Our impact
Investment approach
Meridiam is an independent investment Benefit Corporation and an asset manager, a leading specialist in sustainable greenfield infrastructure globally and in sustainable SMEs.
Sustainability as a business philosophy and strategy
The firm was founded in 2005 on the principle that infrastructure investment should be long-term, responsible, and sustainable, with clear benefits to local communities. And, on the belief that the proper qualification of Environment, Social and Governance (“ESG”) and impact is essential to effective stakeholder management.
Meridiam has since developed robust ESG principles to include not only relevant global standards, such as the UN Principles of Responsible Investment (“UN PRI”) and the Equator Principles, but also to consider the ESG criteria of leading Development Finance Institutions (“DFIs”) (including the European Investment Bank (“EIB”), European Bank for Reconstruction and Development (“EBRD”) and the International Finance Corporation (“IFC”) Standards). These principles form the core of Meridiam’s sustainable development charter and are integrated throughout our investment and portfolio management process.
Our track record
By acquiring the status of certified benefit corporation, Meridiam went further in formalizing its sustainability strategy. Our mission “delivering sustainable infrastructure that improves the quality of people’s lives” is now enshrined in its by-laws, confirming its commitment to achieving the United Nations Sustainable Development Goals (“UN SDGs” or “SDGs”) and a rigorous evaluation of the impact of our investments.
Our five pillars
Our five strategic pillars are:
- ”Deliver resilient infrastructure and develop resilient cities”
- ”Accelerate energy transition”
- ”Avoid & reduce emissions”
- ”Promote good work conditions, inclusion, diversity & gender equality”
- ”Protect & enhance biodiversity”
These pillars shape our organisation and our investment approach. They align with the UN Sustainable Development Goals and with our mission to improve the quality of people’s lives. What stands us apart is our pure focus on creating public infrastructure with a positive economic, social and environmental impact across Europe, Africa and the Americas.
Different countries and regions have a wide variety of social and environmental priorities. And every infrastructure project serves a different purpose – from the provision of quality healthcare to efficient mass transportation, or access to reliable, renewable energy. Each needs an individual approach linked to an overarching strategy.
Our pillars help turn our mission into deliverable goals, enabling us to target our initiatives and measure our firm’s impact on a global basis. They keep our sustainability strategy focused and help us identify ways to further improve our assets and our organisation
Meridiam’s Mission Committee meets at least three times a year to review and discuss Meridiam’s achievements, challenges, and new initiatives aligned with the Mission Objectives.


In 2018 Meridiam created SIMPL. – ‘Sustainability Impact Measurement Platform’ (SIMPL.®), a Software as a Service (SaaS) tool, allows us to collect ESG information provided by all assets, and to track and monitor their impact against ESG targets and SDGs. Using data collected with SIMPL.®, we monitor our performance on all other SDG-related mission objectives. In 2026, SIMPL.® joined the Zei Group, a leading player in ESG/CSR and carbon software solutions, adding new benchmark functionalities.
Our delivery
Over 20-year track record of delivering robust, long-term and sustainable infrastructure
Meridiam invested c. EUR 100 billion since inception and currently manages over 130 essential public infrastructure that responds to the critical needs of communities, in three core sectors: sustainable mobility, innovative low carbon solution, critical public services (as of December 2025).
Meridiam raised several funds, with complementary approaches :
- Sustainable and resilient Infrastructure: MIE Core Infrastructure Fund (MIE CIF), Meridiam Infrastructure SICAR, Meridiam Infrastructure Europe III (MIE III), Meridiam Sustainable Infrastructure Europe IV (MSIE IV), Meridiam Transition (MT), Meridiam Sustainable Water and Waste Fund (MSWWF), The Urban Resilience Fund A and B (TURF A and B), Meridiam Infrastructure Africa Fund (MIAF), Meridiam Infrastructure Africa Fund II (MIAF II), Meridiam Infrastructure North America II (MINA II), Meridiam Infrastructure North America III (MINA III), Meridiam Infrastructure North America IV (MINA IV), managed accounts and co-investments.
- Sustainable SMEs: Green Impact Growth Fund (GIGF)
The portfolio represents in total c. EUR24 billion of Assets Under Management (AUM as of December 2025, excluding SUEZ).
Our expertise
We have deep development expertise across a stable, experienced and local team.
Meridiam’s team, which comprises c. 400 people (as at December 2025), has extensive experience in developing and managing infrastructure assets, as well as supporting the scale-up of impactful SMEs.
The majority of senior management and the investment team has a background in engineering. It reflects Meridiam’s investment philosophy of delivering value to its stakeholders primarily through the creation of new and sustainable infrastructure as the key driver of Meridiam’s value creation and portfolio management strategy.