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April 6, 2025
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Serbia’s TSO EMS inks contract for Obrenovac – Bajina Bašta power line within Trans-Balkan Corridor

Serbia’s transmission system operator Elektromreža Srbije signed a contract for the construction of a two-system 400 kV transmission line from the Obrenovac substation to the Bajina Bašta substation.

The power line from the Obrenovac substation to the Bajina Bašta substation is part of the third section of the Trans-Balkan Corridor for the transmission of electricity, a project of national and regional significance, TSO Elektromreža Srbija (EMS) said.

The Trans-Balkan Corridor connects Romania, Serbia, Bosnia and Herzegovina, Montenegro and Italy.

Apart from the transmission line, the third section comprises equipping two switchyards in the Obrenovac substation and upgrading the Bajina Bašta substation to 400 kV.

The job was awarded to Kodar Energomotaža at an international tender

The transmission line will be 109 kilometers long. The start of construction is planned for April, while the completion is expected in 2027.

The project is financed by EMS, a donation from the Western Balkans Investment Framework (WBIF), and a loan from Germany’s KfW Development Bank.

The EUR 71 million contract was signed by EMS CEO Jelena Matejić and Mladen Žujković, the representative of Kodar Energomontaža, the contractor. The company was selected after a complex international tender, according to Serbia’s TSO.

The first section of the Trans-Balkan Corridor, from Pančevo to the Romanian border, was completed and put online in December 2017.

The second section was finished in June 2022. It consisted of transmission lines between Kragujevac and Kraljevo and upgrading the substations in the two cities.

Matejić: Serbia is a crucial electricity hub in this part of Europe

The corridor plan also has a fourth section. It envisages a double 400 kV power line between the substations in Bajina Bašta in Serbia, Višegrad in Bosnia and Herzegovina and Pljevlja in Montenegro.

“The Trans-Balkan electricity transmission corridor is certainly one of the most important infrastructure projects to safeguard a stable supply of electricity in our country. It will also enable the integration of the electricity market and position Serbia as a crucial electricity hub in this part of Europe,” Matejić stressed.

The importance of the Trans-Balkan Corridor was demonstrated recently by the commissioning of the second system within the transmission link between Romania and Serbia. It increased the cross-border transmission capacity by 80% – from 500 MW to 900 MW.

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April 6, 2025
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Cypriot minister not optimistic about cable project with Greece amid Turkish intimidation

Cypriot Minister of Finance Makis Keravnos said the Great Sea Interconnector (GSI) project still faces very serious political obstacles. He highlighted the pressure from Turkey, alongside the financing disputes with Greece regarding the EU-backed bilateral investment to lay an undersea electricity cable that would connect the two countries.

Following a second incident this month when Turkish navy intimidated ships researching the seabed, Minister of Finance of Cyprus Makis Keravnos expressed doubt in the feasibility of the Great Sea Interconnector (GSI). It is a project to connect his country’s electricity system with Greece’s through Crete, by laying a cable under the sea.

“I can’t say I’m optimistic, especially when there are still very serious political obstacles, namely those posed by Turkey,” the official said, as quoted by domestic media. Namely, Turkish corvette TCG Bartın has approached Ievoli Relume and NG Worker, Italian vessels conducting research for the interconnection, in international waters just north of Crete.

GSI investment concerns now have to be addressed

Nevertheless, a recent due diligence study by a hired foreign consultancy showed the draft bilateral deal heavily favors Greece’s Independent Power Transmission Operator (IPTO or, in Greek, Admie). The authors warned of an “unnecessary additional layer of risks for any equity investors in GSI.”

Keravnos said the document confirms his concerns and that they must be discussed. While the two sides are working to overcome their financing dispute, the project is suffering delays, increasing the risk of cancellation.

Keravnos said in October that the total cost could well surpass EUR 2 billion. The Crete-Cyprus part is substantially leaning on funding from the European Union. The idea was to later extend the interconnector to Israel.

Turkey has been obstructing both GSI surveys and hydrocarbon exploration around Cyprus. There were several incidents involving gunboats.

Cyprus craves interconnections, flexibility sollutions

Meanwhile, Cyprus is struggling to maintain the stability of its isolated electricity system. Oil-fired power plants are increasingly working near their upper limits in peak hours. Conversely, storage capacities, flexibility systems and digital controls are needed for mitigating the pressure on the grid at times of weather-induced jumps in the production of wind and solar power, but also sharp drops.

It is the only noninterconnected country in the European Union. Moreover, Cyprus has no access to natural gas yet.

GSI was formerly known as EuroAsia Interconnector.

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April 6, 2025
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EDP Renewables inaugurates two wind power plants in Greece

EDP Renewables declared its two new wind farms in Central Greece and Thessaly open, adding almost 70 MW to the transmission grid. The country expanded its wind power capacity by only 125 MW last year.

EDP and its subsidiary EDP Renewables held an inauguration ceremony for two wind parks in Greece. It secured government support for both in 2019 at renewable energy auctions, through 20-year contracts for difference (CfD). At the time, the Portugal-based utility expected to begin commercial operations in 2022.

The two facilities have almost 70 MW in combined capacity connected to the transmission grid. The expected annual output is 143 GWh. It is equivalent to the electricity needs of more than 37,000 Greek households. EDP Renewables estimated carbon dioxide emissions savings to be over 102,000 tons per year.

Greece increased its wind power capacity by only 125 MW last year.

EDP Renewables relies on 20-year CfDs in its wind power investments in Greece

The event was held at the Xironomi site in Boeotia (also Beotia and Viotia) in the region of Central Greece. The wind farm has a capacity of 36 MW and the CfD is for 33 MW.

The other facility is Chalcodonio. It is located in the Magnesia regional unit in Thessaly. The 33.6 MW wind farm project has won a 30 MW contract for difference.

“Greece is emerging as a regional leader in renewable energy, as its abundant wind and solar resources offer enormous potential. The country’s commitment to reduce carbon emissions by 55% by 2030, in line with EU targets, makes it an attractive market for clean energy investments,” said Country Manager of EDP Renewables Dionysios Andronas.

Company has four facilities online

The company has 150 MW online in Greece in four wind parks, positioning it among the top 10 operators in the segment, according to the announcement.

Last year EDP Renewables commissioned its Erimia wind power plant of 35 MW and an estimated annual production of 71 GWh. It entered the Greek market in 2018 with two 20-year CfDs.

The company later reached an agreement with infrastructure group Ellaktor for the joint development of onshore wind projects.

EDP plans 3 GW of renewable energy capacity per year, focusing on wind and solar power as well as energy storage. In its business plan for the period 2023-2026, the company earmarked EUR 12 billion for investments on a global scale.

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April 6, 2025
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Race against time for Greece to avoid a blackout on Easter

Greek authorities are rushing to secure the electricity system against a possible blackout during Easter.

Greece currently produces much more electricity than it needs on certain days due to a high renewables penetration and insufficient energy storage. It should be noted that in 2024 the country became a net power exporter for the first time after two decades. Usually, extra power is no problem, as it is exported and curtailments ensure nominal system operation with no danger of a blackout.

However, this year there will be days when low demand combined with high renewable electricity production creates a problem. At Easter, demand traditionally craters.

Independent Power Transmission Operator (IPTO or Admie) estimates that on Easter Sunday the country’s interconnections would operate near their maximum safety limits. If even a single line goes offline, it would lead to a domino effect and the possible loss of all the connections with neighboring countries. As a result, the frequency will rise beyond safe limits in the Greek system, triggering the desynchronization of power plants and a blackout.

To avoid such a scenario, authorities have imposed adding telemetry systems in recent months to photovoltaic units of over 400 kW connected to the distribution network. Currently, the Hellenic Electricity Distribution Network Operator (HEDNO or DEDDIE) can curtail 1.9 GW of solar power capacity, but another 6 GW is unswitchable.

Telemetry must be enabled by April in small PV units

A deadline was given until February 13 to the owners within the latter category to add telemetry equipment so that HEDNO can curtail their production when needed. However, very few complied and the rest said they are still waiting for the systems to be delivered.

HEDNO estimates that 5,700 plants with capacities of 400 kW to 1 MW must be added to curtailments, as well as 600 plants with more than 1 MW apiece.

Based on the above, owners of solar power units and the two grid operators must add the ability by April to ensure system stability.

Gradual installation of energy storage facilities is expected to help significantly and bring curtailments down.

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April 6, 2025
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Greece presents 3.55 GW plan for standalone batteries

A new ministerial decree sets the framework for the installation of 3.55 GW of energy storage – standalone batteries, without subsidies.

The new framework for batteries, presented by the Ministry of Environment and Energy, is under public consultation.

It drastically increases the ambition, originally for between 2 GW and 2.5 GW. Now the government aims for 2.65 GW of batteries in the transmission grid plus another 900 MW in the distribution grid.

It should be noted that the Greek National Energy and Climate Plan (NECP) calls for 4.3 GW of storage by 2030. So far, 900 MW was allocated through auctions, which means that all the rest would be under the scope of the new plan. The difference is that there are no more subsidies, as battery storage is considered a mature technology.

Strict completion times for new standalone batteries

To participate in auctions, batteries will need to provide at least two hours of storage. The new projects will face strict completion deadlines, including 14 months for grid connection terms. Otherwise, investors will lose the EUR 200,000 per MW letter of guarantee required for projects in the transmission network and EUR 50,000 per MW in distribution.

Another interesting aspect is the inclusion of a competition restriction. Each company would be able to submit applications for a maximum 200 MW in combined capability.

Capability quota split among several categories

Future auctions for standalone batteries will be divided into categories.

In the transmission network, 500 MW was allocated to projects with power purchase agreements (PPAs) of at least eight years with energy intensive industries.

Another 100 MW is set for batteries of over 10 MW each, also with private PPAs.

There is a 250 MW quota for batteries in coal regions. The largest part, 1.8 GW, is for other projects

When it comes to the distribution level, 400 MW is for battery energy storage systems (BESS) of at least 5 MW apiece.

The categories of 1 MW to 5 MW, and under 1 MW, have quotas of 200 MW each. The ministry envisages 100 MW for investments with PPAs signed with businesses or industrial production facilities.

The regions of Central Macedonia and Western Macedonia account for the largest shares of the planned operating power, 300 MW each.

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April 6, 2025
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Alexandroupolis LNG Terminal to remain out of service at least until end-March

On the day when it was supposed to get the Alexandroupolis LNG Terminal in Greece back online, its operator Gastrade extended the outage by another month. The company never revealed the details of the malfunction.

Just as gas storage in the European Union slipped below 40% of capacity, the operator of the Alexandroupolis LNG Terminal substantially pushed back the target date of restarting operations. Located offshore northeastern Greece, the facility has major potential for boosting the market in other Southeastern European countries and providing ample supply.

After several shorter delays, Gastrade extended the outage by another month, until March 31. On January 23 it reported a technical issue. Then it announced that a limited regasification service would be available, but there were virtually no gas flows for a few days. On January 28, the company declared that the liquefied natural gas facility went offline.

Gastrade was supposed to bring Europe’s newest LNG terminal back to service on February 28. Instead, it prolonged the outage for a whole month that day, fueling concerns about the severity of the malfunction and speculation about the cause.

Operators association Gas Infrastructure Europe and the European Network of Transmission System Operators for Gas (ENTSOG) noted the update.

Capacity utilization of Alexandroupolis LNG Terminal was relatively low

Put into commercial operation at the beginning of October, the facility could regasify LNG to as much as 5.5 billion cubic meters per year. The capacity of the floating storage and regasification unit (FSRU), the LNG ship, is 153,500 cubic meters.

Gastrade’s update fueled concerns about the severity of the malfunction and speculation about the cause.

Importantly, the Alexandroupolis LNG terminal has only a handful of contracts. It means the controversial breakdown doesn’t directly jeopardize gas supply in the Balkans much. In addition, Bulgaria’s Bulgargaz secured a replacement from Turkey.

Founding shareholder Elmina Copelouzou, LNG carrier fleet owner and operator GasLog, DEPA Commercial, Bulgartransgaz and Greece’s National Natural Gas System Operator (DESFA) all control 20% each in the joint venture in Alexandroupolis.

Discussions are underway in the European Union to cut back the obligatory 90% gas storage level, on November 1 each year, to 80%. The measure obviously wouldn’t help next winter’s security of supply, but there would be less demand and upward pressure on prices.

Balkan Stream pipeline is currently only direct route for Russian gas

Just before the Alexandroupolis LNG Terminal crashed, an outage at Azerbaijan’s Shah Deniz gas field disrupted the deliveries to Europe through the Southern Gas Corridor, toward the Trans Adriatic Pipeline – TAP.

Ukraine declined to renew a contract with Russia, halting the flow of gas to Central Europe at the beginning of the year. The TurkStream and Balkan Stream pipelines remained the only direct and operating route for Russian gas.

Serbia, Hungary, Bosnia and Herzegovina and North Macedonia are counting on the Alexandroupolis LNG Terminal, the new interconnectors between Greece and Bulgaria (IGB) and Bulgaria and Serbia as well as on deliveries of gas from Azerbaijan. In addition, there are plans for gas pipelines connecting North Macedonia with Greece and Serbia.

Serbia and Romania intend to build a gas link of 1.6 billion cubic meters in annual capacity. Minister of Energy Sebastian Burduja said last year that Romania has become the biggest natural gas producer in the European Union. Moreover, its Neptun Deep offshore field is due to come online in 2027.

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