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Western Power Distribution was a subsidiary of PPL for many years. [5] In August 2020, PPL announced an intention to sell WPD. [6] In March 2021, PPL announced a swap with National Grid in which it divested WPD and acquired Narragansett Electric of Rhode Island. [7]
During 2021, interconnectors provided 28TWh of electricity to the UK, which equates to 10% of total demand, whilst in 2009 this figure was 7TWh. [ 1 ] Interconnectors allow the trade of electricity between countries with excess renewable generation and those with high demand.
The National Grid is the high-voltage electric power transmission network supporting the UK's electricity market, connecting power stations and major substations, and ensuring that electricity generated anywhere on the grid can be used to satisfy demand elsewhere. The network serves the majority of Great Britain and some of the surrounding islands.
The substations and the grid operated at 132 kV and provided local and regional inter-connections. [1] Higher voltage substations were built as part of the super-grid designed for the bulk transfer of electricity which began to operate from 1953, firstly at 275 kV then from 1965 additionally at 400 kV. [ 2 ]
National Grid plc is a British multinational electricity and gas utility company headquartered in London, England. Its principal activities are in the United Kingdom, where it owns and operates electricity and natural gas transmission networks, and in the Northeastern United States, where as well as operating transmission networks, the company produces and supplies electricity and gas ...
The National Energy System Operator (NESO) is the nationalised energy system operator for the United Kingdom. Previously owned by National Grid plc, when it was known as National Grid ESO, it is a publicly owned organisation which operates both the electricity transmission and gas distribution systems from 1 October 2024.
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The 260 km (160-mile) long bi-pole 450 kV interconnector consists of two HVDC cables, which are bundled together. The capacity of the cable is 1,000 MW. The interconnector has two converter stations for connecting the link with the British and Dutch high-voltage electricity transmission systems. [7]