REGEA is a regional energy agency and recognized a center of knowledge and excellence with references and projects throughout the European Union, it was established in 2008 as a joint venture of the City of Zagreb and the Karlovac, Krapina-Zagorje and Zagreb counties and as such REGEA is in their full ownership.

The scope of work includes:
Support in the development and implementation of national, regional, and local investment projects in the field of energy (eg. energy renovation and construction of buildings)
Development of long-term strategies, energy efficiency programs and action plans (eg. national strategies, SMART City strategies, SEAPs and SECAPs…)
Development of innovative financing mechanisms for energy projects such as the Energy Performance Contract – ESCO model and Public-Private Partnership – PPP
Preparation of study bases, technical calculations and analyzes, feasibility and pre-feasibility studies, business plans and other financial analyzes
Construction project management, professional and technical supervision of energy audits
Energy certification education and promotion of best practices
Production of educational publications, implementation of promotional and crowdfunding campaigns.

References
Buildings – managing investments / projects for the construction or energy renovation of buildings and the installation of renewable energy systems
Karlovac County, 2013-2020
21 school buildings, total investment HRK 43.11 million
5 dispensaries and health centers, total investment HRK 7.77 million
1 administrative building, total investment HRK 5.8 million
Krapina-Zagorje County, 2012-2020
25 school buildings, total investment HRK 85.95 million
1 administrative building, total investment HRK 5.8 million
Energy Center Bračak, total investment HRK 24.0 million
Zagreb County, 2012-2020
14 school buildings, total investment HRK 112.7 million
1 sports facility building, total investment amounting to HRK 0.4 million
1 bicycle lane, total investment amounting to HRK 2.7 million
City of Zagreb, 2018 – 2019
Pavilion 12 of the Zagreb Fair, total investment HRK 61 million
City of Donja Stubica, 2018-2020
5 centers for social gatherings, total investment HRK 3.9 million
City of Jastrebarsko, 2018-2019
1 school building, total investment HRK 1.4 million
Municipality of Pokupsko, 2013-2015
Biomass heat plant, total investment amounting to HRK 12.0 million
City of Pregrada, 2019-2020
2 administrative buildings, total investment amounting to HRK 4.3 million
Football Club Pregrada’s building, total investment amounting to HRK 680,850.00
Municipality of Veliko Trgovišće, 2019 – 2020
1 administrative building, total investment HRK 698,724.88
Municipality of Zlatar Bistrica, 2019 – 2020
1 administrative building, total investment amounting to HRK 2.0 million
Municipality of Kraljevec na Sutli, 2019 – 2020
1 administrative building, total investment amounting to HRK 1.0 million
Zabok General Hospital, 2019 – 2020
Photovoltaic power plant, total investment HRK 2.4 million
EIB / ELENA RePubLEEc project (2018-2020) – modernization of public illumination in the City of Zagreb – value amounting to over HRK 260 million
EIB / ELENA NEWLIGHT project – modernization of public illumination in 57 municipalities and cities in the Zagreb and Krapina-Zagorje counties (2015-2018) – worth over HRK 130 million
For the Ministry of Construction and Physical Planning of the Republic of Croatia:
Energy renovation program for commercial non-residential buildings for the period from 2014 To 2020 with a detailed plan for energy renovation of commercial non-residential buildings for the period between 2014 and 2016,
started in July 2014
Long-term strategy to encourage investment in the renovation of the buildings, April 2014
Revision of the Long-Term Strategy for Encouraging Investments in the Reconstruction of the National Building Fund of the Republic of Croatia, May 2017
Energy renovation program for buildings that have the status of cultural property for the Ministry of Construction and Physical Planning, November 2019.
Over 25 Energy Sustainable Development Action Plans have been developed for Croatian cities signatories to the Covenant of Mayors – including the Covenant of Mayors (including the cities of Zagreb, Rijeka, Osijek…) and for the capitals of Southeast European countries – Skopje, Podgorica, Sarajevo and Tirana.
More than 35 strategic and implementation documents for regional self-government units in the field of energy efficiency have been prepared, all of which were made in accordance with the provisions of the Energy Efficiency Act.
Advisory services provided to the World Bank during the preparation of the study Croatia Energy Efficiency Assessment – analysis of national legislation and strategic documents, as well as of the institutional framework and the market for energy efficiency services focusing on the buildings used by the public sector., 2014.
Provision of consulting services to the European Bank for Reconstruction and Development (EBRD) – preparation of a Feasibility Study for the reconstruction of public lighting for the City of Prishtina (Kosovo) in partnership with the Berlin Energy Agency., 2015.
Encouraging 500-900 million HRK worth project investments through the Managenergy initiative with a total value of HRK 5.2 million, in the sustainable use of energy and the preparation of a wide-ranging energy transition at the local and regional level. 2018.-2020.
Intelligent Energy for Europe, 2011 – 2017
8 projects, total value amounting to HRK 91.9 million
IPA cross-border cooperation Slovenia – Croatia, 2013 – 2015
2 projects, total value amounting to HRK 7.4 million
Interreg IPA Croatia – Bosnia and Herzegovina – Montenegro 2017 – 2021
2 projects, total value amounting to HRK 13.8 million
Interreg MED, 2013 – 2021
4 projects, total value amounting to HRK 42.6 million
Interreg Central Europe, 2017 – 2021
5 projects, total value amounting to HRK 82.5 million
VISA Europe, 2016 – 2021
2 projects, total value amounting to HRK 19.7 million
Obzor 2020/2015 – 2021
14 projects, total value amounting to HRK 184.6 million
Concerto, 2007 – 2012
1 project, total value amounting to HRK 77.1 million
Phare CBC/INTERREG IIIA – New Adriatic Neighbourhood Programme, 2008 – 2009
1 project, total value amounting to HRK 1.3 million
IPA, Cross – border Cooperation Croatia – Bosnia and Herzegovina
1 project, total value amounting to HRK 1.2 million
Obzor2020
14 projects, total value amounting to HRK 184.6 million