The statements in this Sustainability Report generally relate to the whole Implenia Group. However, the scope is naturally more limited for some of the reported topics. If data or statements relate only to individual divisions or countries, this is explicitly mentioned in the text and charts.
Reporting is carried out in line with the GRI Standards. The contents were compiled with the greatest care and were reviewed by the Sustainability Committee, but they have not been externally audited.
Implenia has continuously reported on sustainability topics on this web platform since 2012. Measurements are updated annually (current status: reporting year 2022).
Information about new projects and initiatives is continuously communicated under sustainability.implenia.com. The company makes a thorough revision of all content every two years. Readers thus always have an up-to-date picture of the Group’s sustainability efforts. For environmental reasons we do not produce a printed version.
Determining the material topics
Implenia’s Sustainability Department is responsible for the company’s global sustainability reporting. Working closely with the Sustainability Committee, relevant functions and divisions, it defined the main content of the strategy and reporting in accordance with the Group’s five sustainability priorities. The choice of subjects to include was also determined by a materiality analysis based on the Sustainable Development Goals, and by an event involving Implenia’s internal and external stakeholders. The GRI Reporting Framework informed the editing of the text, and all content was subject to final review and approval by the Group’s Sustainability Committee.
Principles of greenhouse gas reporting
GRI 2-4, 2-6
Reporting of greenhouse gas emissions accords with the international Greenhouse Gas Protocol Standard. Since 2020, the collection of CO2 data has covered all markets (Switzerland, Germany, Austria including Romania and Italy, France, Norway, Sweden).
Data is based on invoices, information from suppliers and partner companies (e.g. electricity providers and leasing partners) as well as Implenia’s own measurements at its production facilities.
In summer 2022, an updated methodology was used to recalculate our footprint for 2020, thus defining the baseline against which to measure our 2025 sustainability goals. The new method was also used to calculate the 2021 footprint, but it has not been applied to data from before the new baseline year of 2020.
The footprint for 2020 now includes all home markets and energy sources. The following emission factors were used uniformly: Scope 1 = Defra, Scope 2 = IEA (electricity) & GaBi (district heating). This resulted in overall higher emissions than the old methodology, which omitted France and some other sites and energy sources.
GRI 305-1, 305-2
Implenia calculates greenhouse gas emissions using the “operational control” approach. Emissions from all operations managed by Implenia are entirely attributed to the company regardless of its financial participation. Emissions from all leased and rented assets (properties, vehicles, machinery, etc.) are also treated as Scope 1 and 2 emissions accordingly.
Significant sustainability-related memberships and partnerships
Type of support
Öbu – Netzwerk für nachhaltiges Wirtschaften
Corporate membership and specialist partner
NNBS, Netzwerk Nachhaltiges Bauen Schweiz
Founding and funding member
WWF SEED - Next Generation Living
ETH Partnership Council
Industrial partner for creation of an assistant professorship for innovative and industrialised construction
Sustainable Switzerland Entrepreneurs Club
Compliance with external guidelines
Implenia generally focuses its activities on the following national and international guidelines, norms and standards:
European Convention on Human Rights (ECHR)
United Nations Sustainable Development Goals
Core conventions of the International Labour Organization (ILO)
ISO standards 9001, 14001, 27001, 45001
SIA norms in Switzerland
GRI content index
For the Content Index - Essentials Service, GRI Services reviewed that the GRI content index is clearly presented, in a manner consistent with the Standards, and that the references for disclosures 2-1 to 2-5, 3-1 and 3-2 are aligned with the appropriate sections in the body of the report.
Statement of use
Implenia AG has reported in accordance with the GRI Standards for the period January 1st 2022 to December 31st 2022.
GRI 1 used
GRI 1: Foundation 2021
Applicable GRI Sector Standard(s)
No sector standard available for construction and real estate yet