Directive (EU) 2024/1275, known as EPBD 2024 or the recast EPBD, establishes 29 May 2026 as the deadline by which all EU Member States must complete transposition into national law. According to the European Commission Directorate for Energy, failure to transpose exposes Member States to infringement proceedings. The directive, which according to EUR-Lex was published in the Official Journal of the EU on 8 May 2024 and entered into force on 28 May 2024, repeals and replaces the previous versions of the EPBD (Directive 2010/31/EU and its 2018 amendments). Its central objective is full decarbonisation of the EU built environment by 2050, articulated through concrete obligations on energy performance certification, renovation passports, smart readiness, solar energy infrastructure, and whole-life cycle analysis. | The recast directive does not operate in isolation. Across EU Member States, it must be integrated with existing national frameworks, building codes, and thermal installation regulations. According to BUILD UP, the European Commission platform for energy efficiency in buildings, an analysis of implementation progress published around the May 2026 transposition deadline indicated that some Member States had reached approximately 60 per cent adaptation. This means that a significant portion of the technical and administrative obligations derived from the directive still required specific regulatory development or updates to existing national instruments at that point. This implementation gap has direct practical consequences for building owners and technical teams: energy performance certification procedures, minimum performance requirements, and building information systems may all be subject to regulatory modifications in the months ahead. | One of the most immediate changes introduced by EPBD 2024 concerns energy performance certificates (EPCs). According to BUILD UP, from 29 May 2026, all EPCs must use the mandatory A-to-G scale and the harmonised template defined in Annex V of the directive. This standardised format serves two purposes: it enables comparability between real estate assets across the EU, and it provides more actionable information on recommended improvement measures. The directive adds requirements beyond the existing scale, including information on embodied global warming potential, the smart readiness indicator (SRI) for grid-readiness, and integration with the renovation passport. These elements require updates to inspection procedures, calculation methodologies, and certification registries managed at regional level in countries with devolved administrative structures. For asset-intensive typologies such as hospital estates and educational campuses, where buildings are frequently large energy consumers with complex HVAC systems, accurate modelling of the updated EPC indicators is critical to meeting deadlines and avoiding administrative penalties. | The renovation passport is one of the most substantive innovations in EPBD 2024. According to MITECO, the directive requires Member States to establish a renovation passport scheme based on Annex VIII of the directive, with a deadline of 29 May 2026. Unlike a standard EPC, which captures the current energy state of a building, a renovation passport is a personalised document that sets out a roadmap for staged deep renovation of a specific building, with the goal of reaching the highest possible energy performance, ideally near-zero energy building (NZEB) level or above. Each stage of the roadmap includes estimated energy savings, approximate costs, and a recommended time priority. Its technical value lies in enabling phased investment planning, minimising the risk of stranded assets, and maximising access to public funding mechanisms such as the Recovery and Resilience Facility. From a methodological standpoint, a rigorous renovation passport requires a detailed energy model of the existing building, scenario analysis for improvement pathways, estimation of both embodied and operational carbon emissions, and coordination with regional certification registries. Digital twin engineering tools allow that baseline model to be constructed using real building data, enabling comparative simulations across different renovation routes before any capital commitment is made. | On solar energy, EPBD 2024 establishes binding obligations for new construction. According to MITECO, all new public and non-residential buildings with a usable floor area exceeding 250 square metres must have solar installations in place before 31 December 2026, where technically and economically feasible. This obligation is progressively extended to other building categories in subsequent phases. This requirement overlaps with provisions already contained in national building energy codes, which in several Member States already set minimum solar contribution requirements. EPBD 2024 raises that threshold and makes it binding within stricter timeframes, treating solar energy as default infrastructure rather than an optional measure. For projects in the energy generation and distribution sector, this convergence between building regulation and energy regulation creates a technically more complex working environment requiring coordination across MEP engineering, structural design, and planning consent disciplines. | The regulatory calendar of EPBD 2024 extends well beyond May 2026. According to BUILD UP, the first binding life cycle assessment (LCA) requirements will begin to apply to large buildings from 2028, extending to all new buildings by 2030. In the context of the directive, LCA measures the global warming potential across the full life cycle of a building, including construction materials, the operational phase, and demolition, expressed in kilograms of CO2 equivalent per square metre per year. This means that projects currently in design for large floor areas must already incorporate LCA methodologies into their technical documentation in order to be compliant when those requirements come into force. Integration of LCA within BIM models, following information management protocols such as those described in ISO 19650, is the most efficient means of ensuring that documentation is coherent, traceable, and updatable throughout the life of the asset. This is particularly relevant for industrial and manufacturing facilities, where buildings combine high technical loads with floor areas that frequently exceed the thresholds at which the most demanding obligations apply. According to the European Commission Directorate for Energy, Member States are also required to submit their final national building renovation plans by 31 December 2026, quantifying the existing building stock, decade-by-decade renovation targets, and associated financing measures. | The practical implications of this regulatory framework are significant for building owners and engineering teams operating across the EU. EPCs issued before May 2026 may require review if they do not comply with the Annex V format, particularly in the context of real estate transactions occurring after that date. Owners of buildings with renovation plans should assess whether a renovation passport represents a more appropriate instrument than isolated one-off interventions, given that the passport may be a prerequisite for access to specific public financing lines. New-build projects with floor areas exceeding 250 square metres in public or non-residential use must assess the technical and economic feasibility of solar installation from the earliest design stage, with exceptions properly documented where applicable. Engineering teams working on large-scale buildings should integrate LCA procedures into their workflows now in order to be prepared for the 2028 requirements. Energy audits conducted under existing national regulations transposing the Energy Efficiency Directive must be aligned with the new EPBD 2024 indicators, in particular the global warming potential metric and the smart readiness indicator (SRI). Across all of these obligations, the common technical thread is the need for structured, auditable, and updatable building information that can serve multiple regulatory purposes simultaneously, from certification through to renovation planning and whole-life carbon reporting.