Grain LNG Launches Market Consultation For Existing Capacity
The title of this post is the same as that of this press release from National Grid.
This is the sub-heading.
Grain LNG, the largest liquefied natural gas (LNG) terminal in Europe, is pleased to announce the launch of a market consultation for the auction of 375 Gwh/d (approx. 9 mtpa) of existing capacity. The initial consultation phase for the Auction of Existing Capacity will commence on 14 June and run until 26 July.
These paragraphs detail what Grain LNG, which is a subsidiary of National Grid are offering.
GLNG has used the positive feedback received from the recent ‘Expression of Interest’ exercise and subsequent market engagement to offer three lots of capacity:
- Each lot will be entitled to 42 berthing slots, 200,000 m3 of storage and 125GWh/d (approx. 3 mtpa) of regasification capacity from as early as January 2029.
- This product is specifically designed for parties who wish to acquire a substantial stake in a major terminal in Northwest Europe, at a reduced cost and with shorter contract lengths when compared to new-build projects.
- As the terminal’s capacity already exists, parties involved will not be subjected to the FID approvals or potential delays that can arise from construction issues commonly associated with new build terminals.
Simon Culkin, Importation Terminal Manager at Grain LNG, said: “We are really pleased with the high level of interest shown by the market at a time of significant geo-political influence on our energy markets. It has allowed us to engage with potential customers and shape our offering to best meet their needs, whilst optimising access to this strategic asset. “
Reading the Wikipedia entry for the Grain LNG Terminal, it looks like it gets used as a handy store for natural gas.
About Phase 1 (2002–05), Wikipedia says this.
The new facilities enabled the Grain terminal to become a base supply to the NTS, with the ability to deliver gas continuously when required. The cost of the Phase 1 project was £130m. A 20-year contract with BP / Sonatrach enabled Grain LNG to import LNG on a long-term basis from July 2005.
About Phase 2 (2005–08), Wikipedia says this.
The development provided an additional five million tonnes of capacity per annum. All this capacity was contracted out from December 2010. Customers included BP, Iberdrola, Sonatrach, Centrica, E.ON and GDF Suez.
Under Current Facilities, Wikipedia says this.
Grain LNG Ltd does not own the LNG or the gas that it handles but charges for gasifying it. Current (2016) users include BP, Centrica (British Gas Trading), Iberdrola (Spain), Sonatrach (Algeria), Engie (France), and Uniper (Germany).
National Grid must be pleased that some customers seem loyal.
I feel that National Grid’s basic plan is to carry on with more of the same.
But will they develop more storage and other facilities on the site.
There are certainly other projects and interconnectors, that make the Isle of Grain and energy hub connecting the UK, Netherlands and Germany.
- In Did I See The UK’s Hydrogen-Powered Future In Hull Today?, I mentioned, that I thought that the Isle of Grain could be a location for an electrolyser and a hydrogen store.
- In EuroLink, Nautilus And Sea Link, I talk about new interconnectors, if which Nautilus might come to the Isle of Grain.
- In UK-German Energy Link Reaches Financial Close, I talk about NeuConnect, which will be an interconnector between the Isle of Grain ans Wilhelmshaven in Germany.
- The Isle of Grain is the landing point for the BritNed undersea power cable between The Netherlands and the UK.
I could also see National Grid building an East Coast interconnector to bring power from the wind farms off the East Coast of England to the Isle of Grain for distribution.
These are major wind farms South of the Humber.
- Dudgeon – 402 MW
- East Anglia 1 – 714 MW
- East Anglia 1 North – 800 MW
- East Anglia 2 – 900 MW
- Galloper – 504 MW – RWE
- Greater Gabbard – 504 MW
- Gunfleet Sands – 174 MW
- Hornsea 1 – 1218 MW
- Hornsea 2 – 1386 MW
- Hornsea 3 – 2852 MW
- Humber Gateway – 219 MW
- Lincs – 270 MW
- London Array – 630 MW
- Lynn and Inner Dowsing – 194 MW
- Race Bank – 580 MW
- Scroby Sands – 60 MW
- Sheringham Shoal – 317 MW
- Triton Knoll – 857 MW – RWE
- Dogger Bank A – 1235 MW
- Dogger Bank B – 1235 MW
- Dogger Bank C – 1218 MW
- Dogger Bank D – 1320 MW
- Dogger Bank South – 3000 MW RWE
- East Anglia 3 – 1372 MW
- Norfolk Boreas – 1396 MW
- Norfolk Vanguard – 1800 MW
- Outer Dowsing – 1500 MW
- North Falls – 504 MW – RWE
- Sheringham Shoal and Dudgeon Extensions – 719 MW
- Five Estuaries – 353 MW – RWE
Note.
- These figures give a total capacity of 28,333 MW.
- Five wind farms marked RWE are owned by that company.
- These five wind farms have a total capacity of 5618 MW.
- Will RWE export, their electricity to Germany through NeuConnect?
I can certainly see National Grid building one of the world’s largest electrolysers and some energy storage on the Isle of Grain, if an East Coast Interconnector is built.
Gresham House Energy Storage Sets GBP80 Million Fundraise
Gresham House Energy Storage Fund must be doing something right, as similar headlines are used in half-a-dozen places on the Internet and they regularly seem to be raising more money.
But then, as a Graduate Control Engineer and a previous owner of half a finance company, I’ve always thought raising money to build batteries was a good idea.
My only niggle with Gresham House, is that I would have thought by now, they would have put some money into building one of the excellent new technology batteries that are coming through.
The storage fund or some of its employees, may of course have contributed to some of the crowdfunding for these new technologies, all of which I feel have a good chance of being a success.
Note.
- Energy Dome is Italian and all the others are at least fifty percent British.
- Most of the British batteries have had backing from the UK government.
- All these batteries are environmentally-friendly.
- None of these batteries use large quantities of rare and expensive materials.
- Energy Dome even uses carbon dioxide as the energy storage medium.
In addition, in Scotland, there is traditional pumped storage hydro-electricity.
Project Iliad
This article on renews.biz has a slightly different headline of Gresham House To Raise £80m For US Battery Buildout.
This is the first two paragraphs.
Gresham House Energy Storage Fund is seeking to raise £80m through a share placing.
The new equity raised will primarily be used to finance 160MW of solar with co-located four-hour battery projects in California, US, known as Project Iliad.
The article then gives a lot of financial details of Project Iliad and Gresham House.
Will Gresham House be backing co-located solar/battery projects in the UK?
- In Cleve Hill Solar Park, I write about a co-located solar/battery project in Kent.
- This press release from National Grid is entitled UK’s First Transmission-Connected Solar Farm Goes Live, which also describes a co-located solar/battery project, being built near Bristol.
These two projects are certainly serious and could be pathfinders for a whole host of co-located solar/battery projects.
WillGresham House back some of this new generation?
Ireland To Develop National Industrial Strategy For Offshore Wind
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Ireland’s Minister for Enterprise, Trade and Employment, Simon Coveney, has announced plans to develop a National Industrial Strategy for Offshore Wind which will set out how Ireland can maximise the economic opportunity arising from the production of offshore wind energy
Ireland’s current objectives for offshore wind are.
- To deliver 5 GW of offshore wind by 2030.
- A further 2 GW of floating wind to be in development by 2030.
- The target for offshore wind could rise to at least 37 GW by 2050.
- There is a target to provide 80 per cent of the country’s electricity to be from renewable sources by 2030.
The government appears to recognise collaborative approach between state and industry is needed.
Nothing is said about co-operation with Northern Ireland or the UK.
This is despite.
- UK and Irish companies like ESB, Flotation Energy, Simply Blue Group and SSE have projects in both countries.
- Irish company; ESB is developing the Malin Sea Wind wind farm in Scottish waters and landing the electricity near Derry City.
- Scottish company; SSE is building biomass power stations in Ireland.
- Some promising waters for wind power are shared between the two countries.
- There are three interconnectors between the two main islands.
I would expect that there could be some multi-purpose interconnectors across the Irish and Celtic Seas.
These would connect windfarms between the islands to both the UK and Ireland. National Grid and TenneT are building the LionLink between England and The Netherlands, which I wrote about in World’s Largest-Of-Its-Kind Power Line To Deliver Clean Power To 1.8m UK Homes And Boost Energy Security.
I very much feel, that there will be a lot of co-operation between the UK and Irish governments as if they work together, the development of Ireland’s offshore wind and that of the West Coast of the UK could be more efficient.
World’s Largest-Of-Its-Kind Power Line To Deliver Clean Power To 1.8m UK Homes And Boost Energy Security
The title of this post, is the same as that as this press release from the UK Government.
These are the three bullet points of the press release.
- LionLink power line between UK and Netherlands will deliver enough electricity to power more homes than Manchester and Birmingham combined.
- Agreement made as Grant Shapps leads delegation of leading businesses to key North Sea Summit.
- Part of renewed Government drive to work with business to help grow the economy.
These three paragraphs outline the project.
The world’s largest multi-use electricity power line will be built under the North Sea, boosting UK energy supplies with enough to power 1.8 million homes – more than Birmingham and Manchester combined.
The new LionLink will connect the UK and the Netherlands with offshore wind farms, providing clean affordable and secure energy to Britain which will help cut household bills and drive Putin’s Russia further out of the energy market.
The cross-border electricity line will be only the second of its kind in the world, with the first having been built by Germany and Denmark. However, it will be able to carry more than four times the amount of electricity as its predecessor – making it the largest of its kind in terms of capacity anywhere in the world.
Note.
- I suspect the LionLink will go via the Dogger Bank, where Danish, Dutch, German and UK territorial waters meet an we are already building 8 GW of fixed foundation offshore wind. The other countries are also active in the area.
- The press release doesn’t mention, where the LionLink will make landfall in the UK.
- Much of the connection will probably use the cables being laid for the Dogger Bank wind farms.
- There is also no mention of the North Sea Wind Power Hub, which could be an artificial island on the Dogger Bank.
There is also a press release on the National Grid web site, which is entitled National Grid And TenneT Collaborate On Proposed First-Of-A-Kind Anglo-Dutch Electricity Link, which gives more details.
- The capacity is stated to be 2 GW.
- Like the current BritNed interconnector, the project will be a cooperation between National Grid And TenneT.
- TenneT is a limited liability company owned by the Dutch government, that is a transmission system operator in the Netherlands and in a large part of Germany.
There is also a diagram, showing how the LionLink will work, which includes these components.
- On the Dutch side, there is an offshore AC>DC Converter Station, which is connected to the Dutch electricity grid and one or more offshore wind farms.
- Across the border between the Dutch and UK Exclusive Economic Zones, there will be a HVDC cable.
- The HVDC cable will terminate in an onshore DC>AC Converter Station in the UK, which will be connected to the UK electricity grid.
No details of the two landfalls have been given.
More information is given in this article on offshoreWIND.biz, which is entitled UK And Netherlands Unveil Multi-Purpose Interconnector Plans.
- This shows a map of the North Sea with an interconnector running in a straight line between possibly Rotterdam and Bacton in Norfolk.
- A wind farm is shown connected to this interconnector.
This paragraph describes the windfarm and the interconnector.
LionLink, a multi-purpose interconnector that was announced today at the North Sea summit, could connect a Dutch offshore wind farm with a capacity of 2 GW to both countries via subsea interconnectors.
If the wind farm has a capacity of 2 GW, I would assume it can supply up to 2 GW to the UK and The Netherlands.
This is a classic system, that can be optimised by the application of sound principles.
All electricity generated by the wind farm must be used, stored or converted into green hydrogen.
Electricity will be distributed as to need.
Energy storage or electrolysers could be sited at either end or even in the wind farm.
I would suspect that more wind farms could be connected to the interconnector.
The team, that write the control system for the grid will have a lot of fun!
BritNed
I have a feeling that National Grid and TenneT have taken a long hard commercial look at the electrical and financial performance of BritNed over the last year and decided, that a second connection would be to the mutual benefit of both companies, their customers and the UK and The Netherlands in general.
It would also be twice as difficult for terrorists sponsored by Putin to cut two cables.
Conclusion
This is a great leap forward for wind power in the North Sea and Europe.
National Grid Energise World’s First T-Pylons
The title of this post, is the same as that of this press release from National Grid.
These are the four bullet points.
- Electricity is flowing to homes and businesses through the first new pylon design in the UK for nearly 100 years.
- Major milestone in National Grid’s Hinkley Connection project to connect 6 million homes and businesses in the South West to home grown, low carbon energy.
- The T-design, with a single pole and cross shaped arms, is around a third shorter than the traditional design with a smaller ground footprint.
- The T-pylons, along with a new substation and underground cabling, are now incorporated into National Grid’s electricity transmission network delivering electricity in Somerset and across England and Wales.
This is the first paragraph.
National Grid has successfully energised 36 of the world’s first T-pylons between Bridgwater and Loxton in Somerset. The new shaped pylons have been constructed as part of the £900 million Hinkley Connection Project, a new 57 km high-voltage electricity line that will connect six million homes and businesses to new sources of home grown, low carbon energy and help the UK to meet its net zero by 2050 target.
There is a video in the press release, which is well worth a view.
- The size of the pylons certainly reduces their visibility.
- It appears there are seven cables on either side.
These pictures show the transmission lines to the Sizewell power station site.
Note.
- The lower height is very noticeable.
- There seem’s to be a lot more wires.
- I would assume, that the reduced number of components, reduces the cost of installation and maintenance.
The installation proved that even in the most mundane of applications, innovation can bring positive results.
The T-pylons are a design by Danish company; Bystrup.
This is the specification from their comprehensive web-page.
- Power – 2 x 400 kV
- Height – 35 metres / 114 feet
- Units/km – 3 (5 units/mile)
- Material – Hot-dip galvanised steel, painted
- Assembly – On-site and quick – less than 10 parts
- Installation – Simple monopile foundation
- Production possible anywhere in the world
- Developed – 2011-2014
They’ve also won several awards.
- 1st prize in int. competition for RIBA
- Nominated for the IET Innovation Award 2014
- Gold Prize, CIGRE Seoul 2017
- Award winner, UK Steel Awards (SSDA) 2017
I would hope to see more in the UK.
9 Energy, House And Rail Projects Planned For Norfolk
The title of this post, is the same as that of this article on the Eastern Daily Press.
The article is a survey of major projects across Norfolk.
Projects in the article with my thoughts will now be detailed.
Railway Village
This is described as follows in the article.
Plans to build a new 5,000-home town north of Dereham could take a significant step forward in 2023.
The proposals have been dubbed a ‘railway village’ and would lie close to the Mid Norfolk Railway at North Elmham.
The 1,278-acre site has been put forward by its owners as a potential area for development included in Breckland Council’s forthcoming local plan – a document detailing how the district should grow over the next two decades.
This map from OpenRailwayMap shows North Elmham and the Mid-Norfolk Railway.
Note.
- The yellow line is the Mid-Norfolk Railway.
- The site of the former North Elmham station is shown by the blue arrow at the top of the map.
- The orange line across the South-East corner of the map is the Breckland Line between Cambridge and Norwich.
- Wymondham station is on the Breckland Line, but trains between the Mid-Norfolk Railway and Norwich would be able to call at Wymondham station.
Wymondham station could be converted into a proper connection between the Breckland Line and the Mid-Norfolk Railway, with services being run between Norwich and North Elmham via Dereham.
In the Wikipedia entry for the Mid-Norfolk Railway, there is a section, which is entitled Community Railway, where this is the first paragraph.
The Mid-Norfolk Railway was established as a multi-functional line, with an intention to operate a community service in addition to tourist and freight services. The railway has also stated their belief that a commuter service between Dereham and Norwich remains a viable proposition, with the MNR either running the service themselves or working with an existing train operator. One obstacle on the MNR to running such services is the requirement to operate five manual gated level crossings between Dereham and Wymondham, although level crossing automation is a possibility in the future.
Later the section indicates that the Mid-Norfolk Railway could be extended to Fakenham.
This map from OpenRailwayMap shows the original route between North Elmham and Fakenham.
Note.
- The yellow line is the Mid-Norfolk Railway.
- North Elmham station is at the top of the yellow.
- Fakenham is at the top of the map.
Adding Fakenham to the passenger service from Norwich would surely increase its viability.
There have been ambitions in the past to create a Norfolk Orbital Railway, that would connect the National Rail stations at Sheringham and Wymondham, using the tracks of the North Norfolk Railway and Mid-Norfolk Railway, and some new and relaid track.
This map from OpenRailwayMap shows North Norfolk from Fakenham and North Elmham in the West to Sheringham in the East.
Note.
- Fakenham is on the Western edge of the map about halfway up.
- North Elmham is in the South-West corner of the map, on the yellow line, what indicates the Mid-Norfolk Railway.
- The railway shown in the North-West corner is the Wells and Walsingham Light Railway. which is a 260 mm. gauge railway.
- Sheringham station, which has an hourly service to Norwich via Cromer, is in the North-East corner of the map.
- The Eastern terminus of the North Norfolk Railway is a short walk from Sheringham station.
- The blue arrow to the West of Sheringham station, indicates the Western terminus of the North Norfolk Railway at Holt station.
The Norfolk Orbital Railway would need to connect Fakenham and Holt, which doesn’t appear to be easy.
But if the connection could be made, Greater Anglia could run a combined service around the county, which would allow those living in the houses at North Elmham to get easily to the coast or the City of Norwich.
Wash Barrage
This is described as follows in the article.
A bid to build a tidal barrage stretching from Norfolk to Lincolnshire was unveiled at the end of last year.
While the scheme has seen objections from conservation groups, proponents say it would help protect the Fens from flooding, generate tidal power and would allow a new deep-sea container port to be built.
A planning application has yet to be submitted for the scheme, which Centre Port, the group behind the proposal, said could be operational by the end of the decade if given the go-ahead.
The Wash Barrier has a web site, but I doubt the RSPB will like it.
New Reservoir
The article says that the proposed site is between Chatteris and March in Cambridgeshire.
Long Stratton Bypass
This is described as follows in the article.
The Long Stratton Bypass has been mooted for decades and finally looked like it was going to get underway after funding was approved in 2021.
The scheme will mean motorists can avoid passing through the centre of the town.
It was needed, when C regularly commuted to Norwich in the 1980s.
Norwich Western Link
This is described as follows in the article.
The flagship infrastructure project has been thrown into doubt after County Hall announced an indefinite delay earlier this month.
The 3.9-mile road is designed to link the A47 with the NDR to the west of the city and has been hailed as a council priority for several years.
Climate protestors are mounting a High Court challenge.
Windfarms
These are described as follows in the article.
There are a series of major windfarms planned for the Norfolk coast.
These include Swedish energy giant Vattenfall’s Boreas and Vanguard projects, which could be some of the largest in the world.
The company was granted development consent for its Norfolk Vanguard windfarm in 2022, pledging to get underway early this year.
The two schemes could power more than 3.9m homes in the UK.
Hornsea Three, another major scheme which could power another 3.2m homes, is set to start being built in March.
Note.
- The author missed out the Sheringham Shoal and Dudgeon Extension windfarms.
- Total wind power that will be developed is around 6 GW, which would supply around a quarter of the UK.
The only problem is that Norfolk is protesting against the cables to connect the wind farms to the National Grid.
I suspect they will have to be put under the sea. I wrote about this in Is There A Need For A Norfolk-Suffolk Interconnector?
New Rail Junctions
The problems around Ely station are described as follows in the article.
A key rail junction, which could help to boost growth across the region, could steam ahead this year.
Ely Junction is important because it links five lines connecting Norwich, Ipswich, Cambridge, Peterborough and King’s Lynn.
It is currently operating at full capacity, which limits the opportunity for growth of routes for passenger and cross-country freight services.
It would also enable more frequent passenger services, including between King’s Lynn and London.
An outline business case was submitted to the Department for Transport last year to seek money for the next stage of the design process – but the government has yet to make a decision.
There are also problems at Haughley Junction.
Hospitals Rebuild
The article also puts the case for developing both King’s Lynn and Great Yarmouth hospitals.
Conclusion
Norfolk is going to be busy.
Coal Sales Could Lose Tens Of Millions For Consumers
The title of this post, is the same as that of this article on The Times.
These two paragraphs outline the story.
A huge stockpile of coal bought for emergency use in power stations this winter is due to be resold at a loss of tens of millions of pounds to consumers.
National Grid funded the procurement of hundreds of thousands of tonnes of coal as part of a deal to keep open five coal-fired units this winter. The estimated £368 million cost of the “winter contingency contracts”, which includes an undisclosed sum for the coal purchases, is being recouped via energy bills.
Note.
- None of the coal has been burned, as the weather was warmer than expected,
- It is now sitting in various places around the country.
- It will probably sell at a loss and there will be transport costs.
I will look at the mathematics of disposal.
Burning Fossil Fuels
On the Internet, I have found these figures.
- If you burn a kilogram of natural gas you create 15.5 KWh of electricity and 2.75 kilograms of carbon dioxide.
- If you burn a kilogram of coal you create 2.46 KWh of electricity and 2.38 kilograms of carbon dioxide.
This means that natural gas and coal create 0.18 and 0.97 kilograms of carbon dioxide respectively for every KWh generated.
I believe these figures say, that if we have to use a fossil fuel, gas will be much better than coal for climate change reasons.
The Size Of The Problem
We are talking about 130,000 tonnes of coal for EDF and 400,000 for Drax. Uniper’s figure is not stated. Let’s say they make the coal pile up to 600,000 tonnes.
Burning this pile will generate 1,476,000 KWh or 1.476 GWh of electricity and create 1428,000 tonnes of carbon dioxide.
Effect On Total UK Carbon Dioxide Emissions
According to government figures on the Internet in 2021 we emitted 107.5 million tonnes of carbon dioxide.
Burning all that coal in a year, would add less than 1.5 % to our carbon dioxide emissions. Perhaps we should burn it strategically over a number of years, when there are energy supply problems, as it is after all a crude form of energy storage.
What Would I Do With The Savings?
The money saved on the transport and making loss-making sales could be spent on other ways to save carbon emissions, like converting surplus wind energy into hydrogen and blending it with the gas.
I discussed the mathematics of hydrogen blending in UK – Hydrogen To Be Added To Britain’s Gas Supply By 2025.
If we put 2 % hydrogen in our natural gas, this would save nearly 2.5 million tonnes of carbon dioxide emissions in a year. This figure is much bigger than the 1428,000 tonnes of carbon dioxide, that would be created by burning all the coal.
At a level of 2 %, most appliances, boilers and industrial processes would work without change. But a good service would help.
National Grid Goes Carbon-Free With Hydrogen-Powered Substation Trial
The title of this post, is the same as that of this press release from National Grid.
These are the main bullet points.
- Hydrogen powered unit (HPU) quietly provided carbon-free electricity to National Grid’s Deeside Centre for Innovation
- Only emission is water
- HPUs could save an estimated 500,000 kg of carbon across all National Grid substation sites
I am an Electrical Engineer and I had never realised that all those electricity substations around the country need a backup electricity generator.
These four paragraphs describe the trial and the generator used.
A GeoPura 250kW hydrogen power unit (HPU) contained within a transportable shipping container measuring 7.2 m by 2.5 m was installed at DCI and produced the energy to power low-voltage equipment needed for National Grid’s innovation testing projects and site operations. The trial tested the capabilities and feasibility of HPUs as direct replacements for backup diesel generators across more than 250 National Grid substation sites, the data will now be analysed and shared later this year.
National Grid currently use diesel generators alongside batteries to provide backup power to a substation for key activities such as cooling fans, pumps, and lighting, enabling it to continue to perform its crucial role in the electricity transmission system.
These backup generators are rarely used and have less than a 1% chance of operating per year, however, on the rare occasion that backup power is required, changing from diesel to low-carbon emission alternatives have the potential to reduce carbon intensity by 90%* and save over 500,000 kg of carbon emissions.
The HPU at Deeside has power capabilities of up to 100 kW in continuous operation mode and up to 250 kW for 45 minutes and uses 100% green hydrogen. The unit is quieter and the hydrogen cannisters used to fuel the generators can be safely stored on site.
I have some thoughts.
Deeside Centre For Innovation
The Deeside Centre for Innovation (DCI), a state-of-the-art testing facility hosting a 400 kV modified substation, designed as a unique environment for development and trial of innovative technologies and practices.
I think there’s something rather cunning about the DCI, as it means that anybody with a good idea will probably approach National Grid for help with the testing.
Visit Deeside Centre for Innovation for more information.
GeoPura
GeoPura has a totally zero-emissions answer to how we’re going to generate, store and distribute the vast amount of energy required to decarbonise our global economies. Or so their web site says!
This page on GeoPura’s web site, gives several case studies of how they work.
They would appear to provide zero-carbon power in widespread locations for Winterwatch, Springwatch etc. for the BBC.
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.
National Grid Avoids Emissions At London Power Tunnels Substation With Green Grid Technology
The title of this post, is the same as that of this press release from National Grid.
These are the main bullet points.
- £1bn project to rewire London will see the replacement of ageing high-voltage electricity cables and expand network capacity to meet the increasing electricity demand
- A new substation at Bengeworth Road in Lambeth is at the heart of the project and will be built by Linxon using Hitachi Energy’s SF6 free gas insulated switchgear technology in a UK first
- The project forms part of National Grid’s ambition to have no SF6 in electrical assets by 2050
- National Grid is investing a total of £1.3bn every year in electricity network infrastructure needed to help the UK decarbonise and reach net zero emissions
I’ll now expand some of these points.
The London Power Tunnels
This is said about the London Power Tunnels.
National Grid’s London Power Tunnels (LPT) project is a seven-year, £1 billion project, to rewire South London via deep underground tunnels. This vital work to replace ageing high-voltage cables will expand capacity and help keep Londoners connected to secure and reliable electricity supplies.
Note.
- In total, there are 32.5km of 3m diameter tunnels.
- They stretch between Wimbledon and Crayford.
- As part of the project, a new tunnel access shaft, substation and headhouse is being built at Bengeworth Road, Lambeth to connect to our London Power Tunnels (LPT) route.
The London Power Tunnels have their own web site.
Sulphur Hexafluoride
This is said about Sulphur Hexafluoride.
Sulphur Hexafluoride (SF6 ) is used in the electricity industry in substations to prevent short circuits and to keep the network safe and reliable, but it has a high global warming potential. National Grid’s ambition is to reduce its SF6 emissions by 50% by 2030 and remove all SF6 gas from electrical assets by 2050.
Linxon is building Bengeworth Road substation for National Grid and to support the business in its transition to SF6 -free solutions, in a UK first, Hitachi Energy will deliver EconiQ™ 400-kilovolt (kV) gas-insulated switchgear (GIS) and gas-insulated lines (GIL) containing no SF6, to enable the transmission of energy over long distances. Installation is expected to begin in 2023, subject to prior approval of the substation by Lambeth Council.
In the Wikipedia entry for sulphur hexafluoride, this is said.
SF6 is 23,500 times more potent than CO2 as a greenhouse gas but exists in relatively minor concentrations in the atmosphere. Its concentration in Earth’s troposphere reached 10.63 parts per trillion (ppt) in 2021, rising at 0.39 ppt/year.[8] The increase over the prior 40 years was driven in large part by the expanding electric power sector, including fugitive emissions from banks of SF6 gas contained in its medium- and high-voltage switchgear. Uses in magnesium, aluminium, and electronics manufacturing also hastened atmospheric growth.
As I have a lot of experience of HF, my view is that we’re well shot of the SF6, but I’ll be 103, when National Grid eliminate it.
The Anonymous Widower 