National Grid And SSEN Transmission Agree Joint Venture For UK’s Largest Ever Electricity Transmission Project
The title of this post is the same as that of this press release from National Grid.
This is the sub-heading.
Joint Venture Agreement Important Milestone In Subsea Electricity Superhighway – Eastern Green Link 2
These four paragraphs outline the project.
National Grid Electricity Transmission (NGET) and SSEN Transmission have taken a big step forward in the development of a new subsea electricity superhighway project along the east coast of Scotland after reaching agreement on the terms of their joint venture (JV).
The ‘Eastern Green Link 2’ (EGL2) project will see the creation of a 525kW, 2GW high-voltage direct current (HVDC) subsea transmission cable from Peterhead in Scotland to Drax in England. The UK’s single largest electricity transmission project ever.
The subsea HVDC cable system is approximately 436km in length with new converter stations at either end to connect it into the existing transmission network infrastructure. HVDC technology provides the most efficient and reliable means of transmitting large amounts of power over long distances subsea.
The EGL2 link will support the growth of new renewable electricity generation, creating jobs and delivering a pathway to net zero emissions targets, as well as helping to alleviate existing constraints on the electricity network.
The Wikipedia entry for Eastern HVDC has a detailed description of the two 2GW Scotland-England interconnectors, that are planned.
This is the first section.
Eastern HVDC and Eastern HVDC projects are the names used by Ofgem for two planned HVDC submarine power cables from the East coast of Scotland to Northeast England to strengthen the National Grid. The two links combined will deliver 4 GW of renewable energy from Scottish wind farms to England.
Ofgem state that “At an estimated cost of £3.4 billion for the two links, the Eastern HVDC projects would be the largest electricity transmission investment project in the recent history of Great Britain.
The Project Background Document for SEGL1 can be viewed here.
EGL2 also has its own web site.
Green Light For Orkney Transmission Link
The title of this post, is the same as that of this news item from SSE.
These three paragraphs outline the project.
SSE’s Transmission business, SSEN Transmission, has welcomed today’s publication by Ofgem in which the energy regulator has provisionally approved long awaited and much needed plans to provide a subsea electricity transmission link to Orkney.
The Orkney Islands are home to some of the world’s greatest resources of renewable electricity, from established onshore wind, to emerging marine technologies, where Orkney is at the forefront of global developments in marine energy generation.
Following significant growth in small-scale renewable electricity generation in Orkney, the local electricity network has long been at full capacity and no new electricity generation can connect without significant reinforcements.
This paragraph describes the scope of the project.
SSEN Transmission’s proposed solution would enable the connection of up to 220MW of new renewable electricity and consists of a new substation at Finstown in Orkney, and around 57km of subsea cable, connecting to a new substation at Dounreay in Caithness.
200 MW seems a good return for a substation and forty miles of cable.
Ofgem OKs Transmission Investments Needed For UK’s 2030 Offshore Wind Target
The title of this post, is the same as that, of this article on offshoreWIND.biz.
This is the sub-heading.
Ofgem has approved the strategic electricity transmission reinforcements required to deliver the UK Government’s 50 GW offshore wind by 2030 target, set out as part of the regulator’s Accelerated Strategic Transmission Investment (ASTI) framework.
A map then shows the principle new transmission reinforcements.
These include two 2 GW subsea HVDC links from Peterhead to England, both of which will be taken forward as joint ventures with National Grid Electricity Transmission (NGET), a 2 GW subsea HVDC link from Spittal in Caithness, connecting to Peterhead, as well as a 1.8 GW subsea HVDC link from Arnish on the Western Isles to the Beauly area near Inverness.
The approval also implies 400 kV onshore reinforcements, between Beauly, Blackhillock, New Deer and Peterhead; between Beauly, Loch Buidhe and Spittal; and between Kintore, Tealing and Westfield; and uprating the existing Beauly to Denny line to enable 400 kV operation on both circuits.
All cables seem to lead to Peterhead.
The Anonymous Widower 