GWR Trialling Transformative Ultra-Rapid Charging Train Battery
The title of this post is the same as that of this article on Rail Technology Magazine.
This is the sub-heading.
Great Western Railway (GWR) has begun trialling a potentially groundbreaking battery innovation called FastCharge. If the trial is successful, it is hoped that the technology could transform branch line services and accelerate the decarbonisation of the network.
This is the first paragraph.
This innovative system, which has been developed over three years, eliminates the need for diesel trains on branch lines by powering battery-operated units with ultra-rapid charging. The system boasts an impressive 2,000kW charging capacity, eight times more powerful than a Tesla Supercharger, allowing trains to fully recharge in just 3.5 minutes at West Ealing station, the trial’s first real-world location.
I took these pictures of the trial installation at West Ealing station, this morning.
Note.
- Platform 5 is used by the trains to and from Greenford station.
- Two sets of charging rails have been installed between the rails, in Platform 5.
- The rails in the charging rails could be aluminium. This would not be surprising, as it is a good electrical conductor.
- The two shorter outside charging rails could be connected together.
- The yellow parts of the charging rails are plastic, so are probably for warning purposes.
- Two white containers have been installed alongside the track.
In Great Western Railway Updates EHRT On Its Upcoming Operational Trial Of Fast Charge Tech, I described the components of the Fast Charge system in this paragraph.
The Fast Charge system consists of three key components: retractable charging shoe gear, which is mounted to the underframe of the train; short (4m) charging rails mounted between the underframe of the train; and the Fast Charge Battery Bank (FCBB) installed beside the track, acting as an energy buffer between the train and the grid.
The charging rails are clearly visible in my images and the Fast Charge Battery Bank is probably in the white containers.
These are my thoughts.
The Engineering Is Of A High Quality
Or it certainly appears so from the platform and in the pictures, that I took.
How Much Energy Will Be Taken On Board at Each Charge At West Ealing?
According to the Rail Technology Magazine article, the Fast Charge Battery Bank will have to supply 2,000 KW for 3.5 minutes to fully-charge the train at West Ealing station.
This is 7,000 KW-minutes or 117 KWh.
In D-Train Order For Marston Vale Confirmed, this is said about the batteries on a Class 230 train.
- The train has four battery rafts, each with a capacity of 106 kWh
- Range is up to fifty miles with a ten minute charge at each end of the journey.
- Range will increase as battery technology improves.
I wonder if the Class 230 train, that will run between West Ealing and Greenford, will only have one 106 kWh battery.
- This will be less weight and therefor better acceleration.
- 117 kWh in the Fast Charge Battery Bank will be sufficient to fully-charge the single battery.
- The route is only five miles for a round trip.
I can see costs dropping.
What Batteries Will Be Used In The Fast Charge Battery Bank?
I think there are four main possibilities.
- New lithium-ion batteries
- Refurbished second-hand electric vehicle batteries
- New lead-acid batteries.
- It might be possible to use supercapacitors
Note.
- Lead-acid batteries can lose charge in cold weather.
- Supercapacitors don’t care about the weather.
- The weight of lead-acid batteries would not be a problem in a stationary application.
If there is only one battery on the train, I can see the supercapacitors handling it.
What Voltage Is Used In The Charging Rails?
Consider.
- The Vivarail Class 230 trains are built from redundant London Underground D78 Stock trains.
- The D78 Stock trains were built to run on London Underground lines, when that had voltages of 0 and 630 VDC.
- So I wouldn’t be surprised if the trains were designed around this voltage.
- If the charging rails worked at 630 VDC, then to have a 2,000kW charger, this would mean a charging current of 3175 Amps.
This would explain the fat cables connecting the charging rails to the Fast Charge Battery Bank.
An alternative voltage to use could be 3,000 VDC, as some trains are built to this voltage and therefor the electronics and transformers must be available. This would reduce the charging current to 667 Amps, which might be able to use smaller cables.
It may come down to what is convenient for the output voltage of the batteries.
Why Are There Two Sets Of Charging Rails?
They are both shown in this image.
Note.
- The two sets of charging rails are about forty metres apart.
- The Fast Charge Battery Banks are another twenty metres further on.
It’s not the layout you’d expect for running a single two-car train running every half hour.
But could it be that two separate sets of charging rails can operate a more frequent service with this layout of charging rails?
Battery Traction Trial Ahead As TransPennine Express Fortunes Improve
The title of this post, is the same as that of this article on Railway Gazette International.
This is the sub-heading.
Overcrowding and short-notice cancellations at state-owned TransPennine Express have declined since the December timetable change, prompting Managing Director Chris Jackson to suggest the operator is in a ‘better place’.
It is a must-read article and the section called Battery Power Trial, says this.
Meanwhile, the Class 802 trainset which was damaged in a shunting accident in March 2022 remains out of traffic. Although No 802 207 has now been repaired, it will not be returning to service yet, as it is receiving modifications for use as a battery testbed.
This will see a 6 m long, 2·2 m wide battery module installed in place of one of the existing engines, which will improve fuel efficiency by using two diesel powerpacks rather than three.
The battery module will provide top-up power for peak demand and give regenerative braking capability when operating in diesel mode, which the trains currently do not have. Arrival and departure at stations is also to be trialled in battery mode to assess noise and air-quality improvements. The train is planned to re-enter traffic in December.
‘We’re supplying that unit to support what we think is a sensible industry scheme to look at whether we can do something to move from bi-mode to tri-mode, which could be beneficial for the industry from a green perspective’, Jackson confirms.
That looks to be a good plan, but I can’t help feeling that battery power for the Class 802 trains has been a long time coming.
This press release from Hitachi is entitled Hitachi And Eversholt Rail To Develop GWR Intercity Battery Hybrid Train – Offering Fuel Savings Of More Than 20%, which announced the project was published on the 15th December 2020.
It will be four years from when Hitachi and Eversholt Rail said go, before the prototype is running.
Is this why LNER bought their new trains from CAF?
Designing A Battery-Powered Mountain Goat
When I wrote Up To Ebbw Vale From Newport, this comment was posted.
I’m not surprised that the Class 150 train, had no difficulty in climbing up to Ebbw Vale Town. The max gradient is around 1 in 65. There are plenty of places in Britain where gradients are steeper and indeed part of the type test for all dmus was to climb the 2 mile, 1 in 37.7 Lickey Incline starting a couple of hundred metres before the beginning of the slope.
It certainly got me thinking.
Could a line like Newport and Ebbw Vale be decarbonised, by simply fitting batteries to an appropriately-sized electric train?
- The battery would be charged using the 25 KVAC overhead electrification in Newport station.
- The train would climb the hill to Ebbw Vale Town on battery power.
- Coming down the regenerative braking would charge the battery.
- Once in the platform at Newport station, the battery would be topped up, to the level needed to climb the hill, from the existing electrification.
The question is can the train carry enough juice in a battery?
I will work the example through with a three-car Class 331 train.
- I have chosen a Class 331 train, as CAF have a factory in Newport.
- The train weighs 30.48 tonnes.
- It has 213 seats.
- If I assume that each passenger is 80 Kg including baggage, bikes and buggies, that gives a mass of 17.04 tonnes or a total mass of 47.08 tonnes.
- The difference in altitude between Ebbw Vale Town and Newport is 764 feet.
Using Omni’s Potential Energy Calculator, that gives a value of 29.9 kWh.
This OpenRailwayMap shows the tracks from Newport to Pye Corner.
Note.
- Red tracks are electrified and black ones are not.
- Newport station is in the North-East corner of the map, with the South Wales Main Line running through.
- Pye Corner station is marked by the blue arrow and is the first station on the climb to Ebbw Vale.
- The unelectrified Ebbw Vale branch has a triangular junction with the electrified South Wales Main Line.
- The electrification continues for a short way towards Pye Corner and goes all the way to Newport and Cardiff.
- Trains take 24 minutes to turn round in Newport.
- Newport and Ebbw Vale Town is about twenty miles.
It can be safely said that trains will start their climb to Ebbw Vale with a full battery.
What Battery Size Will Be Needed?
I don’t think it will be that large and it will be the smallest battery, that could take a train up the hill.
As part of the climb is double track, the up track could be electrified to enable a smaller battery to be used, which would mean less power would be needed, due to the lower weight.
Conclusion
I believe that it will be possible to fit CAF’s Class 331 trains with a battery large enough to take a train up the hill to Ebbw Vale Town.
Northumberland Line ‘Phased Reopening’ By Summer
The title of this post, is the same as that as this article on the BBC.
These are the first three paragraphs.
The Northumberland Line will partially reopen this summer days after it was announced it would not be in service until the end of 2024.
Conservative county council leader Glen Sanderson said there had been “challenges” with the project, but when fully reopened the rail line would be a “game changer” for travellers.
The stations due to be open in the summer are Seaton Delaval, Ashington and Newsham.
In my lifetime, the Victoria, Jubilee and Elizabeth Lines in London, have opened on a phased manner.
So why shouldn’t the Northumberland Line?
In fact given the route, it could be opened with a shuttle between Ashington and Newcastle stations, to train drivers and test the concept.
- The intermediate stations could be added over a couple of years.
- I would add a station with lots of parking early.
- If the views live up to the pictures, a lot of passengers will have a day out for the views.
- I’m sure enthusiasts and locals, especially with their kids will be exploring this short railway in droves.
To me, this is definitely a line, that will suffer from London Overground Syndrome.
This OpenRailwayMap shows the railways to the North of Newcastle.
Note.
- The red track is the electrified East Coast Main Line.
- Ashington station is at the top of the map and is marked by a blue arrow.
- The blue track is the Tyne and Wear Metro.
- Newcastle station is where the Metro crosses the East Coast Main Line at the bottom of the map.
- The black trackrunning North-South to the East of the East Coast Main Line is the Northumberland Line.
This OpenRailwayMap shows the railways to the North of Ashington.
Note.
- The red track is the electrifed East Coast Main Line.
- Ashington station is at the bottom of the map and is marked by a blue arrow.
- There are a few disused colliery lines to the North of Ashington.
I believe that these railways to the North of Newcastle could and should be developed.
The East Coast Main Line Is Congested
Consider.
- The East Coast Main Line has only two tracks.
- It is one of only two rail routes between England and Scotland.
- It carries local services as well as long distance express services.
- In recent years more services have been added by Lumo and TransPennine Express.
It is my belief that applying digital signalling between Newcastle and Edinburgh via Berwick, should be a high priority project to increase the capacity of the East Coast Main Line.
Local Services Can Be Extended
The Northumberland Line opens up possibilities for extension, where track already exists..
- From Ashington to Newbiggin-on-Sea and Lynemouth.
- From Bedlington to Morpeth and the East Coast Main Line.
- From Bedlington to North Blyth.
It would appear that it might be possible to run a new line North from Ashington to connect with the East Coast Main Line.
Distances Are Short
Consider.
- Ashington and Newcastle is 20.6 miles
- Newcastle and Morpeth is 16.6 miles
- Newcastle and Berwick is electrified.
- In The Data Sheet For Hitachi Battery Electric Trains, I stated that Hitachi’s battery-electric express trains have a range of 43.5 miles on one battery. A slower commuter train would certainly achieve this distance.
I have a feeling that a passenger-friendly network of battery-electric trains can be developed along and around the Northumberland Line and the East Coast Main Line.
Slow Tourism Train Operator Launches First Service
Tyhe title of this post, is the same as that of this article on Railway Gazette.
These are the first two paragraphs.
FS Group’s recently formed tourist train business FS Treni Turistici Italiani has launched its first service.
Branded Espresso Cadore, the overnight service between Roma Termini and Calalzo-Pieve di Cadore-Cortina will run every Friday night until mid-February. On arrival, a connecting bus takes passengers to Cortina d’Ampezzo in 45 min. The return train departs on Sundays, arriving at Roma Termini on Monday morning.
It is surely an interesting concept and I believe it could work on several routes in the UK.
- Settle and Carlisle would be an obvious route.
- Cumbrian Coast Line.
- Bristol and Oxford, which I wrote about in Leisure Market Boom? GWR’s Vision For Direct Bristol-Oxford Services.
There must also be a couple of routes in Scotland and Wales.
As the three routes, I named are electrified at both ends, there is a possibility that they could be run by quiet battery-electric trains.
Leisure Market Boom? GWR’s Vision For Direct Bristol-Oxford Services
The title of this post, is the same as that of this article on Rail Magazine.
This is the first paragraph.
Great Western Railway has hopes on running direct services between Bristol Temple Meads and Oxford from September 14, subject to approval of its new trial proposal by the Department for Transport and Network Rail. The move is a test of growth in demand for leisure travel by train.
It is an interesting idea.
These are some points about the service, given in the article.
- The route will be via Swindon, Chippenham and Bath Spa.
- Fastest journey time would be 71 minutes.
- The route will be aimed at the leisure market.
- There will be two trains per day (tpd) in each direction on Saturdays.
This is GWR’s handy route map.
These are my thoughts.
Will The Trains Call At Didcot Parkway?
This OpenRailwayMap shows Didcot Parkway station and the large triangular junction, that connects Oxford to the Great Western Main Line.
Note.
- The red tracks are the Great Western Main Line.
- The blue arrow indicates Didcot Parkway station.
- Oxford station is about ten miles to the North.
- Chords in the junction allow trains to go between Oxford and Paddington and Oxford and Swindon, with or without a stop at Didcot Parkway station.
The article says that GWR has asked to run the following services.
- 1018 Bristol Temple Meads-Oxford – Would arrive at Oxford at 1129.
- 1155 Oxford-Bristol Temple Meads (via Didcot) – Would arrive at Bristol Temple Meads at 1306.
- 1518 Bristol Temple Meads-Oxford – Would arrive at Oxford at 1629.
- 1712 Oxford-Bristol Temple Meads – Would arrive at Bristol Temple Meads at 1823.
Note.
- I suspect that the 1155 will reverse at Didcot Parkway station.
- There is a two train per hour (tph) service between Didcot Parkway and London Paddington stations.
- It looks like the four services could be run by a single train shuttling up the Great Western Main Line.
Would it be sensible if all Oxford and Bristol trains called at Didcot Parkway station, so that travellers could use the London service to their advantage?
But, calling at Didcot Parkway station would slow the service as there would need to be a reverse.
What Class Of Train Would Be Used?
Consider.
- A Bristol and Didcot Parkway via Bath Spa service takes 55 minutes.
- This is an average speed of 71.1 mph over a distance of 65.2 miles.
- 24.4 miles at the Bristol end of the route is not electrified.
- 10.3 miles at the Oxford end of the route is not electrified.
- The four services can be run by a single train shuttling up the Great Western Main Line.
It looks to me, that a bi-mode train with good performance is needed.
So I suspect that a five-car Class 800 or Class 802 train will be used.
Will The Train Be Battery-Electric Powered?
This is an interesting possibility.
- An ideal route for a battery electric train, is surely one with a long electrified section in the middle, which can be used to fully charge the train’s batteries.
- The train would have to run for 48.8 miles on its own power at the Bristol end of the route.
- The train would have to run for 20.6 miles on its own power at the Oxford end of the route.
The data sheet for a battery-electric Class 800/802 train can be downloaded from this page on the Hitachi web site.
In a section on the page, which is entitled Intercity Battery Trains, this is said.
A quick and easy application of battery technology is to install it on existing or future Hitachi intercity trains. Adding just one battery reduces emissions by more than 20% and offers cost savings of 20-30%.
Our intercity battery powered trains can cover 70km on non-electrified routes, operating at intercity speeds at the same or increased performance. Hitachi Rail’s modular design means this can be done without the need to re-engineer or rebuild the train and return them to service as quickly as possible for passengers.
The range of 70 km is 43.5 miles, which would appear to be a little bit short to go from the end of the electrification at Chippenham to Bristol Temple Meads and back.
But various measures could be taken to make sure the train can handle the route.
- The regenerative braking strategy could be used to conserve battery power.
- A second battery could be added to the train.
- Methods to charge the train at Bristol Temple Meads could be installed.
As London Paddington and Bristol Temple Meads is an important route, I suspect that Hitachi and Great Western Railway have a strategy to handle trains from Chippenham and sending them back.
Could This Route Be A Trial Route For Battery-Electric Trains?
Consider.
- Hitachi and Great Western Railway wouldn’t want to introduce an unreliable train without full full testing.
- Trains can probably limp to either Stoke Gifford or Reading depots, after a battery failure.
- Great Western Railway could test a new route.
- A full test only needs one train.
- Passenger reaction to a battery-electric train can be assessed.
- Staff need to be trained.
- The route can be run by a standard bi-mode if required.
- It could be the world’s first high-speed battery-electric train.
- Enthusiasts would flock to have a ride.
Could this be a trial service to make sure everything goes right?
Great Western Railway Updates EHRT On Its Upcoming Operational Trial Of Fast Charge Tech
The title of this post, is the same as that of this article on Electric and Hybrid Rail Technology.
This is the sub-heading.
Great Western Railway’s senior program manager, Sonya Johns, speaks to Electric & Hybrid Rail Technology about the firm’s progress on developing ex-Vivarail Fast Charge technology for battery-powered trains, ahead of operational trials due to commence in 2024.
The article is a must-read as it describes the progress since First Group, acquired the assets and intellectual property of Vivarail and its Fast Charge battery train technology.
This paragraph describes the components of the Fast Charge technology.
The Fast Charge system consists of three key components: retractable charging shoe gear, which is mounted to the underframe of the train; short (4m) charging rails mounted between the underframe of the train; and the Fast Charge Battery Bank (FCBB) installed beside the track, acting as an energy buffer between the train and the grid.
This paragraph outlines the benefits of the system.
The Fast Charge system has several benefits, according to Johns, including high charging power, enabling the train to be recharged in around 10 minutes; a standard DNO connection, avoiding costly power supply upgrades; full automation, with no driver interaction required; low safety risk (the charging rails are never live unless fully covered by the train); and minimal disruption during installation, as the FCBB is manufactured offsite and the charging rails are attached to existing sleepers.
This sounds like a system, that has been designed by someone fed up with regulators saying no to innovative ideas.
Other points from the article include.
- The shoe gear has been designed to be easily installed on any rolling stock.
- The one-year trial of the Fast Charge technology and the Class 230 battery train on the West Ealing and Greenford line will commence in spring 2024.
- GWR will capture and analyze data during the trial to understand how the technology performs in different conditions.
The article finishes with this paragraph.
The work, according to GWR, is part of its commitment to reduce the carbon emissions of its train fleet with a view to removing all diesel-only traction from the network by 2040, in line with the Government’s Transport Decarbonisation Plan.
Adrian Shooter would have been pleased if he was here to see it.
Crafty Electrification On The Rhymney Line
I was puzzled on Wednesday, when I took the Class 231 train to Caerphilly on the Rhymney Line, when I saw no signs of electrification.
These are pictures I took at Caerphilly station.
These two OpenRailwayMaps show the tracks through Caerphilly.
Note.
- The map on the left shows infrastructure, with the Rhymney Line shown in yellow.
- Caerphilly station is in the top third of the map.
- The white section of the Rhymney Line is the Caerphilly tunnel.
- The map on the right shows electrification, with the sections of the Rhymney Line that will be electrified are shown in red.
- Black sections will not be electrified.
- North of Caerphilly, the Rhymney Line is electrified, but through the station and the Caerphilly tunnel, there will be no electrification.
Trains will use battery power, where there is no electrification.
This article on Modern Railways gives more information.
This OpenRailwayMap shows the electrification around Cardiff Central and Queen Street stations.
Note.
- Electrified lines are shown in red.
- Unelectrified lines are shown in black.
- The four-platform Cardiff Queen Street station is marked by the blue arrow in the North-East corner of the map.
- There appears to be no plans for electrification in Cardiff Queen Street station.
- The electrified line across the map is the South Wales Main Line.
- The nine-platform Cardiff Central station sits on the South Wales Main Line.
- The main line platforms at Cardiff Central station are electrified, but it appears that Platforms 6.7 and 8. that will serve the South Wales Metro, will not be electrified.
- The line going to the South-East is the branch to Cardiff Bay station.
- The Southern part of this branch appears to be planned to be electrified. so that it can charge the tram-trains before they return North.
This article on Modern Railways says this about catenary-free sections (CFS) in the electrification of the South Wales Metro.
Catenary-free sections are concentrated on areas where it is disproportionately expensive to erect overhead wires. These include the area around Cardiff Queen Street station and the adjacent junction, which has complicated switches and crossings. North of Queen Street, the Cathays area adjacent to Cardiff University and the hospital would present a significant electromagnetic compatibility challenge, so a CFS avoids this complication. Other catenary-free areas will include Pontypridd, where the station features listed canopies and the track is curved, and around the new depot at Taff’s Well, where there will be a significant number of new switches and crossings as well as challenges around highway bridges.
I am in touch with two major electrification companies and I am sure we’ll be seeing a lot more crafty electrification and the use of battery-electric trains.
The Data Sheet For Hitachi Battery Electric Trains
Was I just slow to spot this data sheet or has it only just been released?
You can download a copy from this page on the Hitachi web site.
In a section on the page, which is entitled Intercity Battery Trains, this is said.
A quick and easy application of battery technology is to install it on existing or future Hitachi intercity trains. Adding just one battery reduces emissions by more than 20% and offers cost savings of 20-30%.
Our intercity battery powered trains can cover 70km on non-electrified routes, operating at intercity speeds at the same or increased performance. Hitachi Rail’s modular design means this can be done without the need to re-engineer or rebuild the train and return them to service as quickly as possible for passengers.
These are my initial thoughts.
Plug-and-Play
It looks like the train is plug-and-play.
A diesel engine will be swapped for a battery-pack and the train’s computer controls the power sources accordingly.
Hitachi’s Battery Philosophy Explained
This is said on the data sheet.
Battery technology has the potential to play a significant role in the future of sustainable rail mobility, setting
the rail industry on the path to full intercity decarbonisation by 2050.
Installing batteries on intercity trains can complement electrification and provide a low emission alternative
to domestic air travel.Our retrofit solution for intercity trains offers phased replacement of diesel engines at the time that they would
have been due for their regular heavy maintenance overhaul, replacing each engine in turn until trains are fully battery electric. The solution delivers fuel cost savings and lowers CO2 emissions by at least 20% for every engine replaced, and a 20% reduction in whole life maintenance costs – well within the battery’s life span of 8-10 years.
Performance On Battery Power
The data sheet gives these bullet points.
- 750kW peak power
- Weight neutral.
- At least 20% lower CO2 emissions
- 70km on non-electrified routes
- 20% reduction in whole life maintenance costs
- Up to 30% fuel cost savings
- Zero emissions in and out of stations
- Charge on the move
- 10 year life span
Note.
- 750 kW peak power, is around the power of the diesel-engine, that will be replaced.
- I wouldn’t be surprised that powerwise, the battery pack looks like a diesel engine.
- Weight neutral means that acceleration, performance and handling will be unchanged.
- Batteries are easier to maintain than diesels.
- It is stated that a train can be fully-decarbonised.
I have a feeling these trains are no ordinary battery-electric trains.
Seventy Kilometre Range On Battery
Seventy kilometres is 43.5 miles.
This may not seem much, but the data sheet says this.
Our battery hybrid trains can cover 70km on non-electrified routes, operating at intercity speeds at the same
or increased performance. By identifying the routes with short non-electrified sections of 70km or less, we could
see the replacement of existing diesel trains with fully battery-operated trains on those routes within a year.
And, using battery power to avoid electrifying the hardest and most expensive areas, such as tunnels and bridges,
enables flexibility on electrification, minimising passenger disruption during upgrades.
Note.
- It looks like the trains can operate at 125 mph on battery power, where the track allows it. But then the rolling restistance of steel wheel on steel rail, is much lower, than that of rubber tyres on tarmac.
- Hitachi seem to have developed a philosophy on how the trains will be used.
- Hitachi’s pantographs, go up and down with all the alacrity of a whore’s drawers. They will be ideal for a short length of electrification.
I think these LNER routes could be immediately decarbonised.
- LNER – London and Harrogate , where only 18.3 miles is unelectrified. Trains may not need charging, as a full battery could handle both ways.
- LNER – London and Hull, where 36.1 miles is unelectrified. A short length of electrification to charge trains would be needed at Hull.
- LNER – London and Lincoln, where only 16.7 miles is unelectrified. Trains would not need charging, as a full battery could handle both ways.
- LNER – London and Middlesbrough, where only 20.3 miles is unelectrified. Trains would not need charging, as a full battery could handle both ways.
Note.
- It looks like some services could start fairly soon, once batteries are available.
- Hull Trains could use the 70 km batteries and charging at Hull, as it passed through. This would decarbonise Hull Trains passenger operations.
- Services to Aberdeen, Cleethorpes and Inverness would be out of range of the initial Hitachi trains.
Could the last point, partially explain the purchase of the CAF tri-mode trains, which I wrote about in First Tri-Mode Long Distance Trains For The East Coast Main Line?
We shall see what we shall see.
But having a choice of battery-electric or tri-mode trains will enable route development and decarbonisation.
What Is The Size Of The Battery Pack?
In How Much Power Is Needed To Run A Train At 125 Or 100 mph?, I estimated that to maintain 125 mph, a Class 801 train has a usage figure of 3.42 kWh per vehicle mile.
If a five-car Class 800 can run 70 km or 43.5 miles at 125 mph, as indicated by Hitachi, then the battery size can be calculated.
3.42 * 5 * 43.5 = 743.85 kWh
As the battery pack can supply 750 kW according to the data sheet, this looks like this will run the train for an hour.
Is that coincidence or a design criteria?
What Battery Capacity Would Be Needed For A Hundred Miles?
For a five-car train, this is the energy needed for a hundred miles.
3.42 *5 * 100 = 1710 kWh or three batteries.
For a nine-car train, this is the energy needed for a hundred miles.
3.42 *9 * 100 = 3078 kWh or five batteries.
It looks like all diesel engines will be replaced by batteries.
Will Class 801 Trains Swap Their Single Diesel Engine For a Battery Power Pack?
Consider.
- Class 801 trains have a single diesel engine for emergency power.
- Lumo’s Class 803 trains, are all-electric with a battery-pack for emergency hotel power only.
- Hitachi must have full details on the performance of Lumo’s trains.
- The East Coast Main Line is notorious for the wires to come tumbling down.
- The diesel engine and the battery pack appear to weigh the same.
- Batteries cost less to maintain than diesels.
I can’t see why the single diesel engine can’t be replaced by a standard battery pack, without loosing any functionality.
What Would Be The Range Of A Fully Battery-Electric Train?
This is a paragraph from a data sheet.
Our retrofit solution for intercity trains offers phased replacement of diesel engines at the time that they would
have been due for their regular heavy maintenance overhaul, replacing each engine in turn until trains are fully battery electric. The solution delivers fuel cost savings and lowers CO2 emissions by at least 20% for every engine replaced, and a 20% reduction in whole life maintenance costs – well within the battery’s life span of 8-10 years.
Note.
- It looks like Hitachi are expecting operators to replace engines in turn.
- Replacing engines with batteries saves the operators money.
As a five-car Class 800 train has three diesel engines and a nine-car train has five engines, does this mean that the range of fully-batteried Class 800 train is 70 km or 210 km?
- A fully-batteried Class 800 train will weigh the same as the current diesel.
- One battery can drive the train for 70 km at 125 mph according to Hitachi.
- There are no branches of electrified lines that are 125 mph lines without electrification.
- I would assume that the train can use regenerative braking to recharge the batteries.
- 210 kilometres is 130 miles.
I don’t know much about the electrical systems of Hitachi’s trains, but it is likely that there will be an electrical bus to distribute power from one end of the train to the other.
So a five-car Class 800 train with three fully-charged battery packs could have over 2 MWh of electricity on board, that could be used for traction.
- Applying the usage figure of 3.42 kWh per vehicle mile, gives a range for the five-car train of at least 117 miles.
- The equivalent figure for a nine-car train will be at least 121 miles.
These distances would open up routes like these on the East Coast Main Line.
- LNER – London King’s Cross and Aberdeen – 91.4 miles – Charge before return.
- LNER/Hull Trains – London King’s Cross and Beverley via Temple Hirst junction – 44.3 miles – No Charging needed before return.
- Grand Central – London King’s Cross and Bradford Interchange via Shaftholme junction – 47.8 miles – No Charging needed before return.
- LNER – London King’s Cross and Cleethorpes via Newark and Lincoln – 63.9 miles – Charge before return.
- LNER – London King’s Cross and Harrogate via Leeds – 18.3 miles – No Charging needed before return.
- LNER – London King’s Cross and Inverness– 146.2 miles – Charge before return.
- LNER/Hull Trains – London King’s Cross and Hull via Temple Hirst junction – 36.1 miles – No Charging needed before return.
- LNER – London King’s Cross and Middlesbrough via Northallerton – 20.3 miles – No Charging needed before return.
- LNER – London King’s Cross and Scarborough via York – 42.1 miles – No Charging needed before return.
- LNER/Grand Central – London King’s Cross and Sunderland via Northallerton – 47.4 miles – No Charging needed before return.
Note.
- The miles are the longest continuous distance without electrification.
- Only Aberdeen, Cleethorpes and Inverness would need to charge trains before return.
- Inverness may be too far. But is it in range of LNER’s new CAF tri-mode trains?
The battery range would also allow LNER to use the Lincoln diversion on the Joint Line.
Why Didn’t LNER Buy More Azumas?
This puzzles me and I suspect it puzzles other people too.
Surely, an all Azuma fleet will be easier to manage.
But in this article on Modern Railways, which is entitled LNER Orders CAF Tri-mode Sets, this is said.
Modern Railways understands the new fleet will be maintained at Neville Hill depot in Leeds and, like the ‘225’ sets, will be used predominantly on services between London and Yorkshire, although unlike the ‘225s’ the tri-modes, with their self-power capability, will be able to serve destinations away from the electrified network such as Harrogate and Hull.
Note.
- Hull would possibly need work to provide some form of charging for battery-electric Azumas, but Harrogate is close enough to be served by a one-battery Azuma.
- The CAF Tri-mode sets would certainly handle routes like Cleethorpes, Middlesbrough and Sunderland, but would they really need a ten-car train.
- Ten-car trains would also be busy on the Leeds route.
- The UK is going to need more 125 mph trains for Cross Country, Grand Central, Grand Union, TransPennine Express and possibly other train companies.
- Has Hitachi got the capacity to build the trains in the UK?
So has the Government given the order to CAF to create a level of competition?
Conclusions
These are my conclusions about Hitachi’s battery packs for Class 80x trains, which were written in November 2023.
- The battery pack has a capacity of 750 kWh.
- A five-car train needs three battery-packs to travel 100 miles.
- A nine-car train needs five battery-packs to travel 100 miles.
- The maximum range of a five-car train with three batteries is 117 miles.
- The maximum range of a nine-car train with five batteries is 121 miles.
As battery technology gets better, these distances will increase.
Hitachi have seen my figures.
They also told me, that they were in line with their figures, but new and better batteries would increase range.
In July 2025, I wrote Batteries Ordered For Grand Central Inter-City Trains, which mentions the following.
- Grand Central’s trains will be electric-diesel-battery hybrid inter-city trainsets.
- The trains will have lithium ion phosphate batteries.
- The trains will be delivered in 2028.
- The batteries will be smaller and more powerful, than current batteries.
This is also said about safety, hazards and cybersecurity.
The Safety Integrity Level 2 and IEC 61508 compliant battery management system will detect and mitigate hazards and meet the IEC 62243 cybersecurity standard.
These batteries would appear to give Hitachi and Grand Central Trains everything they want and need.
It looks like the new battery chemistry, will give Hitachi extra range.
Grand Central Trains And CAF’s Tri-Mode Trains
In First Tri-Mode Long Distance Trains For The East Coast Main Line, I wrote about LNER’s purchase of a new fleet of ten CAF tri-mode trains to work services between London and Yorkshire.
In this press release from LNER, which is entitled First Tri-Mode Long Distance Trains For The East Coast Main Line, this is a paragraph.
This new fleet of trains will keep LNER on track to reduce its emissions by 67 per cent by 2035 and be net zero by 2045. LNER has already reduced carbon emissions by 50 per cent compared with 2018/19. Per mile, LNER trains produce 15 times less carbon emissions than a domestic flight.
I believe that as they compete over similar routes with LNER, that Grand Central Trains will have to implement a similar decarbonisation strategy or their business will suffer.
The new trains for Grand Central Trains, will need to have the following conditions.
Train Length
Consider.
- The train must be able to fit all the platforms it will use.
- Ten-cars may be too long for some of the platforms.
- Train length should also be long enough to capture as much of the market as possible.
But as adjusting the length of trains is an easy process, I suspect all manufacturers will be happy to supply extra carriages.
Distances Without Electrification
These are the distances on Grand Central Trains’s services without electrification.
- Doncaster and Bradford Interchange – 52.1 miles
- Northallerton and Sunderland – 47.4 miles
A battery-electric train with a battery range of 110 miles would probably be able to reach Sunderland and return, after charging on the main line.
But a CAF tri-mode train, which ran on diesel or a suitable sustainable fuel like biodiesel or HVO wouldn’t give the driver, operator or passengers any worries.
Possible Time Savings To Bradford
Digital signalling is being installed on the East Coast Main Line between Woolmer Green and Dalton-on-Tees, which will allow running on the line up to 140 mph.
- Woolmer Green is 132.1 miles South of Doncaster.
- A typical train time by Grand Central Trains is 75 minutes.
- This is an average speed of 110 mph.
- Trains take typically three hours and eight minutes between London and Bradford Interchange.
I can build a table of timings and savings at various average speeds.
- 120 mph – 66 minutes – 9 minutes
- 125 mph – 63 minutes – 12 minutes
- 130 mph – 61 minutes – 14 minutes
- 140 mph – 57 minutes – 18 minutes
Several times, I have timed an Hitachi train running at 125 mph on routes like the East Coast Main Line, Great Western Main Line, Midland Main Line and West Coast Main Line, so I have no doubt, that London and Bradford Interchange services can be less than three hours.
These journey time savings will be available to any train able to use the digital electrified railway to the South of Doncaster.
Possible Time Savings To Sunderland
Dalton-on-Tees, where the first phase of the digitally signalling will end, is North of Northallerton, so once the Sunderland train is on the East Coast Main Line, it will be a digital electrified railway all the way to Woolmer Green.
- Woolmer Green is 194.6 miles South of Northallerton.
- A typical train time by Grand Central Trains is 151 minutes.
- This is an average speed of 77.3 mph.
- Trains take typically three hours and twenty-eight minutes between London and Sunderland.
I can build a table of timings and savings at various average speeds.
- 120 mph – 97 minutes – 54 minutes
- 125 mph – 93 minutes – 58 minutes
- 130 mph – 89 minutes – 62 minutes
- 140 mph – 83 minutes – 68 minutes
It looks like times of two hours and thirty minutes will be possible between between London and Sunderland.
Will The Trains Need A 140 mph Capability?
Trains will need to average 125 mph on the digital electrified East Coast Main Line to get under three hours for Bradford Interchange and 2½ hours for Sunderland, so I feel a 140 mph capability is required between Northallerton and London.
Could The Trains Split And Join At Doncaster?
High speed paths on the digitally signalled and electrified East Coast Main Line might be at a premium, so running pairs of five-car trains to two destinations could be commonplace working.
- It could be a way of increasing frequency to Bradford Interchange and Sunderland, by perhaps running pairs of five-car trains that split at Doncaster.
- Grand Union Trains have proposed in the past to use splitting and joining to run services to Cleethorpes.
As Hitachi trains can split and join, I suspect that the CAF tri-mode trains will be at least able to be retrofitted with the ability.
Conclusion
These are my conclusions.
- The digital signalling certainly gives good time saving to Yorkshire and the North-East
- New trains for Grand Union Trains would give them faster services on their existing routes.
- Trains with a 140 mph capability would be needed.
- CAF tri-mode trains wouldn’t need any new infrastructure, but battery-electric trains may need chargers at the destinations.
- Because of the lower infrastructure requirements, I think the CAF trains will get the nod.
The Anonymous Widower 