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April 30, 2025
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Croatian firm ENNA takes over 87.5 MW solar project in Romania

Croatian energy company ENNA Solar, part of ENNA Group, has signed an agreement with Austria-based Kraftfeld Energy to acquire an 87.52 MW ready-to-build solar power plant project in Romania.

ENNA Solar plans to start construction in the third quarter of 2025, with the solar power plant expected to be fully operational and connected to the grid by the third quarter of 2026, according to a press release from the Croatian company.

“The investment, valued at around EUR 60 million, represents our first large-scale project outside of Croatia and one of our biggest green energy production investments to date,” said Boštjan Napast, President of the Management Board of ENNA Group.

The plant is expected to generate an average of 133 GWh a year

The solar power plant will be built in Giurgiu county, near the town of Mihăilești, 25 kilometers southwest of Bucharest. It would cover an area of 93 hectares, approximately the size of 130 football fields, ENNA stated. Its expected average annual electricity output is 133 GWh.

In the site’s close vicinity, Israel-based Nofar is building the 146 MW Ghimpați solar power plant, while the locations for its 169 MW Iepurești plant and 74 MW Slobozia facility are nearby as well.

Austria’s Kraftfeld Energy, which developed the Mihăilești project, owns and operates solar farms and energy storage systems in several European countries, primarily Romania, Hungary, Croatia, and Austria.

The investment in the solar power plant in Romania aligns with ENNA Group’s 10-year development plan, which includes investments totaling EUR 330 million in solar in Croatia and abroad, according to the press release.

ENNA also develops wind farms, geothermal projects, and battery storage systems

In addition to solar, ENNA also invests in wind farms, battery storage systems, and geothermal energy projects. It already has around 50 MW of completed renewable energy projects or projects in an advanced stage of readiness, as well as approximately 350 MW in various stages of development.

In the geothermal sector, ENNA has two active geothermal power plant projects in Croatia, with a capacity of 20 MW and 15 MW, respectively, representing a total investment of EUR 240 million.

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April 29, 2025
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European Commission launches call for investment in green transition, critical raw materials in Western Balkans

As part of its Growth Plan for the Western Balkans, the European Commission has invited private businesses from the EU, the European Economic Area (EEA), and the region itself to express interest in investing in sectors including the green transition, critical raw materials, sustainable transportation, and digitalization.

The objective is to open a dialogue on concrete investment opportunities and identify ways to overcome related constraints in the Western Balkans region, according to the call for expressions of interest.

Although financial support is not guaranteed, the European Commission could potentially back some projects with its available policy, technical, and financial instruments. It may also facilitate contact with partner financial institutions for potential financial cooperation on eligible projects.

Financial support is not guaranteed, but some projects could be backed by the European Commission or referred to financial institutions

Proposed investments must take place in one or more of the following economies: Albania, Bosnia and Herzegovina, Kosovo*, North Macedonia, Montenegro, and Serbia. The minimum investment threshold is EUR 10 million, and the required participation by the project promoter is at least 15% of the total value of the investment project.

The deadline to submit expressions of interest is May 21

The first phase of the call is open for submissions until May 21, but it may be reopened for subsequent phases, depending on the number and scope of submissions received.

Investment in green transition, critical raw materials, sustainable transportation

The priority areas are based on the strategic priorities of the Growth Plan for the Western Balkans and the Western Balkans Investment Framework (WBIF), focusing on key economic sectors where foreign investment is needed.

In the area of the green transition, investments are required in renewable energy, energy efficiency, and innovative energy technologies in order to reduce dependence on fossil fuels, foster a circular economy, mitigate climate change, and modernize energy, water, wastewater treatment, and waste management infrastructure, according to the call.

Ensuring environmentally responsible access to critical raw materials

When it comes to critical raw materials, investments are needed to ensure reliable and environmentally responsible access to such materials, in order to support the development of key industries across all supply chain stages, according to the European Commission.

The other areas envisaged by the call are sustainable transportation, including urban mobility; the digital transition, including the roll-out of 5G; integration into the EU industrial supply chains; sustainable tourism; human capital development; and impact finance, including setting up private funds to invest in projects with a strong green and/or social impact.

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April 29, 2025
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KEK issues call for reconstruction of Kosovo A3 coal plant unit

After 55 years of operation, a unit of KEK’s coal-fired power plant near Prishtina in Kosovo* is about to get a makeover, worth EUR 137.3 million. Firms can respond to the prequalification call for the facility’s rehabilitation and modernization by March 3.

Government-controlled Kosovo Energy Corp. (KEK) launched a project for boosting the capacity and efficiency of unit A3 in the Kosovo A thermal power plant. At the same time, emissions of pollutants must be reduced by 55% to 66% and brought in line with the European Union’s rules.

The unit was built in 1970 and now it would be reconstructed for the first time. The utility wrote in the call for prequalification that the investment is estimated at EUR 137.3 million.

The rehabilitation and modernization project aims to extend the operational life of A3 by 20 years. The capacity would be raised to 215 MW from the current range of 120 MW to 140 MW. The facility’s original capacity was 200 MW.

In addition, the selected contractor needs to raise the number of operating hours to 7,700 per year from 5,400. Kosovo A3 so far worked 260,000 hours. Annual output is seen more than doubling to 1.5 TWh.

Reconstructed, the facility will cut coal use in production to 1.15 tons per megawatt-hour from up to 1.6 tons now, according to the assignment.

The emissions of particulate matter – PM particles – need to drop to below 20 milligrams per cubic meter. According to the project, the upper limit for both nitrogen oxides (NOx) and sulfur dioxide (SO2) is 200 milligrams per cubic meter. The United States Agency for International Development (USAID) provided technical support.

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* This designation is without prejudice to positions onstatus and is in line with UNSCR 1244/99 and the ICJ Opinion on the Kosovo declaration of independence.
April 29, 2025
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Electricity system in Spain, Portugal collapses amid extreme temperature variations

Power was out today throughout Spain and Portugal as well as in Andorra and parts of southern France, in one of the most serious such incidents so far, on a European scale. The European Commission’s Executive Vice President Teresa Ribera and other officials from the EU and the affected countries said there are no indications of sabotage or cyberattack.

REN, the transmission system operator (TSO) of Portugal, said extreme temperature variations inside Spain led to anomalous oscillations in 400 kV lines.

Grid operators and electricity producers are gradually restoring the power supply after a massive outage struck the Iberian peninsula today. Prime Minister of Spain Pedro Sánchez convened the National Security Council. It is one of the most serious blackouts in Europe in many years. The outage spread throughout Spain and Portugal.

Power was out in Andorra and, briefly, in parts of southern France. Transportation and telecommunications were heavily affected.

Spanish TSO Red Eléctrica de España called it a “collapse of the Iberian electricity network.” The company said it would take six to ten hours to restore it. Notably, the production system is relying almost completely on photovoltaics and wind farms at the moment, so just a few hours of solar power production remain.

Outage could have originated from power line in France damaged by fire

The outage paralyzed major cities including Madrid, Barcelona and Lisbon and caused disturbances in the European grid. The European Commission’s Executive Vice President for Clean, Just and Competitive Transition and Commissioner for Competitiveness Teresa Ribera said there were no indications that “any kind of sabotage or cyberattack” was behind the grid collapse.

According to the Government of Portugal, the incident started from outside the country

According to the Government of Portugal, the incident started from outside the country and, apparently, in Spain.

Portuguese transmission system operator REN first suggested that damage to a high-voltage line in southwestern France from a fire was a possible cause. The company later blamed extreme temperature variations inside Spain for anomalous oscillations in 400 kV lines.

Shares of solar, wind power production in Spain breaking records

In the spring and autumn, when there is little to no demand for heating or cooling, electricity grids in most of Europe are sometimes strained from surges in high solar and wind power production, amid a lack of energy storage and flexibility capabilities that would balance the surplus.

On April 16, the Spanish electricity system achieved total coverage for the first time with renewable energy sources. At one point during the day, wind and solar met 100.6% of demand. Then on April 21, solar power generation was equivalent to a record 78.6% of domestic demand for a moment.

Reid: The massive outage occurred while prices are negative in electricity markets across Europe

“Spanish grid operator Red Eléctrica has so far blamed a power ‘oscillation’ on the power outage. We still don’t know the cause but it looks like problems at the Spanish-French power interconnector led to the Spanish grid operator islanding their power system and I would say at this point they lost control,” said Gerard Reid, investor and strategic advisor in energy, finance and geopolitics.

It has also proven difficult to restore power with multiple black start (restart) procedures taking place, but the issue is that at the time of the blackout there were no conventional power units in operation, he pointed out. Reid added it makes the restart complicated and stressed that Europe requires enhanced grid-scale battery storage solutions, including for black start capabilities.

He also highlighted the fact that the massive outage occurred while prices are negative in electricity markets across Europe.

Of note, a grid incident last summer left much of the Western Balkans and parts of Croatia out of power for several hours.

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April 29, 2025
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Episodes of negative power prices in Slovenia, Romania spread to workdays

Romania registered the first negative day-ahead electricity price for a workday. The phenomenon, which only used to occur on holidays and weekends, has emerged in Slovenia as well.

In spring and autumn, most of Europe occasionally faces periods of excessive power grid loads. The rapid rise in solar and wind power production and the lack of accompanying energy storage and flexibility capabilities are straining the system at times when demand is low. Advanced electricity markets countered the issue by introducing negative prices.

When prices hit zero or go below zero, the seller delivers electricity without compensation or even has to pay to the buyer, respectively. The phenomenon was normally reserved for holidays and weekends, but more day-ahead markets are now experiencing it for workdays as well.

Downward pressure in Romania from strong inflow of negatively priced electricity via Hungary

Romania saw its first such episode yesterday, on Sunday, in the session for today, Profit.ro reported. Prices in its day-ahead market are negative in five out of 24 periods of one hour, between 11:00 and 16:00.

The country is importing at almost 2 GW via Hungary and exporting at up to 1.5 GW to Bulgaria, the news website added. The article notes that renewable energy producers, especially in Germany, where prices are also negative, are exporting to other markets to ease the impact. They usually benefit from subsidies, so generating electricity isn’t necessarily unprofitable even when they sell at a loss.

In addition, shutting down and restarting power plants can be more costly than paying the other side to take excess output.

The level in Romania went to as low as EUR 6.18 per MWh below zero. But the daily average is EUR 76.54 per MWh. The peak, is EUR 198.16 per MWh, between 20:00 and 21:00, when there is no sunlight and prosumers only consume.

Negative prices turn Slovenia’s HSE into electricity consumer

Prices in Slovenia for today also came in negative between 11:00 and 16:oo, which is very rare for a workday, Naš stik reported. Among other factors, the two-day May 1 holiday shortens the current workweek. The lowest, between 14:00 and 15:00, is EUR 6.18 euros per MWh below zero.

In comparison, the lowest price for Sunday on the BSP Southpool exchange was EUR 104 per MWh under zero.

At one point during the Easter holiday, virtually all HSE’s production capacities were offline and the Avče pumped storage hydropower plant was storing electricity from the grid

“Last year, we had 219 hours in Slovenia when prices were negative. This year, we are already at number 72, and we have only just entered the critical period,” said Deputy Director of System Operations of ELES Aleš Donko. The company is Slovenia’s transmission and distribution system operator.

State-owned power utility Holding Slovenske elektrarne (HSE) found itself in an unusual situation during the Easter holidays because of negative prices.

“For a while, we were actually an energy consumer, not a producer, which is our core mission… Virtually all our power plants were shut down, and the Avče pumped storage hydropower plant was pumping water into the upper reservoir at full capacity,” Head of Operation Planning and Management Jernej Brglez said.

Portugal and Spain, which suffered major outages today together with France, both registered negative prices every day in the third week of April.

Also of note, Greece is preparing to introduce negative prices in the balancing market.

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April 28, 2025
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Horius becomes exclusive distributor of PupinEnergy chargers for Serbia

The company Horius d.o.o. has officially signed an exclusive distribution agreement, making Horius the sole authorized distributor of PupinEnergy AC electric vehicle chargers in the Republic of Serbia. This partnership marks a significant step forward for e-mobility development in the country, providing high-quality and reliable EV charging solutions inspired by the legacy of one of Serbia’s greatest scientists – Mihajlo Pupin.

PupinEnergy draws its inspiration from the work of Professor Mihajlo Idvorski Pupin, a Serbian-American scientist and inventor whose 34 patents – including the famous Pupin coil – still play a crucial role in telecommunications and electrical engineering. Honoring his legacy, PupinEnergy designs advanced chargers that combine technological sophistication, ease of use, and reliability in everyday conditions.

Product line available in Serbia

Through the partnership with Horius, customers in Serbia will have access to three key PupinEnergy charger models:

  • PowerGo MultiPlug 2000 – A portable 11 kW charger, perfect for travel and international use. Equipped with automatic fault detection, overheating protection, and an ergonomic handle for easy handling.
  • SkyCharge 500 (Lite, Ultra, Pro) – A premium ground-mounted charger available in 7 kW to 22kW variants. Designed for both residential and commercial users who demand high performance and easy installation, with weather-resistant construction.
  • WallMax 1000 (Lite, Ultra, Pro) – A wall-mounted home charger offering up to 22 kW charging power. Built for fast and reliable charging, it features a modern design, excellent weather resistance, and a three-year warranty.

Horius – a partner in sustainable energy

Horius has long been a leader in the transition to sustainable energy solutions, offering comprehensive services in the design, construction, and management of solar power plants, as well as energy trading. As PupinEnergy’s exclusive partner in Serbia, Horius further strengthens its mission toward a greener and more energy-efficient future.

With this collaboration, PupinEnergy and Horius send a clear message: the future of mobility in Serbia is electric, sustainable, and powered by cutting-edge technology rooted in local spirit and global quality.

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