\"margin-bottom: 0.5em;\">Ordinance no. 138-H\/2021 \u2014 <em>Registration fee schedule for energy certificates on the SCE Portal<\/em>.<\/li>\n<li style=\"margin-bottom: 0.5em;\">Directorate-General for Energy and Geology (DGEG) \u2014 <em>Technical manuals and SCE guidelines<\/em>.<\/li>\n<li style=\"margin-bottom: 0.5em;\">ADENE \/ SCE Portal \u2014 <em>Official directory of technicians and informative guides<\/em>.<\/li>\n<\/ul>\n<p style=\"font-size: 9pt; color: #666; margin-top: 1em;\"><em>Note: The content of this article is for general informational purposes only and does not replace consultation with applicable legislation, the official SCE Portal, or technical advice provided by credentialed Qualified Experts.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An energy performance certificate is the official document that evaluates a property&#8217;s energy performance and assigns it an energy rating on a scale that clearly indicates how efficient or inefficient the building is. In Portugal, this certificate is mandatory in various situations, including property sales, leases, new construction, and specific urban rehabilitation projects. Far more [&hellip;]<\/p>\n<p class=\"read-more\"><a class=\"button\" href=\"https:\/\/mjarc.com\/en\/energy-certificates-adene-experts\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":16781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[35],"tags":[375,376,377,394,395],"class_list":["post-4878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eficiencia-en","tag-certification-energy","tag-certified-energy","tag-adene-en","tag-energy-certification","tag-energy-certificates"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Energy Certificate: ADENE Experts &amp; How to Get It<\/title>\n<meta name=\"description\" content=\"Learn what Energy Performance Certificates are, when they are mandatory, how much they cost, and how to obtain one. 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