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Iran Conflict 2026
21SEP

GB exports gas; Hungary clears €123

3 min read
15:34UTC

National Gas flagged GB summer exports to the continent in its 2026 Summer Outlook; Hungary cleared €123.23/MWh day-ahead on Tuesday 12 May, €54 above Spain's same-day print and the series' widest single-market premium.

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Key takeaway

GB exports help the continent; Hungary's €123 print exposes central Europe's structural disconnect from Atlantic LNG.

National Gas, the UK gas transmission system operator, published its 2026 Summer Outlook indicating GB will export gas to the continental European market this summer, with flows broadly in line with 2025. Centrica Rough's seasonal operating mandate expired on Thursday 30 April with no successor arrangement. The export signal sits against the BBL and IUK interconnector capacity reductions flagged earlier : GB exporting during peak EU injection season partially offsets the Norway and LNG deficit on continental markets.

Hungary cleared €123.23/MWh day-ahead on Tuesday 12 May, €54 above Spain's same-day print , the largest single-market premium recorded this series, marking central European price isolation from Atlantic LNG flows. ACER's Opinion 06/2026 recommends granting Hungary and Serbia a Kiskundorozsma-1 interconnector capacity-allocation derogation; the European Commission decision window closes 5 August 2026, with no Commission response in the 12-18 May window. The opinion sits inside the same Hungary regulatory dossier as the CJEU challenge filed 2 February , giving a concrete forward milestone for EU-Hungary gas infrastructure relations.

Deep Analysis

In plain English

Britain is set to export some of its gas to Europe this summer, which helps European storage fill faster. In a separate development, Hungary's electricity prices on 12 May were €54 higher per megawatt-hour than Spain's on the same day. That gap shows how poorly connected Hungary is to the rest of Europe's electricity grid: when it needs power, it can't easily import it from neighbours, so prices spike.

Deep Analysis
Root Causes

Hungary-Austria cross-border electricity interconnection operates below the thermal capacity of the physical line because Mavir and APG have not exhausted available Coordinated Capacity Calculation (CCC) coordination under CACM, meaning administrative and regulatory constraints reduce available capacity below physical limits.

Hungary's gas-fired generation fleet runs on spot gas rather than contracted pipeline gas in the summer period, directly exposing the day-ahead power clearing price to TTF spot moves; at €50/MWh TTF, gas-fired CCGT marginal cost in Hungary sits above €90/MWh at current thermal efficiency.

What could happen next?
  • Meaning

    ACER's Kiskundorozsma-1 capacity allocation derogation recommendation (Opinion 06/2026) addresses the Hungary-Serbia interconnection gap; if the Commission approves it before 5 August, it modestly increases Hungary's interconnection options from the south.

    Short term · Assessed
  • Meaning

    The EUR 54 Hungary-Spain spread will appear in the next ACER monitoring report on market integration; sustained cross-border price differentials above EUR 20/MWh for more than 10% of trading hours trigger a formal ACER market integration review under the Electricity Regulation.

    Short term · Assessed
  • Meaning

    GB summer gas exports via the Interconnector reduce the net LNG import requirement for Continental storage, marginally improving the injection-pace arithmetic at the European aggregate level without affecting the headline AGSI+ daily storage figures directly.

    Short term · Assessed
Sources:ACER·ACER
Mentions:National Grid →Serbia →Norway →Spain →Texas →Austria →Sweden →LNG Prime →BBL →IUK →Hungary →European Commission →ACER →Centrica Rough →Kiskundorozsma-1 →Opinion 06/2026 →
First Reported In

Update #10 · TTF breaks EUR 50; US LNG hits 58% of imports

ACER· 18 May 2026
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Causes and effects
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