Recent years have seen a marked increase in cooperation between the public and private sectors in order to develop and operate municipal infrastructure and SME development. Such Public-Private Partnership (PPP) arrangements are usually driven by limitations in public funds to cover investment needs but also by efforts to increase the quality and efficiency of public services. Nevertheless, the potential of PPPs remains often unexploited, due to a lack of awareness among public sector officials, insufficient project development, or limited implementation and management skills. Objectives The overall objective of the operation INTERCO-PPP ("Interregional co-operation for exchange of experiences and knowledge concerning Public – Private Partnerships") is to provide local authorities with the capacity to assess, design and implement PPPs in their fields of activity (e.g. energy, technical infrastructure, SME development). More specifically, the operation aims to identify the benefit of PPPs for certain types of projects and to develop strategies and procedures for planning and implementation as well as for establishing local or/and interregional alliances. Results The operation results in familiarizing regional and local authorities in the partner regions with the PPP concept. Improved PPPs in the partner regions can generate significant benefits for regional development, including accelerated provision and improved management of public infrastructure, generation of additional revenues and reduction of public expenditures, better allocation of risks and potential improvement of service quality. Activities include research of existing approaches, and the exchange of experience and transfer of know-how. Partners implement case studies for selected sectors to try new approaches and communicate results based on practical examples. Partners also present and discuss PPP structures and important issues such as national and EU regulatory frameworks through interregional workshops and conferences and communicate lessons learned to not participating regions.