Holyhead Hydrogen Hub Planned For Wales
The title of this post is the same as that of this article on H2 View.
This is the introductory paragraph.
Plans for a new hydrogen production plant, refuelling and distribution hub have been unveiled for Holyhead, North Wales.
Some other points from the article.
- Unsurprisingly, it will be called the Holyhead Hydrogen Hub.
- Holyhead is the second largest roll-on, roll-off port in the UK.
- There is plenty of potential for renewable energy in the area.
- It will support the port and large scale movements of HGVs.
- There is plenty of potential for renewable energy in the area.
- The hydrogen in future could support trains, ships, public transport and other uses.
In the last year, I’ve read about hydrogen hubs in ports, including Portsmouth and Antwerp, so Holyhead is just following a trend.
Buses Should Have Flat Floors
These pictures were taken inside the lower-deck of one of London’s New Routemaster buses.
Now compare them with pictures taken on the lower deck of one of London’s other hybrid buses, similar to those you see all around the UK.
Note.
- The floor of the New Routemaster is continuous and flat. The only steps are the stairs and up into the sets of four seats.
- The floor of the hybrid bus, which was built on a standard Volvo chassis has several steps.
Recently, when carrying a full bag of shopping down the stairs on the hybrid bus, the driver accelerated away and I fell and banged my knee. Because of the flat floor, it is less likely, I’d have a similar problem on the New Routemaster.
Why Does The Routemaster Have A Flat Floor?
When Wrightbus designed the Routemaster, they had a clean sheet of paper and weren’t constrained to use a proprietary chassis.
- The 18 kWh traction battery is under the front stairs.
- The traction motor is under the floor, in the middle of the bus.
- The small diesel generator is mounted halfway up the back stairs.
- The bus has full regenerative braking to the battery.
Using a standard Volvo chassis might be cheaper, but there can’t be a flat floor.
Will The Wrightbus Hydrogen Bus Have A Flat Floor?
The Wrightbus StreetDeck FCEV is the Wrightbus hydrogen bus and it has entered service in Aberdeen.
It looks to be about half flat floor, but not as good as the Routemaster.
Hopefully, I’ll ride in one soon.
Are Hydrogen-Fuelled Vehicles A Waste Of Our Time And Energy?
The title of this post, is the same as that of this article on Engineering & Technology, which is the magazine of the Institution of Engineering and Technology. So it should be authoritative.
This is the concluding paragraph.
Cars account for 61 per cent of surface transport emissions, HGVs only 17 per cent, buses 3 per cent, and rail 2 per cent (CCC, December 2020) so for cost/benefit it cannot be worthwhile switching to hydrogen fuel cell buses and trains. Through any impartial lens of engineering science, hydrogen fuel cell cars do not appear to be a transport winner and the Government should revisit decisions it has made about related funding. But then there is political virtue signalling.
It is a must-read contribution to the debate, as to whether hydrogen or battery power, is best for surface transport.
I don’t believe there is a simple answer, because for some applications, battery electric power is not feasible because of reasons of power or range.
- Would a battery-electric truck, be able to haul a forty-four tonne load between the Channel Tunnel and Scotland?
- Would a battery-electric locomotive be able to haul a thousand tonne aggregate or stone train for anything but a few tens of miles?
- Is it possible to design a a battery-electric double-deck bus, that can carry seventy passengers?
I believe there are applications, where battery-electric is not a feasible alternative to the current diesel traction.
It is worth noting, that truck-maker; Daimler is planning to have both battery and hydrogen heavy trucks in its product line.
Users will choose, what is the best zero-carbon transport for their needs.
The Black Cab Driver’s Answer
It is always said, that, if you want to know the answer to a difficult question, you ask the opinion of a black cab driver.
So as the new electric black taxis, are the most common electric vehicle, that the average Londoner uses, what do the guys up-front say about their expensive vehicles.
- Regularly, cab drivers complain to me about the range and having to use the diesel engine to charge the battery or power the car.
- Some suggest to me, that hydrogen might be a better way to make the vehicles zero-carbon.
I think they may have a point about hydrogen being a better method of powering a black taxi, when you look at the pattern of journeys and the battery size and charging limitations of the vehicle.
These limitations may reduce in the future, as the technology gets better, with higher density batteries and faster charging.
We could even see a design and sales war between battery and hydrogen black cabs.
It always pays to follow the money!
Sale To Linde Of World’s Largest PEM Electrolyser
The title of this post, is the same as that of this press release on the ITM Power web site.
This is the first paragraph.
ITM Power, the energy storage and clean fuel company, is pleased to announce the sale to Linde of a 24MW electrolyser to be installed at the Leuna Chemical Complex in Germany.
Note.
- Leuna is a few miles to the West of Leipzig.
- As it’s green hydrogen, I would hope it’s not powered with electricity from coal.
I bet they’re pleased.
I said a similar thing, when they got funding for an 8 MW monster, that I wrote about in Funding Award to Supply An 8MW Electrolyser.
The press release says this about the electrolyser.
This new 24 megawatt electrolyzer will produce green hydrogen to supply Linde’s industrial customers through the company’s existing pipeline network. In addition, Linde will distribute liquefied green hydrogen to refueling stations and other industrial customers in the region. The total green hydrogen being produced can fuel approximately six hundred fuel cell buses driving 40 million kilometers and saving up to 40,000 tons of carbon dioxide tailpipe emissions per year.
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.
This would mean that the Leuna electrolyser could be producing nearly four thousand tonnes of hydrogen per year.
Does this mean that every tonne of hydrogen saves ten tonnes of carbon dioxide tailpipe emissions?
AW-Energy Oy Brings Wave Energy Technology To Green Hydrogen
The title of this post, is the same as that of this article on Hydrogen Fuel News.
This is a sub-title.
The company is introducing a new process combining its WaveRoller and HydrogenHub.
It would appear that by combining the two products, AW-Energy can create green hydrogen from wave power.
This page on the AW-Energy web site describes the WaveRoller.
This sentence describes what it does.
The WaveRoller is a device that converts ocean wave energy to electricity.
This page on the AW-Energy web site describes the company’s hydrogen expertise.
It looks to be an interesting combination.
Jaguar Car Brand To Be All-Electric By 2025
The title of this post, is the same as that of this article on the BBC.
It would appear, that some of the larger vehicles will be powered by hydrogen.
But it is an interesting, even if it is an inevitable move.
I find these two paragraphs interesting.
But it has dropped plans to build an electric version of its XJ saloon at the Castle Bromwich plant, meaning the site will eventually stop making cars.
Chief executive Thierry Bolloré said the plant would focus instead on “non-production” activities in the long term, without giving details.
Note.
- Castle Bromwich is a large site.
- It’s probably not in the best place to build thousands of cars.
- Would turning it into a giant battery-pack factory be classed as non-production?
It sounds like there’s a cunning plan.
- As an engineer, I believe, there’s only one way to build an electric car and that is as light in weight as possible to make sure the car goes as far as possible on each charge of the battery.
- So this will mean the sort of construction methods used for Formula One cars and aircraft.
- Will this in turn mean a brand new factory, that makes cars in radically different ways?
I think there’s a lot more to be disclosed.
SSE Goes Global To Reap The Wind
The title of this article on This Is Money is Renewable Energy Giant SSE Launches Plan To Become Britain’s First Global Windfarm Business As it Invests Up To £15bn Over Next Decade.
The title is a good summary of their plans to build wind farms in Continental Europe, Denmark, Japan and the US, in addition to the UK and Ireland.
I can also see the company developing more integrated energy clusters using the following technologies.
- Wind farms that generate hydrogen rather than electricity using integrated electrolysers and wind turbines, developed by companies like ITM Power and Ørsted.
- Reusing of worked out gasfields and redundant gas pipelines.
- Zero-carbon CCGT power stations running on Hydrogen.
- Lots of Energy storage.
I talked about this type of integration in Batteries Could Save £195m Annually By Providing Reserve Finds National Grid ESO Trial.
In the related post, I talked about the Keadby cluster of gas-fired power stations, which are in large part owned by SSE.
Conclusion
I think that SSE could be going the way of Equinor and Ørsted and becoming a global energy company.
It is also interesting the BP and Shell are investing in renewable energy to match the two Scandinavian companies.
Big Oil seems to be transforming itself into Big Wind.
All these companies seem to lack grid-scale energy storage, although hydrogen can be generated and stored in worked-out gas fields.
So I would expect that some of the up-and-coming energy storage companies like Gravitricity, Highview Power and RheEnergise could soon have connections with some of these Big Wind companies.
Batteries Could Save £195m Annually By Providing Reserve Finds National Grid ESO Trial
The title of this post, is the same as that of this article on Current News.
The title gives the findings of the Arenko-led trial.
What Is The National Grid Reserve Service?
It’s all about providing capacity for the National Grid Reserve Service, which is described in this Wikipedia entry. This is the introductory paragraph.
To balance the supply and demand of electricity on short timescales, the UK National Grid has contracts in place with generators and large energy users to provide temporary extra power, or reduction in demand. These reserve services are needed if a power station fails for example, or if forecast demand differs from actual demand. National Grid has several classes of reserve services, which in descending order of response time are: Balancing Mechanism (BM) Start-Up, Short-Term Operating Reserve, Demand Management and Fast Reserve.
The Wikipedia entry is very comprehensive.
A Collateral Benefit
This is a paragraph from the article.
Additionally, unlike CCGT plants, batteries do not need to be producing power in order to provide Reserve as they can charge when there is abundant renewable energy on the grid, and then wait to react when needed. As CCGT’s need to be producing power to provide this service, it can led to renewables switched off in favour of the more carbon intensive fossil fuel generation, to ensure Reserve is available if needed.
The article concludes that Reserve from Storage could help National Grid ESO’s reach their target of net-zero operation by 2025.
Could We Replace CCGT Plants With Batteries?
CCGT or combined cycle gas-turbine power plants are efficient ways to turn natural gas into electricity.
- Typical sizes are around 800 MW.
- They are reasonably quick and easy to build.
- As their fuel comes by a pipeline, they don’t need to be connected to the rail network, unlike biomass and coal power plants.
Because they burn methane, they still emit a certain amount of carbon dioxide, although levels much less than an equivalent coal-fired power station.
In Energy In North-East Lincolnshire, I described the three Keadby power stations.
- Keadby – In operation – 734 MW
- Keadby 2 – Under construction – 840 MW
- Keadby 3 – In planning – 910 MW
In total, these three power stations will have a capacity of 2484 MW.
By comparison, Hinckley Point C will have a capacity of 3200 MW.
Add Keadby 4 and the four CCGTs would provide more electricity, than Hinckley Point C.
I think it would be very difficult to replace a cluster of CCGT gas-fired power stations or a big nuclear power plant with the sort of batteries being deployed today. 2.5 to 3 GW is just so much electricity!
I do believe though, that instead of building a 3200 MW nuclear power plant, you could build a cluster of four 800 MW CCGTs.
But What About The Carbon Dioxide?
Using the Keadby cluster of CCGTs as an example.
- Keadby 2 and Keadby 3 are being built to be upgraded with carbon-capture technology.
- The HumberZero gas network will take the carbon dioxide away for storage in worked-out gas fields in the North Sea.
- Some carbon dioxide will be fed to salad vegetables and soft fruits in greenhouses, to promote growth.
- Keadby 2 and Keadby 3 are being built to be able to run on hydrogen.
- The HumberZero network will also be able to deliver hydrogen to fuel the power stations.
I’m certain we’ll see some of the next generation of wind turbines delivering their energy from hundreds of miles offshore, in the form of hydrogen by means of a pipe.
The technology is being developed by ITM Power and Ørsted, with the backing of the UK government.
- Redundant gas pipelines can be used, to bring the hydrogen to the shore
- The engineering of piping hydrogen to the shore is well-understood.
- Redundant gas pipelines can be used if they already exist.
- Gas networks can be designed, so that depleted gas fields can be used to store the gas offshore, in times when it is not needed.
But above all gas pipelines cost less than DC electricity links, normally used to connect turbines to the shore.
I can see very complicated, but extremely efficient networks of wind turbines, redundant gas fields and efficient CCGT power stations connected together by gas pipelines, which distribute natural gas, hydrogen and carbon dioxide as appropriate.
Could Offshore Hydrogen Storage And CCGTs Provide The Reserve Power
Consider.
- Using a CCGT power station to provide Reserve Power is well understood.
- Suppose there is a large worked out gasfield, near to the power station, which has been repurposed to be used for hydrogen storage.
- The hydrogen storage is filled using hydrogen created by offshore wind turbines, that have built in electrolysers, like those being developed by ITM Power and Ørsted.
- One of more CCGTs could run as needed using hydrogen from the storage as fuel.
- A CCGT power station running on hydrogen is a zero-carbon power station.
Effectively, there would be a giant battery, that stored offshore wind energy as hydrogen.
I can see why the UK government is helping to fund this development by ITM Power and Ørsted.
Could We See Cradle-To-Grave Design Of Gas Fields?
I suspect that when a gas field is found and the infrastructured is designed it is all about what is best in the short term.
Suppose a gas field is found reasonably close to the shore or in an area like the Humber, Mersey or Tees Estuaries, where a lot of carbon dioxide is produced by industries like steel, glass and chemicals!
Should these assessments be done before any decisions are made about how to bring the gas ashore?
- After being worked out could the gas field be used to store carbon dioxide?
- After being worked out could the gas field be used to store natural gas or hydrogen?
- Is the area round the gas field suitable for building a wind farm?
Only then could a long-term plan be devised for the gas-field and the infrastructure can be designed accordingly.
I suspect that the right design could save a lot of money, as infrastructure was converted for the next phase of its life.
Conclusion
It does appear that a lot of money can be saved.
But my rambling through the calculations shows the following.
Wind Turbines Generating Hydrogen Give Advantages
These are some of the advantages.
- Hydrogen can be transported at less cost.
- Hydrogen is easily stored if you have have a handy worked-out gas field.
- The technology is well-known.
Hydrogen can then be converted back to electricity in a CCGT power station
The CCGT Power Station Operates In A Net-Zero Carbon Manner
There are two ways, the CCGT station can be run.
- On natural gas, with the carbon-dioxide captured for use or storage.
- On hydrogen.
No carbon-dioxide is released to the atmosphere in either mode.
The Hydrogen Storage And The CCGT Power Station Or Stations Is Just A Giant Battery
This may be true, but it’s all proven technology, that can be used as the Power Reserve.
Power Networks Will Get More Complicated
This will be inevitable, but giant batteries from various technologies will make it more reliable.
Italy’s Hardest-Hit Covid-19 Region To Become ‘Hydrogen Valley’
The title of this post, is the same as that of this article on Energy Live News.
This is the first paragraphs.
Lombardy, Italy’s hardest-hit Covid-19 region, will soon become home to the ‘country’s first hydrogen valley’.
Enel Green Power has signed a memorandum of understanding (MoU) with the Italian transport group FNM, to purchase new hydrogen-powered trains, replace the current diesel-powered trains and build hydrogen production facilities powered by renewable energy.
These facilities will be constructed to support the journeys of hydrogen trains.
It sounds like good thinking.
Denmark To Build ‘First Energy Island’ In North Sea
The title of this post, is the same as that of this article on the BBC.
This is the first three paragraphs
A project to build a giant island providing enough energy for three million households has been given the green light by Denmark’s politicians.
The world’s first energy island will be as big as 18 football pitches (120,000sq m), but there are hopes to make it three times that size.
It will serve as a hub for 200 giant offshore wind turbines.
It seems to follow the bigger-is-better offshore principle, I talked about in Crown Estate’s Auction Of Seabed For Wind Farms Attracts Sky-High Bids.
The BBC article says this about the energy generation of the island and its turbines.
The new island would supply an initial 3 gigawatts, rising to 10 over time.
For comparison the coal-fired Fiddlers Ferry power station on the banks of the Mersey near Widnes was a 2 gigawatt station and the nuclear Hinkley Point C will hopefully generate 3.2 GW.
These are my thoughts.
The Location Of The Island
According to the BBC, the Danes are being secretive about the location of the island, but the BBC does say this about the location of island.
While there is some secrecy over where the new island will be built, it is known that it will be 80km into the North Sea. Danish TV said that a Danish Energy Agency study last year had marked two areas west of the Jutland coast and that both had a relatively shallow sea depth of 26-27m.
According to Wikipedia, Denmark has a sizeable offshore gas industry and I did wonder, if the island would be built near to a large worked out field, so that the field could be used for one of the following.
- Store hydrogen produced on the island from surplus electricity.
- Store carbon dioxide produced on the mainland.
But the gas fields are further than 80 km. from the shore being closer to where Danish, German, Dutch and British waters meet.
Hydrogen And The Island
In ITM Power and Ørsted: Wind Turbine Electrolyser Integration, I talked about a joint project between, electrolyser company; ITM Power of the UK and turbine manufacturer and developer; Ørsted of Denmark.
The post was based on this press release from ITM Power.
These were points from the press release.
- Costs can be saved as hydrogen pipes are more affordable than underwater power cables.
- It also stated that wind turbines produce DC electricity and that is ideal for driving electrolysers.
So will the island be connected to the mainline by a hydrogen gas line?
- Cost will play a big part.
- I don’t like the concept of electrical cables on the sea floor,
- Gas pipes have been laid everywhere in the North Sea.
- A hydrogen connection might better support different types of future turbines.
- If there is a worked-out gas-field nearby, the hydrogen can be stored offshore until it is needed.
I think it is a distinct possibility.
Hydrogen could be generated in one of two ways.
- Wind turbines based on the ITM Power/Ørsted design could generate the hydrogen directly and a gas network could deliver it to the island.
- Conventional turbines could generate electricity and an electrical network could deliver it to the island, where a large electrolyser would convert water into hydrogen.
Both methods would be better suited to a hydrogen connection to the mainland.
Connection To Other Islands
The Dutch are already talking about a North Sea Wind Power Hub on their section of the Dogger Bank.
So could we see a network of islands in the Southern North Sea?
- Some like the Danish island would support a network of wind turbines.
- Some would store energy as hydrogen in worked-out gas fields.
- Some would store captured carbon dioxide in worked out gas fields.
- Some would supply hydrogen to onshore hydrogen and carbon dioxide networks like HumberZero.
- Islands could be linked by electrical cables or gas pipelines.
- Gas pipelines would allow both hydrogen or carbon dioxide to be stored or moved
The North Sea could become the largest power station in the continent of Europe, or even the world.
The Anonymous Widower 