The National Energy System Operator (Neso) has issued an electricity margin notice for Wednesday evening as extreme temperatures and low wind conditions strain the national power grid.
Key points
- Temperatures in parts of England and Wales are forecast to reach 40C, prompting the Met Office to issue a rare red weather warning.
- The electricity margin notice, effective from 7pm to 10pm, is a routine intervention to ensure sufficient capacity is available.
- Extreme heat is reducing the efficiency of nuclear power stations, gas facilities, and water cooling systems.
- Major transport providers, including National Rail and Eurostar, have announced service cancellations and disruptions due to the adverse weather.
Why it matters
The rare grid intervention highlights the vulnerability of national infrastructure to extreme weather events, which are increasingly impacting public services and transport networks.
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