NESO technical report on system operation during extreme heat: comment

Jess Ralston is available for further comment and interview.

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By Jess Ralston

info@eciu.net

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Commenting on the National Energy System Operator Review of Electricity System Operation during Extreme Heat 22–26 June 2026 published today (19 Oct) [1] Jess Ralston, analyst at the Energy and Climate Intelligence Unit (ECIU):

"The June events resulted from a combination of factors including record-breaking temperatures reducing gas power station availability, interconnector volatility and lower wind output. It's no secret that the energy system is changing and how it's managed is changing too - the tools NESO have available worked as intended and the system stayed stable. 
 
"Rather than supporting more dependence on gas, these events reinforce the need to reach net zero - the only solution to preventing further climate change - while investing in the grid to support a modern electricity system. Renewables and electrification are how we will get energy independence from actors like Putin, with gas volatility costing UK households thousands over back-to-back crises,
[2]meanwhile large wind lowered wholesale prices by a third last year." [3]