We are experts in the finance, economics, law, and policy of infrastructure, natural resources and social service provision. We are passionate about finding solutions to the world’s most complex infrastructure problems in those fields, knowing that in doing so we can make the world a better place.

Founded in 1980 by Roland Leroy in Paris, Castalia was built from the start around innovative thinking on the organization of public services. Our portfolio of work speaks for itself. Over the past 4 decades we have pioneered public private partnerships in infrastructure on a global scale, we developed the framework that will help utilities to turn themselves around, and we are now redefining the fiscal management of infrastructure.

Since 1980 we have grown in staff numbers and global presence. We have over 50 members of staff, and offices in: Washington DC, USA; Auckland, New Zealand; Wellington, New Zealand; Sydney, Australia; Bogotá, Colombia; and Paris, France.

Castalia is the trusted advisor of corporations, utilities, governments, international agencies and infrastructure investors around the world. We solve complex, strategic assignments and deliver sustainable, measurable results.