Between August 17, 2026 and August 23, 2026, 56 articles were published across power markets, electricity policy and infrastructure developments in Southeast Europe. The most-read items included a surge in SEE spot prices on August 17, Serbia-focused coverage on wind investment and CBAM exposure, and Bulgaria’s preparations for additional Kozloduy safeguards as Danube water levels fell. Other reporting during the period covered electricity demand trends, trading price movements, LNG and oil supply developments, and a range of renewable projects.
Spot power price moves and regional trading signals
SEE spot power prices surged on August 17 as demand recovered while weaker wind output tightened the regional balance. On August 18, spot prices fell as core markets converged around €165/MWh. Trading coverage also pointed to day-ahead price volatility later in the week, including a surge on August 21 when Serbia led a rally and HUPX topped €174/MWh.
On August 19, SEE day-ahead power prices rose as demand rebounded and wind output dropped. On August 20, electricity prices fell as stronger generation widened intraday spreads, while Croatia’s June power output slipped as imports continued to cover a large part of demand. The same period also included reporting that SEE electricity prices moved lower alongside stronger generation conditions.
Electricity system developments across Southeast Europe
Electricity reporting during the period included Romania opening a new market for demand flexibility on August 22. Hydropower recovery pushed Bulgaria deeper into an electricity surplus on August 20, while Montenegro electricity bills climbed in July as household consumption rose on August 19. Montenegro also reached a record 12.2 GWh of electricity demand on August 18, despite wildfire-related outages.
Croatia recorded a summer evening demand peak of 3.4 GW on August 18, with rooftop solar reshaping the load profile. Romanian electricity demand fell by 3.3% on August 18, supported by hydro and solar generation increases. Other policy coverage included Greece approving a trimmed 2026–2030 distribution investment programme, alongside intensified wildfire investigations into Greece’s electricity distribution network.
Nuclear cooling constraints and Kozloduy safeguards
Nuclear coverage highlighted changes at Slovenia’s Krško plant tied to river conditions. On August 17, Krško nuclear output slipped below its monthly plan despite full plant availability, then returned to full reactor power on August 21. On August 20, Krško cut output as heat and low Sava flows tightened cooling limits, before raising reactor output to 90% on August 17.
Bulgaria’s reporting focused on Kozloduy curtailment linked to Danube hydrology. On August 22, Kozloduy curtailment was described as turning Danube water conditions into a nuclear risk, with the same period noting Bulgaria’s preparations for additional Kozloduy safeguards as Danube water levels fell. The coverage placed the river conditions alongside operational constraints at the nuclear site.
LNG route to Romania and gas market positioning
The gas segment included reporting that Alexandroupolis LNG became a commercial gas route to Romania on August 22. Transgaz also explored US LNG equity investment as Romania expanded regional gas ambitions on August 20. In parallel, Romgaz targeted first electricity from the long-delayed Iernut plant before year-end on August 21.
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Batteries, solar buildouts and small-scale generation plans
The renewables pipeline in the region included storage additions in Romania. GEN-I used Romania to build a trading-led battery platform on August 22, while E-Infra added a 95.5 MW Satu Mare battery project to Romania’s fast-growing storage market on August 21. Solar developments also spanned multiple countries, including Croatia where HEP ESCO planned a €5.3mn programme for 90 rooftop solar installations.
Bulgaria’s battery boom was reported as starting to reshape solar price formation on August 17. In Montenegro, EPCG advanced its Krupac solar project (41.8 MW), with main-design procurement reported on August 21. Montenegro also saw EPCG open a third tender for the small hydropower plant Otilovići with an estimated value of .
Econergy secured financing for a combined solar-storage project in Romania with capacity of 342 MW on August 17, 2026 . North Macedonia awarded contracts worth €27.65mn for 30 MW of coal-site solar capacity on August 19, 2026 . UNDP opened procurement for six solar plants in Bosnia and Herzegovina on August 19, 2026 .
EPCG tenders, hydropower procurement and pumped storage progress
The hydro segment included Montenegro where EPCG opened its third tender for the Otilovići small hydropower plant valued at €7mn on August 21, 2026 . Bosnia and Herzegovina’s EPBiH restarted design procurement for the 16 MW Janjići hydropower project after a legal setback on August 21, 2026 . Bosnia’s power sector was also reported to carry exposure of €210mn between wet and dry hydrological years on August 18, 2026 .
Croatia’s HEP advanced its Vinodol pumped-storage project with capacity of 160 MW on August 17, 2026 . In Montenegro, EPCG also advanced its Krupac solar project alongside these hydro developments within the same reporting window.
Wind project oversight, concessions and commissioning steps
The wind pipeline covered multiple countries with different stages of development. Montenegro’s Njegovuđa wind project moved into the real development test on August 22, 2026 , while Bosnia and Herzegovina saw Republika Srpska offer a concession for the €66.5mn Trusina wind farm on August 21, 2026 . Serbia’s EPS strengthened oversight of the delayed Kostolac wind project with capacity of 66 MW on August 21, 2026 .
A separate Serbian update reported Vetrozelena advancing toward commissioning with an inspection tender for a planned 300 MW wind project on August 19, 2026 . Montenegro’s Gvozd wind farm was reported to start reshaping EPCG’s summer generation balance on August 20, 2026 .
Oil supply constraints and sanctions deadlines affecting energy security
The oil segment included reporting that NIS entered another OFAC deadline as Serbia’s fuel security remained exposed on August 22, 2026 . Low Danube levels were described as turning Serbia’s fuel supply into a logistics challenge on August 20, 2026 . MOL approached the final stage in negotiations for a Russian-controlled NIS stake on August 20, 2026 .
A separate policy item noted that Romania cut diesel excise by 20% ———————————————————————————————————. This followed wholesale and retail price surges reported for August 18, 2026 .
Circular economy compliance themes: CBAM verified electricity and market design inputs
A Serbia-focused update said Clarion Engineer joined OIE Serbia as a knowledge partner for CBAM verified electricity on August 22, 2026 . Coverage also tied Serbia’s CBAM exposure to changes in electricity pricing and PPA design during the same period that included multiple market-read items from August 17–18.
The same reporting window included an item describing how Serbia’s grid freeze redraws the economics of wind investment dated August 17, 2026
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The period also featured reporting that low Danube levels affected not only fuel logistics but also broader energy operations across countries connected to river hydrology conditions. Alongside this, Bulgaria’s Kozloduy curtailment coverage placed Danube water conditions directly into nuclear risk framing dated .
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A final set of updates within this window included Romania shifting household energy support from more solar toward battery storage on . Romanian solar was also reported to cover about “70 per cent” o f midday demand during Cernavoda outage on August 21, 2026.
