Networks
There are signs of squeezed power market supply and demand margins. Last week saw National Grid ESO issue two Electricity Margin Notices (the new name for the Notice of Inadequate System Margin, or “NISM”), warning of a potential shortfall in electricity generation in the [...]
National Grid has launched a new frequency response service: Dynamic Containment, designed to provide sub-second response to faults which cause a significant deviation in the electricity system frequency. According to National Grid ESO: “Currently, the electricity system is experiencing lower inertia and larger, more [...]
As the country largely remains locked down, electricity demand continues to be low, and renewable generation high, particularly in the current sunny weather. This is creating challenges for National Grid ESO in balancing the electricity system, and so it is introducing new tools to [...]
In 2019 the GB market went a total of 18 consecutive days without any coal contributing to demand and 83 days without coal throughout the year as a whole. This was hailed as a great turning point and a sign that soon there would be [...]
As we all enter the second week of the covid-19 lockdown, what is the impact of the crisis on the gas and electricity sectors?Retail markets: changing usage patterns and an increase in consumer vulnerabilityMore consumers are now vulnerableOne of the more urgent aspects of the [...]
Last week I had the pleasure of being one of the keynote speakers at the Institute of Directors Guernsey Branch annual convention, speaking about energy policy options for the Bailiwick in the context of climate ambitions. The day before, the States had published a [...]
Ofgem is in the process of reforming the way in which users pay for access to and use of electricity networks, which I have described in previous posts here and here. The Targeted Charging Review is the more advanced project and is tackling reform [...]
Ofgem has now published National Grid’s technical analysis of the 9 August blackout. Much of the meat is contained in the appendices. The report does not answer many of the questions that have been asked in relation to the incident, and throws up a [...]
National Grid has now published National Grid ESO’s initial report into the 9 August blackout. The extremely repetitive 26-page report sheds some new light onto the events on the day (and I was rather gratified to see that my hunch relating to Hornsea tripping [...]
Since Friday’s blackout, there have been press reports that National Grid has presided over three “near-miss” situations where system frequency fell close to the lower frequency tolerance of 49.5 Hz, 1% below the target level of 50 Hz. National Grid responded to these reports, [...]