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Bulgaria to get energy boost with EIB-NEK deal on new hydropower plants

Bulgaria to get energy boost with EIB-NEK deal on new hydropower plants

  • The EIB will help Bulgarian national electricity company NEK prepare to build two large pumped-storage hydropower plants vital to ensuring adequate domestic and EU energy supplies.
  • The two projects involving the EIB Advisory services bolster the stability of the power grid and integrate more renewable power sources.

The European Investment Bank (EIB) will provide advisory support to Natsionalna Elektricheska Kompania EAD (NEK), Bulgaria’s national electricity company, in preparing the construction of two large pumped-storage hydropower plants in the southwestern part of the country.

The pair of new renewable energy sources, named Batak and Dospat, will each add generation capacity of approximately 800 megawatts (MW) and expand storage capacity, strengthening electricity supply in Bulgaria and the European Union.

Under the agreement signed today, EIB Advisory – as a main partner of the InvestEU Advisory Hub of the European Commission – will examine the technical feasibility and economic viability of the two projects as well as assess their benefits and risks. This will allow NEK to make informed decisions crucial for the development of the two projects.

“The EIB supports the development of strategic sustainable investment projects in the energy sector across the European Union and beyond,” said EIB Vice-President Kyriacos Kakouris. “We are pleased to provide the Bank’s expertise in assessing the feasibility and the viability of the two projects, which can significantly impact Bulgaria’s energy mix and enhance the stability of its power grid while reinforcing the overall European energy grid infrastructure.”

A pumped-storage hydropower plant (PSHPP) has the ability not only to generate hydroelectric power but also to store and then release it into the electric grid when needed, acting like a giant battery.

“The partnership between the European Investment Bank and the Ministry of Energy is key to delivering projects that will contribute to achieving the energy transition. Among them is the development of pumped-storage hydropower plants, which could become the largest energy storage batteries in the region," said interim Energy Minister, Vladimir Malinov. "The implementation of such projects will enhance our energy security, improve Bulgaria’s energy infrastructure and achieve our decarbonization goals. We are grateful for the EIB’s expertise and support for this very important project.”

“The agreement signed today between NEK and the European Investment Bank marks an important step not only for the development of the Batak and Dospat PSHPP projects but also for ensuring the security of supply within Bulgaria’s electricity system and for achieving the country’s decarbonisation goals,” said NEK CEO Martin Georgiev. “It further represents an important tool, which unlocks the value that hydropower brings for the Energy Transition. The benefits and social significance of investing in such sustainable infrastructure are undeniable and we esteem it a privilege to have the expertise and support of the EIB and the European institutions involved in the process.”

The advisory support for NEK underscores the EIB’s commitment to sustainable green and energy transformation throughout the European Union.

Key contribution to energy stability and security of power supply in Bulgaria and European Union

The pair of new renewable energy sources, located at hydropower cascade dams and reservoirs near the towns of Batak and Dospat in southwest Bulgaria, are expected to function as large rechargeable batteries, storing green energy. This will provide NEK with flexible 24-hour and weekly management, rapid capacity replacement during emergencies and additional balancing services. With an estimated total cost of about €900 million each, the plants are projected to become operational by 2032.

The two projects are part of the Ten-Year Network Development Plan (TYNDP) 2024 of the European Network of Transmission System Operators for Electricity (ENTSO-E).

Background information

About the EIB

The ElB is the long-term lending institution of the European Union, owned by the Member States. It finances sound investments that further EU policy objectives. EIB projects bolster competitiveness, drive innovation, promote sustainable development, enhance social and territorial cohesion, and support a just and swift transition to climate neutrality.

The EIB Group, consisting of the EIB and the European Investment Fund (EIF), reported total financing signatures in Bulgaria of €1.11 billion last year, more than double the €494 million in 2022. Overall, the EIB Group signed €88 billion in new financing in 2023.

About InvestEU

The InvestEU programme provides the European Union with crucial long-term funding by leveraging substantial private and public funds in support of a sustainable recovery. It also helps mobilise private investments for the European Union’s policy priorities, such as the European Green Deal and the digital transition. The InvestEU programme brings together under one roof the multitude of EU financial instruments currently available to support investment in the European Union, making funding for investment projects in Europe simpler, more efficient and more flexible. The programme consists of three components: the InvestEU Fund, the InvestEU Advisory Hub and the InvestEU Portal. The InvestEU Fund is implemented through financial partners that will invest in projects using the EU budget guarantee of €26.2 billion. The entire budget guarantee will back the investment projects of the implementing partners, increase their risk-bearing capacity and thus mobilise at least €372 billion in additional investment.

Under InvestEU, the EIB acts as the main advisory partner to the European Commission by delivering advisory services to promoters.

About NEK

Natsionalna Elektricheska Kompania EAD (NEK EAD) is a wholly-owned subsidiary of the Bulgarian Energy Holding EAD, under the principal oversight of the Ministry of Energy of Bulgaria. Established in late 1991, the company has solidified its position in Bulgaria’s power industry and economy. NEK’s mission is to ensure safe, efficient and uninterrupted power supply. The company operates 31 hydropower and pumped-storage hydropower plants, with a total installed generating capacity of 2 739 MW and a pumping capacity of 932 MW. Additionally, NEK EAD manages some of the largest dams and hydropower schemes in the country. The total capacity of the dam reservoirs operated by NEK EAD accounts for 55% of the controlled water resources in Bulgaria.

Press contacts

EIB

Tsvetelia Tsolova, This email address is being protected from spambots. You need JavaScript enabled to view it., tel.: +359 888 311 435

Website: www.eib.org/pressThis email address is being protected from spambots. You need JavaScript enabled to view it.

NEK

Vesela Babinova, This email address is being protected from spambots. You need JavaScript enabled to view it., tel. : +359 882 359 141

Website: www.nek.bg



NEK hosted a delegation of Axpo's Hydropower Division

The visit was part of a program to share best practices and experience in the field of hydropower

On May 22, NEK hosted representatives from Axpo's Hydropower Division as part of a knowledge-sharing programme. Axpo, Switzerland's leading renewable energy producer, operates 4,330 MW of hydropower and pump storage plants and is an international leader in energy trading and marketing of solar and wind energy.

The Axpo delegation comprised Jörg Huwyler, Head of Division Hydro & Biomass; Daniel Loosli, Leading Engineer Hydro & Biomass; Emil Bieri, Head of Digital Transformation from Axpo Hydropower Division; and Milena Videnova, Executive Director of Axpo Bulgaria. The Bulgarian delegation was headed by NEK’s CEO Martin Georgiev.

The experts toured the fully refurbished Belmeken Pumped Storage Hydropower Plant (PSHPP) and Momina Klisura Hydropower Plant (HPP), Belmeken Dam, and received an update on the Chaira PSHPP restoration project.

This visit builds upon a previous collaboration that began with an official NEK delegation visiting Axpo's headquarters in Switzerland in September 2023. There, Bulgarian specialists familiarised themselves with the construction and operation of the Limmern PSHPP, which shares similar characteristics to the Chaira PSHPP. Sharing expertise and best practices in hydropower technology and management can contribute to more efficient and sustainable energy production, as well as support the modernisation and efficient operation of both companies' hydropower facilities.

„Cooperation with Axpo plays an important role, as both companies are committed to promoting renewable energy sources and contributing to the transition towards a greener energy future. Knowledge exchange provides a strong foundation for implementing cutting-edge technology and effective operational strategies, ensuring continuous improvement and innovation in the hydropower sector.”, Martin Georgiev commented

About Axpo

Axpo is driven by a single purpose – to enable a sustainable future through innovative energy solutions. Axpo is Switzerland's largest producer of renewable energy and an international leader in energy trading and the marketing of solar and wind power. Axpo combines the experience and expertise of more than 6,700 employees who are driven by a passion for innovation, collaboration and impactful change. Using cutting-edge technologies, Axpo innovates to meet the evolving needs of its customers in over 30 countries across Europe, North America and Asia.

About NEK

NEK EAD is the biggest producer of electricity from renewable sources in Bulgaria

The Company lies at the heart of the electric power system of Bulgaria, producing electricity at 31 hydro-power and pumped storage hydro-power plants, with a total installed generating capacity of 2739 MW and pumping capacity of 932 MW. The flexible generation facilities of the company have a key role in ensuring security of supply and reliability and security of the grid system of Bulgaria. With its hydroelectric power the company contributes to the country’s renewable targets in the total energy balance.

NEK operates some of the largest dams and hydropower schemes in the country, applying stringent requirements on their O&M safety and efficiency. The total capacity of the dam reservoirs operated by NEK EAD represents 55% of the total controlled water resources in the Republic of Bulgaria.



PRESS RELEASE

NEK successfully completed the rehabilitation of Belmeken-Sestrimo-Momina Klisura, the largest hydropower cascade in Bulgaria

 

With the completion of the modernization of Sestrimo hydropower plant, the entire cascade, 735 MW in generating mode and 104 MW in pumping mode, is available for renewable energy production

 

With the modernization of Sestrimo hydropower plant NEK successfully completed the rehabilitation of the largest hydropower cascade in Bulgaria, Belmeken-Sestrimo-Momina Klisura. The event was celebrated with the participation of the Minister of Environment and Water, Eng. Petar Dimitrov, Deputy Minister of Energy, Mr. Georgi Samandov, Chairman of the Board of Directors of BEH, prof. Vesselina Kanatova-Buchkova, representatives of EBRD, Deputy Ambassador of the Czech Republic, Mr. Petr Vavra, Rector of the Technical University of Sofia, prof. Ivan Kralov, the Chairman of the BBCPE, prof. Valentin Kolev, representatives of the rehabilitation contractor consortium, representatives of the local government, veterans and employees of the company.

The successful implementation of the rehabilitation of both Sestrimo HPP and the power plants of the whole cascade is of key importance for ensuring the stability and reliability of the Bulgarian power system. “The modernization ensures failure-free operation of the plants, which will continue to be a reliable source of renewable energy for decades to come," emphasized NEK CEO Eng. Martin Georgiev.

Eng. Georgiev thanked the donors of the project and especially the European Commission and the KIDS Fund Administrator, EBRD, for their support throughout the project implementation. He also thanked the rehabilitation contractor for the successful cooperation. Martin Georgiev also expressed his appreciation to the employees of Sestrimo HPP and congratulated them for their high professionalism and excellent performance of the modernization.

"The flexibility of the hydropower capacities allows successful balancing of the electricity system not only in Bulgaria but also in the region, which makes Belmeken-Sestrimo-Momina Klisura cascade a key component for the Bulgarian energy sector," Deputy Energy Minister, Georgi Samandov, said.

Minister Dimitrov wished a trouble-free operation and assured the hosts from the Ministry of Energy and NEK that in the face of the MoEW, as directly involved in water management at national level, they have a reliable partner who will always contribute to the common strategic goals.

The scope of the rehabilitation of Sestrimo HPP includes design, manufacture, supply, installation and commissioning of turbine equipment, plant-wide control and monitoring systems and new operator stations. The modernization will contribute to reducing maintenance costs, improving performance in terms of voltage levels and frequency control, increasing operational reliability, and making more efficient use of the available hydropotential.

The cost of the rehabilitation of Sestrimo HPP is EUR 4,401,131.55 and the cost of the entire cascade is EUR 19,997,642.45. The financing is 70% European funds from the Kozloduy International Decommissioning Support Fund (KIDSF) and 30% NEK's own funds. KIDSF is administered by the EBRD and funded by the European Union and the following donors: Austria, Belgium, Denmark, France, Greece, Ireland, the Netherlands, Spain, Switzerland and the United Kingdom.

Further information about the rehabilitation

The Sestrimo HPP rehabilitation project was implemented within the framework of a grant agreement with the European Bank for Reconstruction and Development as KIDSF Administrator for the rehabilitation of Belmeken-Sestrimo-Chaira hydropower complex and the rehabilitation of Vacha-1 HPP 110 kV switchyard and other HPP systems under joint control. The total budget of the agreement is EUR 37 million, of which 70% is financed by KIDSF and 30% by NEK.

Belmeken - Sestrimo - Momina Klisura cascade includes Belmeken PSHPP, Sestrimo HPP, Momina Klisura HPP, Belmeken Reservoir, Stankovi Baraki balancing basin and Momina Klisura balancing basin. It is on the northeastern slopes of the Rila Mountains and extends from 1920 m above sea level at Belmeken dam to 369 m above sea level at Momina Klisura HPP.

On 18.05.2018 a contract was signed between NEK EAD and consortium KONČAR KET - ČKD BLANSKO - RUDIS for the rehabilitation of the three power plants of the cascade.



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