Sustainable Infrastructure. Simplified.

ABREN works with investors and developers to stimulate capital flows into critical funding gaps in order to achieve appropriate risk adjusted returns and transform the world.  Examples of work include:

  • Sustainable Infrastructure - renewable energy, water management, waste reduction and reuse, sustainable agriculture, food security, housing and the built environment
  • Structured Finance - achieving appropriate risk adjusted returns at each level of the capital stack through blended finance, credit enhancement and risk mitigation.
  • US Emerging Markets - building local capital resilience in underserved communities, and supporting new technologies through early proofs of concept, pilot projects and commercialization 
  • Global Emerging Markets - providing project, corporate and development expertise in Latin America, Africa, South-East Asia, and the Middle East

To protect our future, we must shift our investment approach to embrace long-term sustainable solutions that deliver long term economic and financial prosperity.  The current extractive economy, which is free from regulations that protect environmental externalities and providing minimal social needs, has led to increasing income inequality, environmental destruction and an uncertain future for billions of people.  The UN Conference on Trade and Development estimated that between $5 and $7 trillion are needed to achieve the Sustainable Development Goals, with a $2.5 trillion funding gap in developing countries.


ABREN expands client participation in this market by streamlining investment due diligence, project structuring and financing strategies in order to access high impact markets, while achieving appropriate risk adjusted returns for investors.   


Women's Circle

Impact isn’t an asset class, it’s a way of life. 

                   We challenge ourselves every day to ask:


• How does our work mitigate climate change and restore ecosystems?

• Are risk adjusted financial returns for investors aligned?

• How are we building more connected resilient    

  communities of families earning meaningful livelihoods? 

• How do our programs and management honor integrity,

  humanity and justice?



• Environmentally regenerative or neutral 

• Promotes dignified livelihoods and shared prosperity

• Competitive risk adjusted returns 

• Distributed solutions diversify portfolio risk, create jobs, and reduce burdens on centralized infrastructure 

Abren focuses on Sustainable Infrastructure that transforms ecosystems and builds resilient communities and economies, while creating prosperity for investors and stakeholders.  Infrastructure projects address renewable energy, food and agriculture, water efficiency and management, waste reduction and recovery, and the built environment.



Karin Berardo, Founder


I have worked on sustainability for over 30 years, from developing sustainable agriculture and forestry policy in the Brazilian Amazon, to expanding affordable housing in the US and Africa, to leading renewable energy financing innovations on 5 continents.  Developing and financing projects that balance the needs of people, the environment and capital requires care and insight, and is essential to transform the world.  We each have a role to play - investors, developers, entrepreneurs and community members - to build a vibrant and resilient future.


In my asset management and development work, I've helped raise over $1 billion to finance renewable energy, affordable housing and real estate, water, waste and food projects around the world.  This includes helping to establish the first commercial solar programs in Thailand, the Philippines, the Dutch Antilles, and Rwanda; and the first workforce housing financing facilities in South Africa.  I work with investors and corporations to embed Environmental, Social and Governance (ESG), and Sustainable Development Goals (SDGs) into business planning, reporting, product offerings and investment criteria.  I've realized this work with ABREN clients, and at Fannie Mae, Stumpf Energy, Exyte Energy, CleanPath Ventures, Fotowatio, MuniMae and Accenture.  I received my MBA, MPP and BA from the University of Chicago.