About Us

Proven track-record in sustainable transformations

Raison is a specialised sustainability and ESG consultancy that works with investors and fund managers such as private equity firms, venture capital, institutional investors, private foundations, and other active owners to drive sustainable transformations at both fund and asset level.

Our advisory services cover the full investment cycle, and they are shaped by our extensive experience in leading and supporting transformational change in small-cap, mid-cap and large-cap companies. We have hands-on experience from delivering sustainable transformation strategies and programs across multiple industries, including in transport and logistics, health care and life-sciences, fashion and consumer goods, light manufacturing, financial services, investment firms, and energy.

Raison is founded by two Partners – Mette Dalgliesh Olsen and Peder Michael Pruzan-Jørgensen. We bring a combined +35 years of international strategy and hands-on experience as sustainability and ESG strategy consultants and in-house sustainability executives.


ESG Due Diligence completed


years combined experience with sustainable business transformations

$90 billion

Assets under Manage (AUM) of current client base

Partner Bios


Mette Dalgliesh Olsen
Mette has over 15 years experience in the corporate sustainability and responsibility field. Prior to forming Raison Consulting, she has a proven track-record for leading sustainable transformation programs in large companies such as Maersk and as Head of Sustainability for Chr. Hansen, helping these companies manage their ‘full suite’ of sustainability risks and opportunities. Since 2015, Mette has served as an independent advisor to companies and investment firms, focusing on sustainability strategy development and impact measurement and management.


Peder Michael Pruzan-Jørgensen
For more than two decades, Peder Michael Pruzan-Jørgensen has worked with world leading companies and investment firms to build forward-looking sustainability strategies to deliver business value and impact. He is an experienced sustainability executive with a decade of leadership experience in the executive committee of BSR, the world’s foremost business sustainability membership organisation. Throughout his career he has served on international companies’ sustainability advisory boards as well as worked with international development organisations to harness the resources of the private sector to support the realisation of the UN Sustainable Development Goals.

Access to a wide pool of deep-pocket ESG expertise

We harness a network of experts and partner organisations across the world that enable us to deliver leading solutions to our clients’ complex sustainability and ESG topics such as climate change, biodiversity, diversity and inclusion, human rights, supply chain due diligence, business ethics, and governance.


What are our clients saying about us?

“In the process of designing our fund, Raison was instrumental in helping us figure out how to make Article 9 operational, balancing pragmatism and compliance with the spirit of SFDR. We now work with Raison on all our impact due diligence projects – they are quick to get on the ball and work independently, while understanding and respecting the need to control time spend. As I see as more and more funds operating in this space, it is clear to me that Raison Consulting is absolutely best-in-class.”

“Raison supported Stiesdal in carrying out our first double materiality assessment and in articulating our sustainability ambitions and roadmap. Raison has been instrumental in structuring and documenting our sustainability efforts in line with the latest legislation, while keeping a keen eye on proportionality and translating complex legislation into actionable plans. We recommend Raison for their vast knowledge of the sustainability legislative landscape, complemented by a pragmatic approach to enabling compliance and impact.”

“Working with Raison on our ESG initiative has been a transformative experience for us. Their expertise and dedication significantly helped us to align our business with best practices and industry standards.”