ENEA is one of the largest scientific and technological state-owned Italian institutions with a specific mission in applied research activities, technology transfer and dissemination of innovation. 

Based in Prague, Czech Republic is one of the leading consultancy companies providing assistance mainly in the field of energy efficiency, renewable energy and environmental issues, including Energy Performance Contracting consultancy (EPC). Enviros is active in the Czech Republic, Central and Eastern Europe, but also in other parts of the world.

Research and Innovation Centre Pro-Akademia is a Polish non-profit private research organisation active in the field of interdisciplinary research, employing over 200 experts in the field of social sciences and engineering. Pro-Akademia's main field of expertise is sustainable energy and energy efficiency.

Zala County Foundation for Enterprise Promotion (ZMVA), established by the Zala County Government, is a non-profit organization promoting economic development of Zala County, improvement of the national and international economic relations and supporting the establishment and growth of SMEs. 

Local Energy Agency Spodnje Podravje is energy manager for the Spodnje Podravje municipalities. Its aim is to enhance the development of sustainable energy in the Spodnje Podravje region through the realization of projects, studies, documents.   

City of Udine, located in the middle of the Friuli-Venezia Giulia region, with population over 99 thousand, in the last years has been a forerunner on sustainability issues, committed to implementation of retrofit actions on its own buildings and improvement of local regulations with energy efficiency and sustainability aspects.

City of Warsaw is the capital and the largest city of Poland. Warsaw has a population of 1.7 million, around 3 million live within the agglomeration. Warsaw has signed the Covenant of Mayors in 2009 and submitted SEAP in 2011, where it has committed to the target of 20% reduction of CO₂ emissions and 20% reduction of final energy use by 2020 compared to 2007.

The Community of Slovenska Bistrica is situated in the north-eastern Slovenia and is one of the biggest communities in Slovenia with area  260,1 km² and over 25.000 inhabitants. Local energy plans  aim at decreasing energy consumption in public buildings of 20% till 2020, and acceleration of renewables (RES) at local level.

The city of Split is a local government organization responsible for managing economic development, communal, social and transport infrastructure and implement various political, social and development policies. It has 19 departments employing 455 persons with annual budget of approximately 100 million euros.

HEP ESCO is a part of the HEP Group, the biggest national utility, owned by the government, and it is an energy service-providing company implementing ESCO projects. HEP ESCO is also active in development and research and in non-profit based projects developing innovative energy services, energy efficiency measures as well as contracting and financing.

The essential task of Graz Energy Agency is to promote energy efficiency and renewable energies with a special emphasis on innovative energy service models, like Energy Performance Contracting. GEA is the main institution for implementing municipal energy policies of the City of Graz and cooperates with cities all over Austria.