Networks
National Grid's outlook for the coming winter is somewhat more positive in capacity terms than in previous winters, with a capacity margin of 6.2 GW or 10.3%. "We are confident that we have the right products and strategy in place to help us to [...]
Last week, National Grid announced a rationalisation of its frequency response balancing services as part of its wider review of the needs of the electricity system. As the electricity system becomes more decentralised with an increasing contribution from intermittent sources of generation, the traditional methods [...]
Last week saw the news that National Grid has successfully trialled a method of measuring the inertia of the electricity system in real time. This may seem like a technical curiosity, but it has major implications for system management. What is inertia…… Electrical inertia [...]
Existing power grids were designed to transmit electricity over relatively short distances, however, increasingly grids are required to supply major cities from remote offshore wind farms at the same time as integrating local generation. With generators feeding variable amounts of energy from renewable sources [...]
The first sections of the new electricity interconnector between the UK and Belgium were installed this month with the laying of the first 59km section of the Nemo Link, a joint venture between the UK's National Grid and Belgium's Elia System Operator, between the [...]
On the 12th July, Ofgem issued an open letter launching the process for establishing the next round of price controls, known as "RIIO-2", for the GB gas and electricity systems. These price controls determine the amount of allowable expenditure for network companies (which includes [...]
In its Future Energy Scenarios, National Grid presents its views of the future of the GB energy system, which I have described here. As I was exploring the scenarios, I was struck by some surprising features of the scenarios, in particular that three of [...]
The UK electricity system was designed to transport electricity produced in a relatively cheap and predictable way from centralised power stations, to users whose patterns of consumption are similarly stable and predictable. Variations around these patterns of production and consumption were typically small, and [...]
The German electricity system has been celebrating record levels of renewable generation, with 85% of the electricity consumed in the country on 30 April coming from renewable sources. However, this high level of renewable energy is not without cost in terms of grid stability, [...]
Transmission charging is far from simple even in the traditional model of electricity networks, as illustrated by the diagram below. In principle, the costs of bringing electricity from large units of generation to consumers is socialised across users via three main tariffs: Transmission Use of [...]