Energy in Croatia

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Dubrava Hydroelectric Power Plant Hidrocentrala Dubrava - zgrada.jpg
Dubrava Hydroelectric Power Plant

Energy in Croatia describes energy and electricity production, consumption and import in Croatia.

Contents

As of 2021, Croatia imported about 52.9% of the total energy consumed annually: 80% of its oil demand, 67% of its gas, 32.5% of its electricity and 100% of its coal needs. [1]

Croatia satisfies its electricity needs largely from hydro and thermal power plants, and partly from the Krško nuclear power plant, which is co-owned by Croatian and Slovenian state-owned power companies. Renewable energies account for approximately 28.5% of Croatia's energy mix. [1]

Electricity

Hrvatska elektroprivreda (HEP) is the national energy company charged with production, transmission and distribution of electricity.

Production

Energy production in Croatia Electric energy in Croatia.png
Energy production in Croatia

At the end of 2021, the total available power of power plants on the territory of the Republic of Croatia was 4,872.9 MW, of which 1,547.2 MW in thermal power plants, 2,200.5 MW in hydropower plants, 986.9 MW in wind power plants and 138.3 MW in solar power plants. For the needs of the electric power system of the Republic of Croatia, 348 MW from NPP Krško is also used (ie 50% of the total available power of the power plant in accordance with the ownership shares). [2]

The total production of electricity in the Republic of Croatia in 2022 was 14,220.5 GWh, whereby 63.7 percent (9,064.9 GWh) was produced from renewable energy sources, including large hydropower plants. In this percentage, large hydropower plants participated with 38.4 percent (5,454.2 GWh), and 25.4 percent (3,610.8 GWh) of electricity was produced from other renewable sources (wind energy, small hydropower plants, biomass, geothermal energy, biogas and photovoltaic systems). Domestic electricity production covered 75.2 percent (14,220.5 GWh) of electricity needs, which in 2022 amounted to 18,915.3 GWh. The import of electricity in 2022 amounted to 11,919.7 GWh, which is 63.0 percent of the total realized consumption. The export of electricity amounted to 7,224.9 GWh, which is 50.8 percent of the total domestic electricity production (14,220.5 GWh). [3]

Hydropower

Croatia has 28 hydropower plants of which 2 are reversible, 2 small size and 1 pumped storage. They are distributed in three production areas: North, West and South with one independent plant, and are HEP's most important source of renewable energy. [4]

Hydropower plants
NamePlumProduction capacity (MW)Commissioned
HE Varaždin Drava 94.6351975
HE Čakovec 77.441982
HE Dubrava 79.781989
HE Rijeka Rječina 36.801968
HE Vinodol area of Gorski Kotar 90.001952
CHE Fužine4.50/-6.501957
RHE Lepenica0.80/-1.201985
HE Zeleni Vir Kupa 1.701921
HE Senj Lika and Gacka 216.001965
HE Senj 2412.00planned
HE Sklope Lika 22.501970
HE Gojak Ogulinska Dobra and Zagorska Mrežnica 56.001954
HE Lešće Donja Dobra 42.292010
HE Ozalj 1 Kupa 3.541908
HE Ozalj 2 2.201952
RHE Velebit Zrmanja 276.00/-240.001984
HE Miljacka Krka 20.001906
MHE Krčić 0.3751988
HE Golubić 6.541981
HE Jaruga 7.201903
HE Peruća Cetina 60.001960
HE Orlovac Livanjsko Polje 237.001973
HE Đale Cetina 40.801989
HE Zakučac 538.001961
MHE Prančevići1.152017
HE Kraljevac46.41912
HE Dubrovnik Trebišnjica 126.001965
HE Zavrelje Zavrelje 2.001953

Wind energy

Most of Croatian wind energy is produced by companies in private ownership for difference of other types of energy production. Out of 25 wind firms only one is owned by HEP (VE Korlat) while others are mainly owned by private companies or foreign energy coorporations. [5]

Wind farmConnection voltage (kV)Production capacity
(MW)
Commissioned
VE Senj2201562022
VE Krš-Pađene2201422021
VE ZD2P & ZD3P1101112023
VE Vučipolje 1TBA84(planned) [6]
VE Bradarića Kosa11080(planned) [7]
VE Korlat110582021
VE VisokaTBA562024 (planned) [8]
VE Velika Popina (Zadar 6)11053.42011
VE Lukovac110482017
VE Boraja 2TBA452024 (planned) [9]
VE Danilo (Velika Glava)110432014
VE Vrataruša110422010
VE Zelengrad110422014
VE Ogorje110422015
VE Kamensko-Voštane110402013
VE Bruška110362011
VE Rudine11034.22015
VE Katuni11034.22016
VE Ponikve110342012
VE Jelinak110302013
VE ZelovoTBA302024 (planned) [10]
VE Ljubač3529.92022
VE OporTBA272024 (planned) [9]
VE Glunča11020.72016
VE Pometeno brdo110202015
VE Mazin 2TBA202024 (planned) [11]
VE Trtar-Krtolin3011.22007
VE Jasenice35102020
VE Crno brdo10102011
VE Kom-Orjak-Greda35102020
VE Orlice309.62009
VE Zadar 4109.22013
VE Ravne105.952004

Thermal energy

There are 7 thermal power plants of which 4 are also heating plants and one is combined cycle power plant. [12] Additionally, the first geothermal power plant was opened in 2019, but there are projects and potential for new ones. [13]

Thermal power plants
NameFuelProduction capacity (MW)Commissioned
TE Plomin Stone coal 199.001970
TE Rijeka Fuel oil 303.001978
KTE Jertovec Natural gas and extra light fuel oil78.001954
TE-TO Zagreb Natural gas and gas oil 300.001962
EL-TO Zagreb Natural gas and fuel oil 50.001907
TE-TO Osijek Natural gas and fuel oil 89.001985
TE-TO Sisak Natural gas and fuel oil 228.731970
GTE Velika 1 Geothermal energy 16.502019

Bioenergy

Five biopower plants are now located in Croatia and they are also used for heating purposes. [14] [15] [16] [17]

Biopower plants
NameFuelProduction capacity (MW)Commissioned
BE-TO Osijek Woody biomass 3.002017
BE-TO Sisak Woody biomass 3.002017
BE-TO Glina Woody biomass 5.002015
BE-TO Karlovac Woody biomass 5.002020
BE-TO Brinje Woody biomass 5.002022

Nuclear energy

Croatia has no nuclear power plants on its territory, but co-owns the Krško Nuclear Power Plant together with Slovenia. The Krško plant was built in the era of Yugoslavia on the territory of present-day Slovenia. Planned decommissioning is by 2043. [18]

Nuclear power plants
NameFuelProduction capacity (MW)Commissioned
NE Krško Enriched uranium 348.00 [lower-alpha 1] 1983

Solar energy

In 2014, HEP built nine solar power plants on the roofs of business buildings. The power plants are located in the office building at the headquarters of HEP in Zagreb and the buildings of the HEP Distribution System Operator. Solar power plants have the status of a privileged producer of electricity, which enables the sale of produced electricity to HROTE at a preferential price. Since 2018, Hrvatska elektroprivreda has started building integrated solar power plants according to the concept of a customer with its own production. This model enables a significant reduction in costs for own consumption of electricity. Most of the produced energy is consumed in the buildings themselves, while the rest of the energy is delivered to the distribution network. [19] HEP's first non-integrated power plant was SE Kaštelir, purchased in 2019 from a private producer, and the first independently built was SE Vis, commissioned in 2020. [20]

Solar power plants
NameProduction capacity (MW)Commissioned
SE Kaštelir 11.002018
SE Kaštelir 22.002021
SE Vis3.502020
SE Marići1.002021
SE Kosore jug (Vrlika)2.102021
SE Stankovci2.502022
SE Obrovac7.352022
SE Donja Dubrava9.992023
SE Radosavci9.99under construction
SE Jambrek4.90under construction
SE Cres6.50under construction
SE Črnkovci8.50under construction
SE Dugopolje10.00planned
SE Cres6.50under construction
SE Virje9.002023
SE Sisak2.65under construction
SE Pometeno brdo80.00planned [21]
SE Topusko13.00planned [22]
SE Promina150.00planned [9]
SE Korlat75.00planned [23]
9 integrated SPP of privileged producers0.212014–present
55 integrated SPP in the status of customer with own production2.422018–present

Transmission

Croatian transmission grid consists of lines on three different rated voltage levels, namely 400, 220 and 110 kV. Total length of high-voltage lines is 7,763.53 km (4,824.03 mi) while length of medium and low voltage lines is 141,936.9 km (88,195.50 mi). [2]

The grid was often the target of attacks during Croatian War of Independence, resulting in frequent black-outs during the period. Since then, the grid has been repaired, and reconnected to synchronous grid of Continental Europe synchronous zones 1 and 2, making it an important transit system again. [24]

Distribution

Under the 2004 Energy law, customers in Croatia are allowed to choose their preferred distributor of electricity. However, HEP Operator distribucijskog sustava or HEP-ODS (a Hrvatska elektroprivreda subsidiary) remains the largest distributor to both industry and households. Its distribution grid is 142,365 km (88,461.51 mi) long, with 26 859 transformers installed, totaling 23,421 MVA of power. [25]

In 2021 there were 2,087,229 customers, 96.2% of which were households. [2]

Development projects

Hydropower

With the implementation of the project HE Senj 2, HEP intends to use the remaining hydro potential in the Lika and Gacka basins by upgrading the existing hydropower system. The project involves the construction of a large reservoir and additional capacity in order to transfer production to the top of the daily chart. This will enable the capacity to inject high regulatory power into the power system with flexible hydro units ready for rapid power change. The construction of the hydroelectric power plant will cost 3.4 billion kuna and will have an installed capacity of 412 MW, while the construction deadline is 2028. [26]

Wind energy

In July 2022, the Spanish company Acciona Energia announced an investment of one hundred million euros in the construction of two wind farms. One will be built in the vicinity of Split, and the other between Šibenik and Knin and will contain 16 wind turbines with a production of 203 GWh of clean electricity per year. The projects named Opor and Boraja 2 will be sufficient to supply 60 thousand households, and the propellers will start spinning at these locations in 2024, after a year and a half of construction and testing. This will avoid the annual emission of 135,000 tons of CO2. In 2013, the same company built the Jelinak wind park worth 48 million euros. [27]

The European Bank for Reconstruction and Development (EBRD) will grant a loan of EUR 43 million to the company Kunovac, jointly owned by the funds Taaleri Energia SolarWind II and ENCRO Kunovac, for the construction and operation of two onshore wind farms in the Zadar region. Zagrebačka banka and Croatian bank for reconstruction and development will participate in the financing with a total loan amount of 126 million euros, and the total network capacity of the two power plants is 111 megawatts, which is enough to power 85,000 households. [28]

In January 2023, the Greek energy company EuroEnergy announced that it was taking over the 114 MW wind farm project in Lika-Senj County. The acquisition reserves the right to expand with an additional 70.5 MW of wind capacity, subject to grid upgrades that can increase production. The value of the project is EUR 150 million and will be realized in the area of Udbina. [29]

The action plan for renewable energy sources at sea is the first comprehensive study that looks at the possibilities of renewable energy development in the Adriatic, and it was financed by the European Bank for Reconstruction and Development. The study considered two technologies: wind farms (stationary and floating) and floating solar farms. Through a spatial analysis of numerous ecological and other technical parameters, the experts came up with data on the possibility of RES development in five zones with an area of 1,260 square kilometers, of which 204 km2 is within the territorial sea. It has been calculated that a 25 GW RES power plant could be installed on that surface. If the area where the medium impact on the landscape is assessed is added to that area, the possible area for RES increases to an additional 1,602 km2 and 44 GW. The development of offshore wind farms in these zones depends on concession agreements between INA and the Republic of Croatia. Also, if hydrocarbon exploitation areas in the central and southern Adriatic are added to that area, a possible 26,000 square kilometers for floating wind power plants and solar power plants will be reached, due to greater depth. [30]

Thermal power

In December 2019, the project of building a new high-efficiency combi-cogeneration unit KKE EL-TO Zagreb began, electric power 150 MW. The construction lasts for three years, and this project will replace part of the dilapidated and obsolete units at the EL-TO Zagreb location. [31] It is expected for a unit to start working in the summer of 2023.

Nuclear power

In 1978, the Adriatic island of Vir was selected as a location for a future nuclear power plant, but these plans were abandoned. [32]

According to reports, since 2009 Croatia has been discussing the option of building a nuclear power plant with Albania, in a location on the shore of Shkodër Lake, on the border with Albania and Montenegro. In April 2009 the Croatian government denied that any agreement had been signed. [33]

In a 2012 poll among 447 Croatian citizens, who were asked "Do you think it is justified to use nuclear energy for the production of electricity?", 42% answered "yes" and 44% answered "no". [34]

In 2021 the Slovenian government has issued an energy permit to GEN Energija for the planning and construction of the second unit of the Krško Nuclear Power Plant, followed by a statement by the Minister of Economy and Sustainable Development of Croatia Tomislav Ćorić that Croatia "will not look benevolently at the construction of the new bloc". [35] In March 2022, Plenković confirmed Croatia's readiness to enter the project of building the second block of the Krško NPP. [36]

Solar power

As of 2021, Croatia had 100 MW of solar power, providing 0.4% of electricity. The potential for solar energy in Croatia is estimated at 6.8 GW, of which 5.3 GW would be accounted for by utility-scale photovoltaic plants and 1.5 GW by rooftop solar systems. [37] Croatia plans to install 1.5 GW of solar capacity by 2024. [38] The total solar power grid-connected capacity in Croatia was 109 MW as 2022. [39]

In May 2023, Acciona Energy announced the construction of the largest solar power plant in Croatia. The new power plant will be spread over three million square meters of rugged state land and will have a capacity of 150 MW, which is enough to meet the needs of around 100,000 households. Its official name is SE Promina. [9]

Battery storage

In September 2022, the European Commission approved state support in the amount of 19.8 million euros for the project of building a large-capacity battery system. The project will be built in Šibenik, and will enter into operation in 2023 with a capacity of 10 MW, and ultimately the capacity will be 50 MW. [40]

Geothermal energy

The results of the geothermal potential research showed that the Virovitica-Podravina County lies on a geothermal basin. The value of the Geothermal Potential Research project in Virovitica-Podravine County, which began in 2019, amounts to 304,169 euros. Therefore, the construction of a geothermal power plant with a capacity of 20 megawatts is planned in that area, which has the potential to become the largest such power plant in Europe. It is designed up to 1,300 meters, and hot water is expected already at 600 meters. An exploratory well was completed in the area of Čađavica, which discovered a geothermal source at a depth of 4,300 meters. The areas of Orahovica, Slatina and Nova Bukovica also have geothermal potential. [41]

See also

Notes

  1. 696 MW is total output of power plant but half of it goes to Croatia

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