Several reports say MPs hear claims that the UK electricity grid nearly failed during the 23 June heatwave. The Daily Mail reports that Shadow energy secretary Claire Coutinho told Parliament that grid operators indicated the network did not meet required standards on that date. The allegation is linked to high temperatures of around 34°C, when demand and operating conditions are reported to have tested the system. According to the account, Coutinho referenced operator statements and used the episode to raise concerns about whether the grid can maintain necessary performance during extreme weather. The reporting focuses on the parliamentary remarks and the specific claim that standards were not met during the heatwave. Across the available sources, the core points remain the same: the date of 23 June, the approximate temperature of 34°C, and the assertion that operators said the grid fell short of standards. The sources provided do not include details from the operators themselves or additional findings on whether any outages occurred.