Between September 7, 2026 and September 13, 2026, 71 articles were published across Southeast Europe energy coverage. The most-read items in the period included Engie adding a four-hour Calan battery to Romania’s storage pipeline on September 7, 2026. Other top reads were Romania’s 99.2-MW Green Breeze wind farm approaching commercial operation on September 7, 2026, and Croatia opening a €38 million household energy scheme with battery support on September 8, 2026. EPS also featured as it sought private renewable projects as Serbia accelerated generation diversification on September 7, 2026.
Electricity pricing, drought impacts and winter policy measures
Electricity reporting during the week highlighted price moves and operational constraints across the region. On September 12, 2026, coverage said SEE baseload prices retreated while €250/MWh evening peaks kept a flexibility premium intact. Croatia spent €170 million to suppress winter energy prices, delaying a market reset on September 12, 2026. Montenegro’s Pljevlja was described as supplying 65% of EPCG summer generation as drought hit hydro on September 11, 2026.
Hydrology and river conditions also featured in power operations. On September 11, 2026, Hungary faced record-low Danube levels that forced emergency dredging at a Budapest power plant. A hydro rebound widened Bulgaria’s electricity surplus on September 10, 2026. Greece planned a €5 billion energy package targeting a 30% reduction in power prices on September 10, 2026.
Additional electricity-related items included Montenegro planning a €50 million World Bank-backed transition project for Pljevlja on September 9, 2026. Greece secured €2.3 billion for island grids, renewables and storage on September 8, 2026. Bosnia’s power import bill was reported to have doubled as coal and hydro output weakened on September 7, 2026.
Nuclear outages and grid constraints affecting supply
Nuclear developments in the period centered on Romania’s Cernavodă restart timing. Coverage said Romania faced a prolonged nuclear outage as low Danube levels delayed the restart of Cernavodă on September 11, 2026. It also reported that Romania pushed the restart beyond mid-September as the drought persisted. ABB was selected for a Cernavodă Unit 1 control-system overhaul on September 7, 2026.
Nuclear coverage also extended beyond Romania. Hungary’s Paks II nuclear project was reported could slip to 2035 on September 10, 2026. Slovenia reshuffled GEN leadership as investment decisions for Krško 2 approached on September 8, 2026.
Batteries and solar projects expand across the region
Batteries and solar projects were among the most prominent renewables developments during the week. Engie added a four-hour Calan battery to Romania’s storage pipeline on September 7, 2026. Econergy started a 70 MW battery at a Romanian solar project on September 11, 2026. OKTA added a 3 MW battery to a North Macedonia solar plant on September 9, 2026.
The period also included new construction activity tied to import exposure in Montenegro. Kapino Polje construction started cutting Montenegro’s reliance on volatile imports on September 12, 2026. Fortis advanced a 300 MW Serbian solar portfolio to ready-to-build stage on September 10, 2026.
Solar generation performance was also reported for Albania’s Voltalia asset. Voltalia’s Karavasta solar output held steady at 132 GWh in the first half of the year on September 9, 2026. Greek regulator coverage examined solar output cuts during negative-price hours on September 10, 2026.
Wind expansion milestones and turbine supply contracts
Wind developments included equipment supply and project timelines across multiple markets. Enercon was set to supply 7-MW turbines for Qair’s Romanian wind project on September 10, 2026. Bosnia and Herzegovina’s Hrgud wind project faced another delay after a tender appeal on September 10, 2026.
EPCG advanced its Gvozd 2 wind expansion in Montenegro with an investment figure of €26 million, reported on September 8, 2026. Romania’s Green Breeze wind farm with capacity of 99.2 MW was described as approaching commercial operation on September 7, 2026.
Southeast European gas flows: LNG risks and corridor integration
The gas segment covered LNG-related risks and regional infrastructure integration affecting Balkan supply routes. Albania LNG planning was reported to potentially redraw Balkan gas flows and challenge Greek supply routes on September 12, 2026. Bulgaria’s Bulgargaz disclosed BOTAS LNG volumes while contract costs remained hidden on September 11, 2026.
A Europe-wide price context was also cited in relation to market risk factors. Gas prices were reported to have hit their highest level since 2022, with Hormuz risks growing on September 11, 2026. Another item said European gas surge widened Bulgaria’s price advantage as SEE autumn risks rose on September 8, 2026.
The week also included market-building steps for organized trading and corridor participation. North Macedonia assigned MEMO to build an organised gas market on September 7, . Serbia and North Macedonia joined the Vertical Gas Corridor as Balkan gas integration widened on September 7, . EU coverage said it held off additional gas measures despite lower storage levels on September .
T trading shifts: CBAM costs and certificate rules reshape flows
T trading-focused reporting concentrated on CBAM impacts and changes tied to guarantees of origin recognition for renewable certificates. On September , coverage said CBAM turned the EU electricity border into a carbon-adjusted trading market. It also said EU GoO recognition opened a renewable certificate market but did not solve CBAM issues for Southeast Europe electricity trade on September . Separate coverage said EU reform could cut punitive CBAM default factors for Balkan electricity on September .
The CBAM cost implications were quantified in regional reporting during the week. Serbian electricity faced a €78/MWh CBAM default cost as an actual-emissions route tightened on September . Western Balkan-EU electricity trade remained reported at 19% lower as CBAM redrew regional routes on the same date range ending with those CBAM updates.
Cross-border trade movements were also tracked through exports northward toward Ukraine. Coverage said Serbia-Hungary exports doubled as electricity moved north toward Ukraine on September . Another item said EU guidance turned renewable electricity exports into an hourly evidence business during the period ending with those updates.
Bidding volumes and day-ahead price moves across exchanges
The trading section included exchange volume changes and day-ahead price movements by country during August and early autumn sessions. North Macedonia power-exchange volumes jumped by 58%% year-on-year in August according to reporting dated September . Hungary’s HUPX August power price rose by 24%% as day-ahead volumes increased in another report dated September . Bulgarian day-ahead trading rose as August power prices jumped in coverage dated September .
Larger price swings were also cited for Romania and Serbia within day-ahead markets. Romanian day-ahead power price jumped by 26%% in August in reporting dated September . Serbia power price plunged to €109/MWh, with SEE markets diverging from Italy in another report dated September .
Batteries entering balancing trade alongside demand shifts
The week also included balancing-trade developments linked to renewables growth and storage assets entering operations more deeply into system balancing markets. Coverage said renewables moved deeper into SEE balancing trade as batteries challenged thermal flexibility on September . It also highlighted that weaker industry may cap SEE baseload demand despite autumn energy-price rises.
A separate set of items focused specifically on seasonal effects for solar capture prices and scarcity patterns around evenings. Shorter autumn days were described as potentially lifting solar captured prices while deepening evening scarcity in reporting dated September . Another item said SEE power premiums were expected to persist as autumn exposed cross-border bottlenecks.
The same period included references to zero-price solar hours and scarcity levels in evening periods for SEE power markets dated early in the week ending with those updates—described as zero-price solar hours alongside €200-plus evening scarcity in reporting dated September .
M&A pipelines and generation diversification initiatives in Serbia
A set of policy-leaning items focused specifically on Serbia’s renewables pipeline development through corporate procurement channels. EPS opened a renewable M&A channel for Serbian wind, solar and hybrid projects according to reporting dated September . The same stream included EPS seeking private renewable projects as Serbia accelerated generation diversification dated earlier within the period starting with that most-read item listed for Septe mber .
A related development connected Serbia with regional gas integration efforts already covered within corridor updates during the week ending with those integration items dated Sept ember . The period also included Fortis advancing its Serbian solar portfolio toward ready-to-build status dated earlier within this timeframe.
Drought-driven adequacy concerns alongside grid bottleneck warnings
Drought conditions were linked to adequacy outlook changes affecting Southeast Europe into winter within market coverage dated later in the week ending with those updates. Summer drought overturned Europe’s comfortable adequacy outlook leaving SEE exposed into winter according to reporting dated Sept ember . Southeast Europe grid bottlenecks were described as threatening new price shocks despite rising renewable capacity in reporting dated Sept ember .
Bulgaria’s participation in balancing integration was also highlighted during this period ending with those updates—reported as European balancing integration advancing as Bulgaria joined MARI while SEE flexibility moved toward a common market dated Sept ember . Another item placed Romania within regional gas transit constraints by saying Romania emerged as Balkan gas transit bottleneck as Hungary link hit capacity dated Sept ember .
Croatia household support scheme alongside petrol-diesel caps
Croatia-specific policy measures appeared across both retail energy support and fuel pricing controls during the week. Croatia opened a €38 million household energy scheme with battery support dated Sept ember . Separately, Croatia extended petrol and diesel price caps as wholesale costs rose according to reporting dated Sept ember .
Croatia’s winter energy-price suppression measure was also part of this policy cluster during later-week electricity coverage described earlier—Croatia spending €170 million to suppress winter energy prices while delaying market reset dated Sept ember .
LNG volumes disclosure and LNG shock exposure into autumn
LNG-related exposure continued through autumn-focused gas coverage within the period ending with those updates. SEE gas entered autumn above €70/MWh after summer LNG shock and weak storage build according to reporting dated Sept ember . Another item said SEE gas entered autumn with supply routes stronger but prices exposed to LNG shock—also dated Sept ember
