{"id":16922,"date":"2026-07-13T10:50:55","date_gmt":"2026-07-13T08:50:55","guid":{"rendered":"https:\/\/www.incide.it\/criteri-cam-in-edilizia\/"},"modified":"2026-07-15T10:11:40","modified_gmt":"2026-07-15T08:11:40","slug":"minimum-environmental-criteria","status":"publish","type":"post","link":"https:\/\/www.incide.it\/en\/minimum-environmental-criteria\/","title":{"rendered":"Minimum Environmental Criteria (MEC) in construction: how the design of public works is changing"},"content":{"rendered":"

The Minimum Environmental Criteria (MEC)<\/strong> are now one of the main tools governing the design and construction of public works in Italy. Their application has a direct impact on design choices, materials, building services technology and site organisation. The MEC have been mandatory in public procurement for several years now, but have often been viewed as yet another burdensome requirement placed on designers, with additional costs placing a strain on the limited resources of contracting authorities. Conversely, they introduce a revolutionary concept<\/strong>: rather than focusing all efforts on the building itself \u2013 which must be constructed one way or another \u2013 they encourage everyone to engage in a profound reflection on the significance of every construction project.<\/p>\n

At the same time, the European DNSH (Do No Significant Harm)<\/strong> has further strengthened the approach to sustainability, particularly in projects funded by the Italian PNRR<\/strong> and public funds. The combined effect of MEC and DNSH has brought about a structural shift in the way public works are conceived: no longer merely technical and economic performance, but a systematic assessment of environmental impact throughout the entire life cycle.<\/p>\n

What are the Minimum Environmental Criteria (MEC)<\/span><\/h2>\n

MECs are environmental requirements defined by the Ministry of the Environment and Energy Security<\/strong> and mandatory<\/strong> in public procurement. They set out the characteristics that buildings, materials, installations, construction sites and supplies must possess in order to reduce their environmental impact throughout the entire life cycle of the project.<\/p>\n

The main Minimum Environmental Criteria currently in force extend beyond the construction sector and cover numerous areas of the public administration, for example:<\/p>\n

    \n
  • construction;<\/li>\n
  • public lighting;<\/li>\n
  • indoor lighting;<\/li>\n
  • interior furnishings;<\/li>\n
  • street furniture;<\/li>\n
  • management of public green spaces;<\/li>\n
  • roads;<\/li>\n
  • energy services;<\/li>\n
  • waste;<\/li>\n
  • vehicles;<\/li>\n
  • catering.<\/li>\n<\/ul>\n

    Their objective<\/strong> is to guide the design, construction and management of buildings towards:<\/p>\n

      \n
    • reducing environmental impact;<\/li>\n
    • the efficient use of resources;<\/li>\n
    • increasing the durability of structures;<\/li>\n
    • the incorporation of recycled and recyclable materials;<\/li>\n
    • the reduction of emissions throughout the life cycle.<\/li>\n<\/ul>\n

      The MECs apply to all stages of the project: from design through to decommissioning, including site management and maintenance.<\/p>\n

      This approach introduces a framework for extended assessment of the project<\/strong>, in which every technical decision is evaluated in terms of its overall impact.<\/p>\n

      MEC in the construction sector: what they entail<\/span><\/h2>\n

      In the construction sector, MECs define the environmental requirements to be met when awarding design services, works and integrated contracts relating to public building projects. The requirements do not apply exclusively to the materials used, but cover the entire construction process, from design through to the completion of the works.<\/p>\n

      The aspects covered include:<\/p>\n

        \n
      • the environmental quality of the site;<\/li>\n
      • the reduction of energy and water consumption;<\/li>\n
      • the selection of materials with verifiable sustainability characteristics;<\/li>\n
      • site management;<\/li>\n
      • waste reduction;<\/li>\n
      • selective demolition;<\/li>\n
      • occupant comfort;<\/li>\n
      • the procedures for verifying compliance throughout all stages of the project.<\/li>\n<\/ul>\n

        Who is involved in the implementation of MECs<\/span><\/h2>\n

        The application of MECs requires the coordinated involvement of all stakeholders in the construction supply chain<\/strong>. Responsibility does not lie solely with the designer, but extends to every party involved in the contract.<\/p>\n

        The contracting authority and the Single Project Manager (RUP)<\/strong> define the environmental requirements to be included in the tender documentation. Designers are required to develop solutions that comply with the specified criteria, preparing the necessary technical documentation to demonstrate such compliance.<\/p>\n

        During the execution of the works, contractors, site managers, suppliers and manufacturers must ensure that materials, workmanship and procedures are consistent with the provisions of the design and the tender specifications, making all the documentation required for verification available.<\/p>\n

        School Complex in Villa Ferro – Fidenza | Italy<\/a><\/p><\/blockquote>\n