Claire Coutinho has vowed to continue her campaign over alleged grid security breaches at NESO during a heatwave in June. A NESO significant event report written hours after the incident stated that system constraints were breached and system security was compromised, the Times reported. Coutinho said NESO “has not provided any subsequent assessment to contradict” its initial findings. But on 15 July, Coutinho described the NESO investigation as a “sham” because the investigations’ terms excluded the central question of grid security. This story has been updated with comments from the Department for Energy Security and Net Zero and NESO.