Basic information about the project:

Location: Municipality of Hrvace, Split-Dalmatia County
Area covered by the project: ~ 12.5 ha
Connected power of the power plant: 10 MW
Two transformer stations of 6600 kVA
Nominal voltage at the point of connection: 35 kV, to the network of HEP-ODSa

Project description:

Solar energy represents one of the key and generally accepted renewable energy sources. Therefore, the construction of solar power plants (photovoltaic power plants) that convert sun energy into electricity represents important aspects of the energy sector development strategy of the Republic of Croatia. The main elements of a solar power plant are solar panels, inverters, a transformer, and a control and monitoring system. During the work life of the solar power plant, solar panels convert the radiated solar energy into DC electricity. The solar panels are connected in series (strings) to obtain the appropriate direct current voltage at the input to the inverter. An inverter converts direct current into alternating current of a specific voltage. The alternating current voltage is increased using a transformer to a higher voltage suitable for the transmission of electricity over longer distances and for connection to the power grid of the Republic of Croatia.

Enerkon participated in the project through the following activities:

• creation of a Conceptual design;
• consulting and technical advice during the preparation of studies (EZOP, EOTRP...);
• creation of a Basic design;
• preparation of the Main design;
• consulting and expert assistance to the investor when obtaining key documents and permits in the field of spatial planning and construction (Energy Approval, Location Permit, Building Permit...).

Project title: Increasing energy efficiency and the use of renewable energy sources in the companies DOK-ING d.o.o.
Investor: DOK-ING d.o.o.
Location: Zagreb, Croatia

Project description:

As part of the project in the company DOK-ING d.o.o. the heating and cooling system of the production facility was reconstructed, and a photovoltaic power plant and an elevator were installed. The project was co-financed based on a public call by the Ministry of Economy and Sustainable Development related to increasing energy efficiency and the use of renewable energy sources in manufacturing industries. All project activities were completed successfully, and all necessary certification and technical documentation was created, harmonized, and submitted. A technical inspection was carried out to obtain a use permit, in which a positive opinion of representatives of public law bodies and independent experts was obtained.

Enerkon is in this project with the company DOK-ING d.o.o. participated from the idea (end of 2020) to realization (half of 2023), which means that we did:

• all phases of design (development of the idea, creation of the conceptual solution and the main project and obtaining the necessary permits);
• active participation in the preparation of the project proposal as technical support to consultants for the preparation of projects; professional supervision during the execution of works;
• coordination in the phase of preparation of the necessary technical documentation after execution to obtain a permit for the permanent operation of the photovoltaic power plant and a use permit;
• consulting during the implementation of the entire project and active participation in the implementation of all project activities;

What does the implementation of this project mean for DOK-ING d.o.o.?

• increasing energy efficiency (through the rational use of energy through reduction of losses and application of newer and more efficient technologies and equipment);
• increasing independence in energy supply (production of electricity from renewable sources (photovoltaic power plant) to meet all needs, both for heating and cooling the space and for the production process itself);
• realization of significant financial benefits (reduction of energy costs); revitalization and modernization of the heating system and introduction of the cooling system in the entire production plant;
• creation of better working conditions for employees (installation of a cooling system) and the possibility of employment of persons reducing mobility (installation of elevators);