Shell’s Jackdaw Gas Field Given Go-Ahead By Regulators
The title of this post, is the same as that of this article on the BBC.
These are the first two paragraphs.
Development of a major North Sea gas field has been approved by regulators.
The Jackdaw field, east of Aberdeen, has the potential to produce 6.5% of Britain’s gas output.
This is Greenpeace’s response
But environmental campaigners have condemned the move.
The activist group Greenpeace said it believed the approval could be unlawful and it was considering legal action.
“Approving Jackdaw is a desperate and destructive decision from Johnson’s government, and proves there is no long-term plan,” said Ami McCarthy, a political campaigner for Greenpeace.
I have my thoughts.
The Short Term Problem
We are all paying the high gas price, brought about by Vlad the Mad’s illegal invasion of Ukraine.
On the other hand, I am all for cutting carbon emissions, but stopping the development of the Jackdaw gas field will do nothing to cut total emissions in the short term.
In my view, the only way to cut carbon emissions is to replace the use of natural gas with hydrogen or electricity produced by renewable sources like solar, tidal, wave or wind power.
This change to every heating system and important industries like cement, chemicals, glass and steelmaking to hydrogen and renewable energy is not a short term or low-cost project. Especially whilst we’re still recovering from the pandemic and trying to handle Vlad the Mad.
We will need a supply of natural gas for a few years and if we don’t have enough gas will Greenpeace and their ilk, be happy to see everybody freezing and a large increase in unemployment?
The Government is between a rock and a hard place, where they can either bow to Greenpeace or buy Putin’s bloodstained gas, where there are two alternatives.
- Buy liquified natural gas (LNG) from countries like Australia, Canada, Qatar or the United States.
- Develop our own proven resources.
The advantages of taking the second route include.
- Some of the countries from where gas is available, have bizarre views on human rights and keeping their people safe.
- Gas is transported over long distances in a liquid form. Liquifying natural gas uses a lot of energy. Is that energy renewable?
- Countries from where gas is available are thousands of miles away. How much carbon dioxide will be emitted liquifying and transporting it?
- Gas from our own resources is delivered by pipeline.
- Development of gas fields like Jackdaw, will surely create employment in the UK.
At a first look, I feel that developing Jackdaw and other similar fields, may well be a sensible option to help us through these difficult times.
Exporting Gas To Europe
If you look at the geographical position, you would feel, that the gas will be landed at St. Fergus gas terminal, which is to the North of Aberdeen.
But no! The gas will be landed at Bacton in Norfolk through the SEAL pipeline, which is 475 km. long
Could this be because Shell want to make sure the South of England gets its gas?
Possibly, but much of the UK’s gas imports arrive at LNG terminals in the South.
But Bacton has other assets, in that it has two undersea gas pipelines to the Continent. One is to Belgium and the other is to the Netherlands.
Surely, if we export our gas to other countries, then it is their business what they do with the carbon dioxide.
Not our’s or Shell’s!
Perhaps, we should develop other proven gas fields, as they will create employment in the UK and valuable exports. It will also help our friends out in Europe, in their time of need!
Will Shell Play The Market?
I have just been informed, that recently, improvements have been made to the pipelines in the area and Jackdaw’s gas could now go to St. Fergus.
This surely would give the gas from Jackdaw three destinations.
- Scotland via St. Fergus.
- England via Bacton
- Europe via Bacton and the undersea pipelines.
So will Shell play the markets?
If in the future, we start to produce massive amounts of green hydrogen, I’m sure Europe, will be happy to buy that instead.
Powering Platforms With Renewable Energy
The BBC article says this.
And it plans also to re-power its offshore platforms with renewable electricity rather than burning gas.
Looking at the map, Jackdaw will not be far from the 2 GW wind farm, that Shell are developing.
Will they build a short interconnector from this wind farm to the gas platforms of Jackdaw and other nearby fields?
Will Shell Produce Hydrogen Offshore?
This article on Gas Processing And LNG is entitled Construction Of World’s Largest PEM Electrolyzer Completed.
This is the first two paragraphs.
Air Liquide has completed the construction of the world’s largest PEM (Proton Exchange Membrane) electrolyzer. Supplied with renewable energy, this unit is now producing up to 8.2 tons per day of low-carbon hydrogen in Bécancour, Québec. With this large-scale investment, the Group confirms its long-term commitment to the hydrogen energy markets and its ambition to be a major player in the supply of low-carbon hydrogen.
The new 20 MW PEM electrolyser, equipped with Cummins technology, is the largest operating unit of its kind in the world and will help meet the growing demand for low-carbon hydrogen in North America. Bécancour’s proximity to the main industrial markets in Canada and the United States will help ensure their supply of low-carbon hydrogen for industrial use and mobility. The commissioning of this electrolysis unit increases by 50% the capacity of Air Liquide’s Bécancour hydrogen production complex.
Note.
- This article is about a year old and electrolysers will get larger.
- 20 MW of electricity will produce 8.2 tons per day of low carbon or green hydrogen.
- It may surprise some, that the electrolyser has been built by Cummins, who are diesel engine manufacturers. They are a company, who appear to have seen the way the wind is blowing and are making sure they lead the revolution.
How much hydrogen could a 2 GW wind farm produce?
- Wind farms have a capacity factor, which is how much energy they actually produce compared to their rating.
- Shell’s 2 GW wind farm will be a floating wind farm and these typically have a capacity factor of at least 50 percent.
- I will assume the capacity factor of 50 percent.
This will give 8,200 tonnes per day of green hydrogen. This is nearly three million tons per year.
How Will The Hydrogen Be Brought Ashore?
The HyDeploy project is investigating blending of hydrogen into our natural gas grid.
- It appears that up to 25 % of hydrogen can be added without the need to change boilers and appliances.
- This blending of hydrogen into our natural gas supply, would cut our carbon emissions by a worthwhile amount.
So will we see gas piped to nearby gas platforms like Jackdaw for blending with fresh virgin natural gas?
This would have the following advantages for Shell.
- They wouldn’t need to install an electric cable to the shore with all its associated onshore and offshore substations.
- The hydrogen could be brought ashore at either Bacton or St. Fergus gas terminals.
- Shell could invite other local wind farms to share their electrolyser.
- Shell would need to new onshore installations.
If Shell get this right, they could cut the project cost.
Will Shell Produce Blue Hydrogen Offshore?
I wonder if Shell have a cunning plan.
- It is known, that Shell have developed a catalyst-based blue hydrogen process, which splits natural gas into hydrogen and carbon dioxide, with the addition of oxygen from the air.
- I suspect the process could need a lot of energy to work. But at least a GW from the nearby wind farm will probably be a good start.
- Could that carbon dioxide be captured and stored in a depleted gas field.
- The hydrogen could be piped to either Bacton or St. Fergus, as I previously described.
This hybrid method might be a more economic way to produce zero-carbon hydrogen.
Conclusion
I wouldn’t be surprised if Shell will produce hydrogen offshore.
The Massive Hydrogen Project, That Appears To Be Under The Radar
This page on the SSE Thermal web site, is entitled Aldbrough Gas Storage.
This is the introductory paragraph.
The Aldbrough Gas Storage facility, in East Yorkshire, officially opened in June 2011. The last of the nine caverns entered commercial operation in November 2012.
This page on Hydrocarbons Technology is entitled Aldbrough Underground Gas Storage Facility, Yorkshire.
It gives these details of how Aldbrough Gas Storage was constructed.
The facility was originally planned to be developed by British Gas and Intergen in 1997. British Gas planned to develop Aldbrough North as a gas storage facility while Intergen planned to develop Aldbrough South.
SSE and Statoil became owners of the two projects in 2002 and 2003. The two companies combined the projects in late 2003. Site work commenced in March 2004 and leaching of the first cavern started in March 2005.
The storage caverns were created by using directional drilling. From a central area of the site, boreholes were drilled down to the salt strata located 2km underground.
After completion of drilling, leaching was carried out by pumping seawater into the boreholes to dissolve salt and create a cavern. Natural gas was then pumped into the caverns and stored under high pressure.
Six of the nine caverns are already storing gas. As of February 2012, dewatering and preparation of the remaining three caverns is complete. Testing has been completed at two of these caverns.
The facility is operated remotely from SSE’s Hornsea storage facility. It includes an above ground gas processing plant equipped with three 20MW compressors. The gas caverns of the facility are connected to the UK’s gas transmission network through an 8km pipeline.
Note.
- The caverns are created in a bed of salt about two kilometres down.
- It consists of nine caverns with the capacity to store around 370 million cubic metres (mcm) of gas.
- Salt caverns are very strong and dry, and are ideal for storing natural gas. The technique is discussed in this section in Wikipedia.
As I worked for ICI at Runcorn in the late 1960s, I’m very familiar with the technique, as the company extracted large amounts of salt from the massive reserves below the Cheshire countryside.
This Google Map shows the location of the Aldbrough Gas Storage to the North-East of Hull.
Note.
- The red-arrow marks the site of the Aldbrough Gas Storage.
- It is marked on the map as SSE Hornsea Ltd.
- Hull is in the South-West corner of the map.
This Google Map shows the site in more detail.
It appears to be a compact site.
Atwick Gas Storage
This page on the SSE Thermal web site, is entitled Atwick Gas Storage.
This is said on the web site.
Our Atwick Gas Storage facility is located near Hornsea on the East Yorkshire coast.
It consists of nine caverns with the capacity to store around 325 million cubic metres (mcm) of gas.
The facility first entered commercial operation in 1979. It was purchased by SSE in September 2002.
This Google Map shows the location of the Atwick Gas Storage to the North-East of Beverley.
Note.
- The red-arrow marks the site of the Atwick Gas Storage.
- It is marked on the map as SSE Atwick.
- Beverley is in the South-West corner of the map.
This Google Map shows the site in more detail.
As with the slightly larger Aldbrough Gas Storage site, it appears to be compact.
Conversion To Hydrogen Storage
It appears that SSE and Equinor have big plans for the Aldbrough Gas Storage facility.
This page on the SSE Thermal web site is entitled Plans For World-Leading Hydrogen Storage Facility At Aldbrough.
These paragraphs introduce the plans.
SSE Thermal and Equinor are developing plans for one of the world’s largest hydrogen storage facilities at their existing Aldbrough site on the East Yorkshire coast. The facility could be storing low-carbon hydrogen as early as 2028.
The existing Aldbrough Gas Storage facility, which was commissioned in 2011, is co-owned by SSE Thermal and Equinor, and consists of nine underground salt caverns, each roughly the size of St. Paul’s Cathedral. Upgrading the site to store hydrogen would involve converting the existing caverns or creating new purpose-built caverns to store the low-carbon fuel.
With an initial expected capacity of at least 320GWh, Aldbrough Hydrogen Storage would be significantly larger than any hydrogen storage facility in operation in the world today. The Aldbrough site is ideally located to store the low-carbon hydrogen set to be produced and used in the Humber region.
Hydrogen storage will be vital in creating a large-scale hydrogen economy in the UK and balancing the overall energy system by providing back up where large proportions of energy are produced from renewable power. As increasing amounts of hydrogen are produced both from offshore wind power, known as ‘green hydrogen’, and from natural gas with carbon capture and storage, known as ‘blue hydrogen’, facilities such as Aldbrough will provide storage for low-carbon energy.
I have a few thoughts.
Will Both Aldbrough and Atwick Gas Storage Facilities Be Used?
As the page only talks of nine caverns and both Aldbrough and Atwick facilities each have nine caverns, I suspect that at least initially only Aldbrough will be used.
But in the future, demand for the facility could mean all caverns were used and new ones might even be created.
Where Will The Hydrogen Come From?
These paragraphs from the SSE Thermal web page give an outline.
Equinor has announced its intention to develop 1.8GW of ‘blue hydrogen’ production in the region starting with its 0.6GW H2H Saltend project which will supply low-carbon hydrogen to local industry and power from the mid-2020s. This will be followed by a 1.2GW production facility to supply the Keadby Hydrogen Power Station, proposed by SSE Thermal and Equinor as the world’s first 100% hydrogen-fired power station, before the end of the decade.
SSE Thermal and Equinor’s partnership in the Humber marks the UK’s first end-to-end hydrogen proposal, connecting production, storage and demand projects in the region. While the Aldbrough facility would initially store the hydrogen produced for the Keadby Hydrogen Power Station, the benefit of this large-scale hydrogen storage extends well beyond power generation. The facility would enable growing hydrogen ambitions across the region, unlocking the potential for green hydrogen, and supplying an expanding offtaker market including heat, industry and transport from the late 2020s onwards.
Aldbrough Hydrogen Storage, and the partners’ other hydrogen projects in the region, are in the development stage and final investment decisions will depend on the progress of the necessary business models and associated infrastructure.
The Aldbrough Hydrogen Storage project is the latest being developed in a long-standing partnership between SSE Thermal and Equinor in the UK, which includes the joint venture to build the Dogger Bank Offshore Wind Farm, the largest offshore wind farm in the world.
It does seem to be, a bit of an inefficient route to create blue hydrogen, which will require carbon dioxide to be captured and stored or used.
Various scenarios suggest themselves.
- The East Riding of Yorkshire and Lincolnshire are agricultural counties, so could some carbon dioxide be going to help greenhouse plants and crops, grow big and strong.
- Carbon dioxide is used as a major ingredient of meat substitutes like Quorn.
- Companies like Mineral Carbonation International are using carbon dioxide to make building products like blocks and plasterboard.
I do suspect that there are teams of scientists in the civilised world researching wacky ideas for the use of carbon dioxide.
Where Does The Dogger Bank Wind Farm Fit?
The Dogger Bank wind farm will be the largest offshore wind farm in the world.
- It will consist of at least three phases; A, B and C, each of which will be 1.2 GW.
- Phase A and B will have a cable to Creyke Beck substation in Yorkshire.
- Phase C will have a cable to Teesside.
Creyke Beck is almost within walking distance of SSE Hornsea.
Could a large electrolyser be placed in the area, to store wind-power from Dogger Bank A/B as hydrogen in the Hydrogen Storage Facility At Aldbrough?
Conclusion
SSE and Equinor may have a very cunning plan and we will know more in the next few years.
Salt Deposits And Gas Cavern Storage In The UK
This post is mainly to point to this useful document on the government web site, that is entitled Salt Deposits And Gas Cavern Storage In The UK With A Case Study Of Salt Exploration From Cheshire.
UK Energy Exports To Europe At Record High
The title of this post, is the same as that of this article on The Times.
This is the first two paragraphs.
Britain has exported record amounts of gas to Europe so far this year as its liquefied natural gas terminals receive shipments destined for the Continent.
Electricity exports also have surged to unprecedented highs in recent weeks after an unexpected glut of gas pushed down short-term gas prices and resulted in gas-fired power plants generating more for export.
Who’d have thought it, that all those gas pipelines and electricity interconnectors between the UK and the Continent of Europe would be part of the replacementliqui for Russian gas.
According to Wikipedia, we have three liquified natural gas terminals; two at Milford Haven; South Hook and Dragon, and Grain on the Isle of Grain.
Note.
- South Hook is Europe’s largest liquified natural gas terminal and is owned by a partnership of the Qataris, ExxonMobil and Elf.
- South Hook and Dragon together can provide 25 % of the UK’s natural gas needs.
- Grain is owned by National Grid and according to Wikipedia, is in terms of storage capacity it is the largest LNG facility in Europe and the eighth largest in the world.
- Grain can supply 20 % of the UK’s natural gas needs.
- Grain has a reloading facility, so that gas can be exported.
- Grain seems to be continually expanding.
- Both Milford Haven and the Isle of Grain have large gas-fired power-stations.
Politicians say we don’t have enough gas storage, but we do seem to have world-class LNG terminals.
I have a couple of extra thoughts.
Blending Natural Gas With Hydrogen
HyDeploy is a project investigated blending hydrogen natural gas to cut carbon emissions. The project is described in this post called HyDeploy.
Surely, these terminals could be places, where hydrogen is blended with our natural gas supply.
- The terminals are connected to the UK gas network.
- Both Milford Haven and the Isle of Grain should have access to large amounts of offshore wind energy in the next few years, which could be used to generate green hydrogen.
- The terminals would need electrolysers to generate the hydrogen.
The Isle of Grain already has a blending capability.
NeuConnect
NeuConnect is an under-development interconnector between the Isle of Grain in Kent and Wilhelmshaven in Germany.
- It will have a capacity 1.4 GW.
- All the planning permissions seem to be in place.
- Prysmian have won a € 1.2 million contract to deliver the interconnector.
- Arup and German engineering firm Fichtner have formed a joint venture to provide project services for the interconnector.
- Construction could start this year.
It looks like the Germans will be replacing some of Putin’s bloodstained gas with clean zero-carbon energy from the UK.
Should We Develop More Gas Fields?
There are some gas fields in the seas around the UK, like Jackdaw, that could be developed.
Suppose, we extracted the gas and sent it to the reloading terminal on the Isle of Grain through the gas transmission network, where it could be exported by ship, to the Continent.
The UK would not be increasing its carbon emissions, as that would surely be the responsibility of the end-user.
Should We Develop More Gas Fired Power-Stations?
I believe it is possible to develop carbon-capture technology for gas-fired power stations.
The carbon dioxide would be either used in a beneficial way or stored in perhaps a worked-out gas field under the North Sea.
So long as no carbon dioxide is released into the atmosphere, I don’t see why more gas-fired power stations shouldn’t be developed.
What is happening at Keadby near Scunthorpe would appear to be one model for zero-carbon power generation.
Keadby Power Station
This is an existing
Conclusion
We will be exporting more energy to the Continent.
Is This The World’s Most Ambitious Green Energy Solution?
In the 1970s and 1980s, when I was developing Artemis, which was the first desk-sized project management system, we were heavily involved in North Sea Oil, with dozens of systems in Aberdeen. As Norway developed the oil business on the other side of the North Sea, the number of systems there grew to at least twenty.
Increasingly, I became aware of a Norwegian company called Kværner, which seemed to have large numbers of Artemis systems.
In 2002, Kværner merged with Aker Maritime and this eventually led to the formation of Aker Solutions in 2008, which is a company that is headquartered in Oslo and employs nearly 14,000.
According to Wikipedia, the Kværner name was dropped somewhere along the way, as non-Scandinavians have difficulty pronouncing Kværner.
Aker Solutions appears to be wholly Scandinavian-owned, with Aker ASA owning a third of the company.
They are a very respected company, when it comes to offshore engineering for oil and gas and wind projects.
Aker ASA also have a subsidiary called Aker Horizons, which has this web site, where they call themselves a planet-positive company.
This page on the Aker Horizons is entitled Northern Horizons: A Pathway for Scotland to Become a Clean Energy Exporter.
These first two paragraphs outline the project.
A vision to utilise Scottish offshore wind resources in the North Sea to make the country an exporter of clean energy has been unveiled at the COP 26 climate change conference in Glasgow.
The Northern Horizons Project has been unveiled by Aker Horizons’ portfolio companies Aker Offshore Wind and Aker Clean Hydrogen, who have the technical know-how and expertise to realise the project, and DNV, the independent energy expert and assurance provider.
Various targets and ambitions are listed.
- 10 GW of renewable energy in the North Sea.
- 5 GW of green hydrogen.
- Giant turbines nearly as tall as the London Shard on floating platforms more than 130km from Shetland.
- Enough liquid hydrogen will be produced to power 40 percent of the total mileage of local UK buses.
- Enough synthetic fuel to make 750 round trips from the UK to New York.
A completion date of 2030 for this project is mentioned.
This article on The Engineer is entitled Northern Horizons Plans Clean Energy Exports For Scotland.
The article is dated the 4th of November 2021 and starts with this sub-heading and an informative video.
Aker Horizons’ new initiative, Northern Horizons, aims to make Scotland a clean energy exporter by utilising offshore wind resources in the North Sea.
There is an explanatory graphic of the project which shows the following.
- Floating wind turbines.
- A floating DC substation.
- A floating hydrogen electrolyser.
- An onshore net-zero refinery to produce synthetic aviation fuel and diesel.
- A hydrogen pipeline to mainland Scotland.
- Zero-carbon energy for Shetland.
It is all very comprehensive.
These are some other thoughts.
Project Orion
Project Orion how has its own web site and the project that seems to have similar objectives to Northern Horizons.
The title on the home page is Building A World-Leading Clean Energy Island.
There is this statement on the home page.
Orion is a bold, ambitious project that aims to transform Shetland into the home of secure and affordable clean energy.
We will fuel a cleaner future and protect the environment by harnessing the islands’ renewables potential, using onshore and offshore wind, tidal and wave energy.
The graphic has similar features to that Northern Horizons in the article on The Engineer, with the addition of providing an oxygen feed to Skyrora for rocket fuel.
German Finance
I feel very much, that the Germans could be providing finance for developments around Shetland, as the area could be a major source of hydrogen to replace Vlad the Mad’s tainted gas.
In Do BP And The Germans Have A Cunning Plan For European Energy Domination?, I described how BP is working with German utilities and finance to give Germany the hydrogen it needs.
NorthConnect
The NorthConnect (also known as Scotland–Norway interconnector) is a proposed 650 km (400-mile) 1,400 MW HVDC interconnector over the floor of the North Sea.
- It will run between Peterhead in North-East Scotland and Norway.
This project appears to be stalled, but with the harvesting of more renewable energy on Shetland, I can see this link being progressed, so that surplus energy can be stored in Norway’s pumped storage hydro.
Icelink
Icelink is a proposed electricity interconnector between Iceland and Great Britain.
- It would be the longest undersea interconnector in the world, with a length of 620 to 750 miles.
- It would be a 800–1,200 MW high-voltage direct current (HVDC) link.
- National Grid is part of the consortium planning to build the link.
- Iceland has a surplus of renewable energy and the UK, is the only place close enough for a connection.
I believe that if Icelink were to be built in conjunction with energy developments on and around Shetland, a more powerful and efficient interconnector could emerge.
Conclusion
This ambitious project will transform the Shetlands and the energy industry in wider Scotland.
This project is to the North-East of Shetland, but the islands are surrounded by sea, so how many other Northern Horizons can be built in a ring around the islands?
Germany Weighs Norway Hydrogen Pipeline To Avoid Russian Energy
The title of this post, is the same as that of this article on Hydrogen Central.
This the introductory paragraphs.
Germany and Norway are considering building a hydrogen pipeline linking the two nations to reduce Europe’s dependence on Russian energy supplies.
The countries plan to soon conduct a feasibility study on the project that would eventually transport green hydrogen from Norway to Germany, they said after a meeting between German Economy Minister Robert Habeck and Norwegian Prime Minister Jonas Gahr Store.
There is a joint statement that gives more details.
Developments like this and lots of wind power in the North Sea and around the UK, are the sort of actions, that could seriously reduce the size of Russia’s oil and gas industry and the money it pays to that group of war criminals like Vlad the Mad and his friends.
Shell Resurrects Plans For Rejected North Sea Gasfield
The title of this post, is the same as that of this article on The Times.
This is the first two paragraphs.
Shell has submitted a revised plan for a North Sea gasfield that was rejected by regulators on environmental grounds last year.
The oil and gas major is seeking to develop the Jackdaw field, about 155 miles east of Aberdeen, which it says could produce 6.5 per cent of UK domestic gas output at peak — enough to heat 1.4 million homes. It hopes to start production in 2025 at the field, which would keep producing until 2033.
Other points in the article include.
- The platform would be unmanned.
- One of the problems with the field is that the gas naturally contains a lot of carbon dioxide.
- Shell plans to capture and store this carbon dioxide.
- The gas would be brought to shore using a nineteen mile pipeline to the Shearwater platform.
Surprisingly, the Shearwater platform is connected by the 295 mile SEAL pipeline to the Bacton terminal in Norfolk. But then Bacton is connected by the BBL pipeline to the Netherlands.
- There are depleted gas fields connected to Bacton, that can be used to store the carbon dioxide from the Jackdaw gas field.
- Shell manage the BBL pipeline.
- Shell are sitting in the middle with gas, that can be sold to the highest bidder.
It could be good for Shell without a great deal of expenditure on infrastructure.
In the short term, Jackdaw could make up our gas shortage, but as we start to blend wind-produced hydrogen into the gas network, we can export the surplus gas to the Continent. Shell might have plans for other gas fields to participate in the export of British gas to Germany, that has been replaced by wind-produced hydrogen.
It would be an interesting point, as to who would be responsible for the carbon dioxide produced by Jackdaw’s gas, that is burned in Germany. I suspect it will be the Germans.
In the long-term, when Shearwater and Jackdaw have given up all their gas, I wonder if Shell’s plans could be.
- Surround the platforms serving these fields with floating wind farms.
- Put a giant electrolyser on the Shearwater platform and bring hydrogen to the shore in the SEAL pipeline.
- Distribute the hydrogen from Bacton to the UK or through the BBL pipeline to the Continent.
I feel that Shell could do very nicely thank you out of the Jackdaw gas-field.
But it is also a plan, that produces a lot of energy, without emitting vast amounts of carbon dioxide.
The Mathematics Of Blending Twenty Percent Of Hydrogen Into The UK Gas Grid
HyDeploy is a project, that is investigating blending hydrogen into the UK’s natural gas supply to reduce the amount of carbon dioxide produced by the burning of natural gas in power stations, industrial processes and in our homes and other buildings.
To find out more about the project, visit the HyDeploy web site.
This is a paragraph from this page on the HyDeploy web site, which describes the current progress of the project.
HyDeploy is progressing well. The HSE gave the go ahead for a live demonstration, at Keele University, of blended hydrogen and natural gas which began in Autumn 2019 and completed in Spring 2021. The HSE are satisfied that the blend of gas will be as safe as the gas we all currently use. The hydrogen content will be up to 20% and has so far reached 15%.
Note that HSE is the Health and Safety Executive, who are closely involved.
HyDeploy has now moved on to Phase 2 in the North East.
For our North East demonstration, we have contacted everyone who will be involved in that demonstration – more than 650 homes – and arranged for our engineers to carry out Gas Safe checks on their gas appliances and gather information on the range of appliances in the demonstration area. The Gas Safe checks were free of charge. Almost 90% of those homes have engaged with us.
What would be the effects of 20 % of hydrogen blended into natural gas?
Will current boilers, cookers and other gas-powered devices work on a blend of hydrogen and natural gas?
This is one for the scientists and it is one of the objectives of the HyDeploy trial to understand how every use of gas performs if instead of natural gas, the fuel is a mixture of eighty percent natural gas and twenty percent hydrogen.
I will assume that these problems are solvable.
I am not just hoping, but I can remember in the early 1970s, when our elderly gas cooker was successfully converted from town gas, which was typically a mixture of hydrogen (50%), methane (35%),carbon monoxide (10 %) and ethylene (5%), to natural gas, as North Sea gas started to flow.
This document from the UK government is entitled Fuels: Natural Gas, which contains a section entitled Material Properties Relevant To Use, where this is said.
Natural gas is a combustible gas that is a mixture of simple hydrocarbon compounds. It contains primarily methane, along with small amounts of ethane, butane, pentane, and propane. Natural gas does not contain carbon monoxide. The by-products of burning natural gas are primarily carbon dioxide and water vapour. Natural gas is colourless, tasteless and odourless. Because it is odourless, an odorant (80% tertiarybutyl mercaptan, 20% dimethyl sulphide) is added to the gas, to give the gas a distinctive smell. Other beneficial properties of natural gas are a high ignition temperature and a
narrow flammability range, meaning natural gas will ignite at temperatures above 593°degrees and burn at a mix of 4 – 15% volume in air (St. Lawrence Gas, 2015)
As ethane (C2H6), butane (C4H10), pentane (C5H12) and propane (C3H8) are all similar simple hydrocarbons to methane, which burn to produce carbon dioxide and water, I will assume in this analysis, that natural gas is all methane (CH4).
It is reasonable to assume, that currently we use a fuel which is equivalent to 100 % methane and that in the future we could use 80 % methane and 20 % hydrogen. Also in the past, we used to use a fuel, that was 50 % hydrogen and 35 % methane. The carbon monoxide is a poison, so I’ll ignore it, but ethylene (C2H4) is another of those simple hydrocarbons, which burn to release just carbon dioxide and water.
So if we were able to go from town to natural gas fifty years ago, by just adjusting gas equipment, surely we can go partly the other way in the Twenty-First Century.
I can certainly see the UK gas supply containing twenty percent hydrogen, but wouldn’t be surprised to see a higher level of hydrogen in the future.
How Much Hydrogen Needs To Be Added?
This page on worldodometer says this about UK gas consumption.
The United Kingdom consumes 2,795,569 million cubic feet (MMcf) of natural gas per year as of the year 2017.
I will now calculate the weight of hydrogen needed to be added.
- 2,795,569 million cubic feet converts to 79161.69851 million cubic metres.
- I will round that to 79161.7 million cubic metres.
- Twenty percent is 15832.34 million cubic metres.
- A cubic metre of hydrogen weighs 0.082 Kg, which gives that in a year 1,298.25188 million kilograms will need to be added to the UK gas supply.
This is 1,298,251.88 tonnes per year, 3,556.85 tonnes per day or 148.2 tonnes per hour.
How Much Electricity Is Needed To Create This Amount Of Hydrogen?
In Can The UK Have A Capacity To Create Five GW Of Green Hydrogen?, I said the following.
Ryze Hydrogen are building the Herne Bay electrolyser.
- It will consume 23 MW of solar and wind power.
- It will produce ten tonnes of hydrogen per day.
The electrolyser will consume 552 MWh to produce ten tonnes of hydrogen, so creating one tonne of hydrogen needs 55.2 MWh of electricity.
To create 148.2 tonnes per hour of hydrogen would need 8,180.64 MW of electricity or just under 8.2 GW.
How Much Carbon Dioxide Would Be Saved?
This page on the Engineering Toolbox is entitled Combustion Of Fuels – Carbon Dioxide Emission and it gives a list of how much carbon dioxide is emitted, when a fuel is burned.
For each Kg of these fuels, the following Kg of carbon dioxide will be released on combustion.
- Methane – 2.75
- Gasoline – 3.30
- Kerosene – 3.00
- Diesel – 3.15
- Bituminous coal – 2.38
- Lignite 1.10
- Wood – 1.83
Engineering Toolbox seems a very useful web site.
I will now calculate how much carbon dioxide would be saved.
- In 2017, UK methane consumption was 79161.7 million cubic metres.
- One cubic metre of methane weighs 0.554 Kg.
- The total weight of methane used is 43,855,581.8 tonnes.
- Multiplying by 2.75 shows that 120,602,849.95 tonnes of carbon dioxide will be produced.
As twenty percent will be replaced by hydrogen, carbon dioxide emission savings will be 24,120,569.99 tonnes.
That seems a good saving, from a small country like the UK.
The UK would also reduce natural gas consumption by twenty percent or 15832.34 million cubic metres per year.
How many other countries with good renewable and zero-carbon electricity resources like Australia, Chile, Denmark, France, Iceland, Ireland, Jordan, Morocco, Norway, Sweden and the United States will take this route, as it seems a good way to save large amounts of carbon?
There is also the collateral benefit, that countries with a good supply of hydrogen can use hydrogen to decarbonise the heavy transport sectors of rail, road and sea freight transport.
The big winners would appear to be those companies like ITM Power, who manufacture electrolysers and those companies like Fortescue Future Industries, who are prospecting, developing and promoting the hydrogen resources of the planet.
The losers will be countries, who are reliant on importing large amounts of gas and other fossil fuels, who don’t have access to large amounts of renewable energy like geothermal, hydro, nuclear, solar and wind.
Germany’s energy policy of no nuclear, more coal and Russian gas seems to have been a mistake.
But I’m sure, if Olaf Sholz talked nicely to Boris, there is a deal to be made.
- German utilities have already arranged to fund BP’s move into wind farms in Morecambe Bay and the North Sea.
- Norfolk’s gas terminal at Bacton is less than three hundred miles from Germany’s new hydrogen terminal at Wilhelmshaven.
The biggest loser could be Vlad the Poisoner.
Is There A Need For A Norfolk-Suffolk Interconnector?
The coast of East Anglia from the Wash to the Haven Ports of Felixstowe, Harwich and Ipswich is becoming the Energy Coast of England.
Starting at the Wash and going East and then South, the following energy-related sites or large energy users are passed.
Bicker Fen Substation
Bicker may only be a small hamlet in Lincolnshire, but it is becoming increasingly important in supplying energy to the UK.
Nearby is Bicker Fen substation, which connects or will connect the following to the National Grid.
- The 26 MW Bicker Fen onshore windfarm.
- The 1,400 MW interconnector from Denmark called Viking Link.
- The proposed 857 MW offshore wind farm Triton Knoll.
This Google Map shows the location of Bicker Fen with respect to The Wash.
Bicker Fen is marked by the red arrow.
The Google Map shows the substation.
It must be sized to handle over 2 GW, but is it large enough?
Dudgeon Offshore Wind Farm
The Dudgeon offshore wind farm is a 402 MW wind farm, which is twenty miles off the North Norfolk coast.
- It has 67 turbines and an offshore substation.
- It is connected to the shore at Weybourne on the coast from where an underground cable is connected to the National Grid at Necton.
- It became operational in Oct 2017.
- Equinor and Statkraft are part owners of the windfarm and this is the home page of the wind farm’s web site.
- Equinor is the operator of the wind farm.
This Google Map shows the location of Weybourne on the coast.
Note.
- Weybourne is in the middle on the coast.
- Sheringham is on the coast in the East.
- Holt is on the Southern edge of the map almost South of Weybourne.
This second map shows the location of the onshore substation at Necton, with respect to the coast.
Note.
- The Necton substation is marked by a red arrow.
- Holt and Sheringham can be picked out by the coast in the middle.
- Weybourne is to the West of Sheringham.
- Necton and Weybourne are 35 miles apart.
Digging in the underground cable between Necton and Weybourne might have caused some disruption.
Looking at Weybourne in detail, I can’t find anything that looks like a substation. So is the Necton substation connected directly to Dudgeon’s offshore substation?
Sheringham Shoal Offshore Wind Farm
The Sheringham Shoal offshore wind farm is a 316.8 MW wind farm, which is eleven miles off the North Norfolk coast.
- It has 88 turbines and two offshore substations.
- As with Dudgeon, it is connected to the shore at Weybourne on the coast.
- But the underground cable is connected to an onshore substation at Salle and that is connected to the National Grid at Norwich.
- It became operational in Sept 2012.
- Equinor and Statkraft are part owners of the windfarm and this is the home page of the wind farm’s web site.
- Equinor is the operator of the wind farm.
This second map shows the location of the onshore substation at Salle, with respect to the coast.
Note.
- The Salle substation is marked by a red arrow.
- Holt, Weybourne and Sheringham can be picked out by the coast in the middle.
- Weybourne is to the West of Sheringham.
- Salle and Weybourne are 13.5 miles apart.
Could the following two statements be true?
- As the Sheringham Shoal wind farm was built first, that wind farm was able to use the shorter route.
- It wasn’t built large enough to be able to handle the Dudgeon wind farm.
The statements would certainly explain, why Dudgeon used a second cable.
Extending The Dudgeon And Sheringham Shoal Wind Farms
Both the Dudgeon And Sheringham Shoal web sites have details of the proposed join extension of both wind farms.
This is the main statement on the Overview page.
Equinor has been awarded an Agreement for Lease by the Crown Estate, the intention being to seek consents to increase the generating capacity of both the Sheringham Shoal Offshore Wind Farm and the Dudgeon Offshore Wind Farm.
They then make three points about the development.
- Equinor is proposing a joint development of the two projects with a common transmission infrastructure.
- As part of the common DCO application, the Extension Projects have a shared point of connection at the National Grid Norwich Main substation.
- These extension projects will have a combined generating capacity of 719MW which will make an important contribution to the UK’s target of 30GW of electricity generated by offshore wind by 2030.
This statement on the Offshore Location page, describes the layout of the wind farms.
The Sheringham Shoal Offshore Wind Farm extension is to the north and the east of the existing wind farm, while its Dudgeon counterpart is to the north and south east of the existing Dudgeon Offshore Wind Farm site. The proposed extension areas share the boundaries with its existing wind farm site.
They then make these two important points about the development.
- Equinor is seeking to develop the extension project with a joint transmission infrastructure. A common offshore substation infrastructure is planned to be located in the Sheringham Shoal wind farm site.
- The seabed export cable which will transmit the power generated by both wind farm extensions will make landfall at Weybourne.
There is also this map.
Note.
- The purple line appears to be the UK’s ten mile limit.
- The Sheringham Shoal Extension is outlined in red.
- The Dudgeon Extension is outlined in blue.
- The black lines appear to be the power cables.
I suspect the dotted blue lines are shipping routes sneaking their way through the turbines.
This statement on the Onshore Location page, describes the layout of the offshore and onshore cables.
A new seabed export cable will bring the electricity generated by both the Sheringham Shoal and Dudgeon Offshore Wind Farm extensions to shore at Weybourne, on the coast of Norfolk.
They then make these two important points about the development.
- From there a new underground cable will be installed to transmit that power to a new purpose built onshore substation, which will be located within a 3km radius of the existing Norwich main substation, south of Norwich. This will be the National Grid network connection point for the electricity from both wind farm extensions.
- The power will be transmitted from landfall to the substation using an HVAC system which eliminates the need for any relay stations along the onshore cable route.
There is also this map.
It will be a substantial undertaking to build the underground cable between Weybourne and South of Norwich.
Bacton Gas Terminal
The Bacton gas terminal is a complex of six gas terminals about ten miles East of Cromer.
- It lands and processes gas from a number of fields in the North Sea.
- It hosts the UK end of the BBL pipeline to The Netherlands.
- It hosts the UK end of the Interconnector to Zeebrugge in Belgium.
- The Baird and Deborah fields, which have been developed as gas storage, are connected to the gas terminal. They are both mothballed.
This Google Map shows the location of the terminal.
Note.
- The Bacton gas terminal is marked by a red arrow.
- Sheringham is in the North West corner of the map.
- Cromer, Overstrand, Trimingham and Mundesley are resort towns and villages along the coast North of Bacton.
This second map shows the Bacton gas terminal in more detail.
Would you want to have a seaside holiday, by a gas terminal?
Norfolk Boreas And Norfolk Vanguard
Norfolk Boreas and Norfolk Vanguard are two wind farms under development by Vattenfall.
- Norfolk Boreas is a proposed 1.8 GW wind farm, that will be 45 miles offshore.
- Norfolk Vanguard is a proposed 1.8 GW wind farm, that will be 29 miles offshore.
This map shows the two fields in relation to the coast.
Note.
- The purple line appears to be the UK’s ten mile limit.
- Norfolk Boreas is outlined in blue.
- Norfolk Vsnguard is outlined in orange.
- Cables will be run in the grey areas.
This second map shows the onshore cable.
Note.
- The cables are planned to come ashore between Happisburgh and Eccles-on-Sea.
- Bacton gas terminal is only a short distance up the coast.
- The onshore cable is planned to go from here across Norfolk to the Necton substation.
But all of this has been overturned by a legal ruling.
This article on the BBC is entitled Norfolk Vanguard: Ministers Wrong Over Wind Farm Go-Ahead, Says Judge.
These are the first four paragraphs.
A High Court judge has quashed permission for one of the world’s largest offshore wind farms to be built off the east coast of England.
The Norfolk Vanguard Offshore Wind Farm was granted development consent in July by the Secretary of State for Business, Energy and Industrial Strategy (BEIS).
But Mr Justice Holgate overturned the decision following legal action from a man living near a planned cable route.
A Department for BEIS spokeswoman said it was “disappointed by the outcome”.
I bet the spokeswoman was disappointed.
Vattenfall and the BEIS will go back to the drawing board.
But seriously, is it a good idea to dig an underground cable all the way across Norfolk or in these times build a massive overhead cable either?
Perhaps the solution is to connect the Norfolk Boreas And Norfolk Vanguard wind farms to a giant electrolyser at Bacton, which creates hydrogen.
- The underground electricity cable across Norfolk would not be needed.
- Bacton gas terminal is only a few miles up the coast from the cable’s landfall.
- The UK gets another supply of gas.
- The hydrogen is blended with natural gas for consumption in the UK or Europe.
- A pure hydrogen feed can be used to supply hydrogen buses, trucks and other vehicles, either by tanker or pipeline.
- Excess hydrogen could be stored in depleted gas fields.
The main benefit though, would be that it would transform Bacton gas terminal from a declining asset into Norfolk’s Hydrogen Powerhouse.
Great Yarmouth And Lowestoft
Great Yarmouth Outer Harbour and the Port of Lowestoft have not been the most successful of ports in recent years, but with the building of large numbers of wind farms, they are both likely to receive collateral benefits.
I wouldn’t be surprised to see the support ships for the wind farms switching to zero-carbon power, which would require good electrical connections to the ports to either charge batteries or power electrolysers to generate hydrogen.
Sizewell
Sizewell has only one nuclear power station at present; Sizewell B, but it could be joined by Sizewell C or a fleet of Small Modular Reactors (SMR).
The Sizewell Overhead Transmission Line
Sizewell also has a very high capacity overhead power line to Ipswich and the West.
I doubt, it would be possible to build an overhead transmission line like this today.
Sizewell And Hydrogen
EdF, who own the site are involved with Freeport East and may choose to build a large electrolyser in the area to create hydrogen for the Freeport.
East Anglia Array
The East Anglia Array will be an enormous wind farm., comprising up to six separate projects.
It will be thirty miles offshore.
It could generate up to 7.2 GW.
The first project East Anglia One is in operation and delivers 714 MW to a substation in the Deben Estuary, which connects to the Sizewell high-capacity overhead power line.
Most projects will be in operation by 2026.
Freeport East
As the Freeport develops, it will surely be a massive user of both electricity and hydrogen.
Problems With The Current Electricity Network
I don’t believe that the current electricity network, that serves the wind farms and the large energy users has been designed with the number of wind farms we are seeing in the North Sea in mind.
Every new windfarm seems to need a new connection across Norfolk or Suffolk and in Norfolk, where no high-capacity cables exist, this is stirring up the locals.
There is also no energy storage in the current electricity network, so at times, the network must be less than efficient and wind turbines have to be shut down.
Objections To The Current Policies
It is not difficult to find stories on the Internet about objections to the current policies of building large numbers of wind farms and the Sizewell C nuclear power station.
This article on the East Anglia Daily Times, which is entitled Campaigners Unite In Calling For A Pause Before ‘Onslaught’ Of Energy Projects ‘Devastates’ Region is typical.
This is the first paragraph.
Campaigners and politicians have called on the Government to pause the expansion of the energy industry in Suffolk, which they fear will turn the countryside into an “industrial wasteland” and hit tourism.
The group also appear to be against the construction of Sizewell C.
I feel they have a point about too much development onshore, but I feel that if the UK is to thrive in the future we need an independent zero carbon energy source.
I also believe that thousands of wind farms in the seas around the UK and Ireland are the best way to obtain that energy.
Blending Hydrogen With Natural Gas
Blending green hydrogen produced in an electrolyser with natural gas is an interesting possibility.
- HyDeploy is a project to investigate blending up to 20 % of green hydrogen in the natural gas supply to industrial and domestic users.
- Partners include Cadent, ITM Power, Keele University and the Health and Safety Executive.
- Natural gas naturally contains a small amount of hydrogen anyway.
- The hydrogen gas would be distributed to users in the existing gas delivery network.
I wrote about HyDeploy in a post called HyDeploy.
Thje only loser, if hydrogen were to be blended with natural gas would be Vlad the Poisoner, as he’d sell less of his tainted gas.
An Interconnector Between Bicker Fen And Freeport East
I believe that an electricity interconnector between at least Bicker Fen and Freeport East could solve some of the problems.
My objectives would be.
- Avoid as much disruption on the land as possible.
- Create the capacity to deliver all the energy generated to customers, either as electricity or hydrogen.
- Create an expandable framework, that would support all the wind farms that could be built in the future.
The interconnector would be a few miles offshore and run along the sea-bed.
- This method of construction is well proven.
- It was used for the Western HVDC Link between Hunterston in Scotland and Connah’s Quay in Wales.
- Most wind farms seem to have existing substations and these would be upgraded to host the interconnector.
Connections en route would include.
Dudgeon Offshore Wind Farm
The interconnector would connect to the existing offshore substation.
Sheringham Shoal Wind Farm
The interconnector would connect to the existing offshore substation.
Dudgeon and Sheringham Shoal Extension Offshore Wind Farms
These two wind farms could be connected directly to the interconnector, if as planned, they shared an offshore substation in the Sheringham Shoal Extension offshore wind farm.
Bacton Gas Terminal
I would connect to the Bacton Gas Terminal, so that a large electrolyser could be installed at the terminal.
The hydrogen produced could be.
- Stored in depleted gas fields connected to the terminal.
- Blended with natural gas.
- Exported to Europe through an interconnector.
- Supplied to local users by truck or pipeline.
After all, the terminal has been handling gas for over fifty years, so they have a lot of experience of safe gas handling.
Norfolk Boreas And Norfolk Vanguard
These two wind farms could be connected directly to the interconnector, if they shared an offshore substation.
It would also help to appease and silence the objectors, if there was no need to dig up half of Norfolk.
Great Yarmouth And Lowestoft
It might be better, if these ports were supplied from the interconnector.
- Either port could have its own electrolyser to generate hydrogen, which could be.
- Used to power ships, trucks and port equipment.
- Liquefied and exported in tankers.
- Used to supply local gas users.
- Hydrogen could be supplied to a converted Great Yarmouth power station.
Both Great Yarmouth and Lowestoft could become hydrogen hub towns.
Sizewell
This site has a high-capacity connection to the National Grid. This connection is a big eyesore, but it needs to run at full capacity to take electricity from the Energy Coast to the interior of England.
That electricity can come from Sizewell B and/or Sizewell C nuclear power stations or the offshore wind farms.
East Anglia Array
There would probably need to be a joint offshore substation to control the massive amounts of electricity generated by the array.
Currently, the only wind farm in operation of this group is East Anglia One, which uses an underground cable connection to the Sizewell high-capacity connection to the Bullen Lane substation at Bramford.
Freeport East, Ipswich And Bullen Lane Substation
This Google Map shows the area between Ipswich and the coast.
Note.
- Sizewell is in the North-East corner of the map.
- Felixstowe, Harwich and Freeport East are at the mouth of the rivers Orwell and Stour.
- The Bullen Lane substation is to the West of Ipswich and shown by the red arrow.
I would certainly investigate the possibility of running an underwater cable up the River Orwell to connect the Southern end of the interconnector Between Bicker Fen And Freeport East.
This Google Map shows the Bullen Lane Substation.
It looks impressive, but is it big enough to handle all the electricity coming ashore from the offshore wind farms to the East of Suffolk and the electricity from the power stations at Sizewell?
Conclusion
I believe there are a lot of possibilities, that would meet the threeobjectives, I stated earlier.
- Avoid as much disruption on the land as possible.
- Create the capacity to deliver all the energy generated to customers, either as electricity or hydrogen.
- Create an expandable framework, that would support all the wind farms that could be built in the future.
In addition, simple mathematics says to me, that either there will need to be extra capacity at both Bicker Fen and Bullen Lane substations and onward to the rest of the country, or a large electrolyser to convert several gigawatts of electricity into hydrogen for distribution, through the gas network.
Why Use A Hydrogen Pipeline Rather Than A Electricity Cable To Bring Electricity Ashore From A Windfarm?
A comment to the post entitled Siemens Gamesa Partners On Offshore Wind-to-Hydrogen, was as follows.
Trying to get my head around this concept. Build an electrolysis plant in the North Sea and run a hydrogen pipeline to shore, rather than generating electricity and transferring the power by undersea cable to a shore based electrolysis plant. Can it really be better technically and economically? Someone convince me.
The reasons probably all come down to saving money and hassle.
Reusing Existing Infrastructure
Supposing, you have an offshore gas field, which is on the point of being worked out.
- It has a well-maintained platform on top.
- It has a pipe to an onshore terminal that handles the natural gas and distributes it to end-users.
Supposing the following are possible.
- Building a large wind farm in the vicinity of the platform.
- Using the gas field for hydrogen storage.
- Converting the gas terminal from natural gas to hydrogen.
- The end-users can convert to hydrogen.
In some cases the end-users might even prefer hydrogen to natural gas, to help their own decarbonisation.
I would suspect that there will be a sound economic case to use hydrogen, where wind farms are developed, in the same areas as worked-out gas fields.
- Platform demolition costs are deferred.
- No HVDC link is needed, with an expensive converter station at the shore end.
- The new system comes with energy storage.
The only extra cost might be that an offshore electrolyser is more expensive than an onshore one.
Engineering Resources
The engineering resources needed for a gas pipeline are different to those needed for an electrical system.
But because gas pipelines are a declining industry, they will be readily available.
Less Planning Hassle
There have been some objections to the development of wind farm terminals by Nimbies.
If a terminal is converted from natural gas to hydrogen, I suspect there will be fewer objections.
Better Control Of Wind Farms
There have been stories of wind farms having to be switched off because there is no-one to buy the electricity.
If some form of offshore hydrogen storage is possible, then the electricity can be used to generate hydrogen, which can be piped ashore, when it is needed.
It Won’t Be One Type Fits All
I suspect we’ll see some hybrid systems and other innovative engineering.
Conclusion
I believe that in a drive to cut costs, we’ll see a lot of energy brought ashore as hydrogen gas.
I
The Anonymous Widower 