French Power Imports Prevented British Grid Blackout During June 2026 Heatwave

2026年6月23日，在极端热浪侵袭下，英国国家电网频率一度跌至49.657赫兹，逼近49.5赫兹的法定下限，险些触发轮流停电。这场危机的主因是当时有高达21.2吉瓦的发电装机容量脱网，其中包括12.6吉瓦的计划性检修和8.6吉瓦的非计划停运；与此同时，燃气发电受限，多条跨国电网互联线路也处于离线状态。随着欧洲各地傍晚光伏发电量下降，英国输电运营商国家能源系统运营商（NESO）紧急叫停电力出口，转而从法国进口水电与核电，从而化解了电网瘫痪危机。

On June 23, 2026, Britain's national electricity grid narrowly avoided rolling blackouts during an intense heatwave after grid frequency dropped to 49.657 Hz, approaching the statutory 49.5 Hz threshold. The crisis stemmed from 21.2 GW of generating capacity being offline—comprising 12.6 GW of scheduled maintenance and 8.6 GW of unplanned outages—alongside curtailed gas generation and offline interconnectors. A blackout was averted after transmission operator NESO halted power exports and imported hydro and nuclear power from France when evening solar generation declined across Europe.