ORR’s Policy On Third Rail DC Electrification Systems
The title of this post is the same as that of a document I downloaded from this page on the Office of Rail and Road web site.
It is one of the most boring legal documents, that I have ever read and I have read a few in my time.
As I read it, effectively it says that new third-rail electrification is banned because of Health and Safety issues, which take precedence.
But only once in the document is new technology mentioned, that might make third-rail safer and that is a reference to the Docklands Light Railway, where the third rail is shielded.
I am an Electrical Engineer and I was designing safety systems for heavy industrial guillotines at fifteen as a vacation job in a non-ferrous metals factory.
One design of an ideal electric railway would have battery-electric trains, that were charged in stations by third-rail. The third-rail would only be energised, when a train was over the top and needed to be charged. In effect the train would act as an all-enclosing guard to the conductor rail.
Electrification Of The West Of England Main Line
The West of England Main Line runs between Basingstoke and Exeter via Salisbury. It is one of the longest, if not the longest main lines in England, that is not electrified.
It would probably need to be electrified with 750 VDC third-rail electrification, as that standard is used between London Waterloo and Basingstoke.
In Solving The Electrification Conundrum, I described a system being developed by Hitachi, that would use battery-electric trains that were charged by short sections of electrified line every fifty miles or so. For reasons of ease of installation and overall costs, these short sections of electrification could be third-rail, that was electrically dead unless a train was connected and needed charging. These electrified sections could also be in stations, where entry on to the railway is a bit more restricted.
Conclusion
The Office of Rail and Road needs to employ a few more engineers with good technical brains, rather than ultra-conservative risk-averse lawyers.
As a sad footnote, I live in East London, where trespassers are regularly electrocuted on the railway. But usually, it is when idiots are travelling on top of container trains and inadvertently come into contact with the overhead electrification.
Using Hitachi ABB Power Grids Technology At Uckfield Station
This post describes how the ABB Power Grids technology could be used to allow battery-electric trains to run between London Bridge and Uckfield stations.
The London Bridge And Uckfield Route
The London Bridge And Uckfield route has these characteristics.
- It is forty-six miles long
- The Southern section between Heald Green junction and Uckfield station is 24.7 miles and is not electrified.
- A service takes approximately eighty minutes.
- Trains run at a frequency of one train per hour (tph)
- The route has been upgraded to be able to handle twelve car trains.
- The route is currently run by Class 171 diesel trains.
- Govia Thameslink Railway is the operator.
It looks to me if you assume a ten minute turnround, then that gives a three-hour round trip.
This would mean the following.
- Trains would have ten minutes charging time at Uckfield.
- If twelve car trains were running on the branch then nine four-car trains would be required for an hourly service.
- Two tph would require twice as many trains.
It looks to me, that Network Rail have arranged the route and the timetables for a fleet of battery-electric trains.
The Battery-Electric Trains
There have been several hints in the rail media, that battery-electric Bombardier Electrostars will be used for the London Bridge and Uckfield route.
I wrote Battery Electrostars And The Uckfield Branch in September 2019.
- In the related post I suggested Class 377, Class 379 or Class 387 trains.
- All are four-car Bombardier Electrostars.
- All are 100 or 110 mph trains.
- The Class 387 trains are already dual voltage, but I suspect all trains could be converted to third-rail or dual-voltage.
- My choice would be Class 379 trains, as they are being made redundant by Greater Anglia and thirty quality trains are looking for a new home.
But all three types would be acceptable and Govia Thameslink Railway has both of the other types in its extensive fleet.
Charging The Battery-Electric Trains
This picture shows the single twelve-car platform at Uckfield station.
There would appear to be plenty of space on the side away from the platform.
There would appear to be two main methods of charging the trains.
A Length Of 750 VDC Third-Rail Electrification On The Side Away From The Platform
- The electrification would be long enough to charge a twelve-car train.
- It could even be made very safe, if an interlock were to be provided, that ensured that the third-rail were only to be live, when a train was in the station that needed charging.
This would be possible, but I suspect the Anti-Third-Rail Electrification Mafia will get this simple method stopped.
A Length Of 25 KVAC Overhead Electrification Powered By One Of Hitachi ABB Power Grids Containised Power Systems
The electrification would be long enough to charge a twelve-car train.
The driver or an automated system would raise the pantographs after the train stopped in the station.
Interlocks could be provided to increase safety.
The overhead electrification would be powered by one or more of Hitachi ABB Power Grids’s containerised power systems
Lightweight catenary could be used to reduce visual intrusion.
The curved beam at the top of this overhead electrification gantry is laminated wood.
Because of the higher voltage used, I suspect that the Hitachi ABB Power Grids could charge a twelve-car train in under ten minutes.
Solving The Electrification Conundrum
The title of this post, is the same as an article in the July 2021 Edition of Modern Railways.
This is the introductory sub-heading.
Regional and rural railways poses a huge problem for the railway to decarbonise.
Lorna McDonald of Hitachi Rail and Jay Mehta of Hitachi ABB Power Grids tell Andy Roden why they believe they have the answer.
These are my thoughts on what is said.
Battery-Electric Trains
The article starts by giving a review of battery-electric trains and their use on routes of moderate but important length.
- Some short routes can be handled with just a charge on an electrified main line.
- Some will need a recharge at the termini.
- Other routes might need a recharge at some intermediate stations, with a possible increase in dwell times.
It was in February 2015, that I wrote Is The Battery Electric Multiple Unit (BEMU) A Big Innovation In Train Design?, after a ride in public service on Bombardier’s test battery-electric train based on a Class 379 train.
I also wrote this in the related post.
Returning from Harwich, I travelled with the train’s on-board test engineer, who was monitoring the train performance in battery mode on a laptop. He told me that acceleration in this mode was the same as a standard train, that the range was up to sixty miles and that only minimal instruction was needed to convert a driver familiar to the Class 379 to this battery variant.
It was an impressive demonstration, of how a full-size train could be run in normal service without connection to a power supply. I also suspect that the partners in the project must be very confident about the train and its technology to allow paying passengers to travel on their only test train.
A couple of years later, I met a lady on another train, who’d used the test train virtually every day during the trial and she and her fellow travellers felt that it was as good if not better than the normal service from a Class 360 train or a Class 321 train.
So why if the engineering, customer acceptance and reliability were proven six years ago, do we not have several battery electric trains in service?
- There is a proven need for battery-electric trains on the Marshlink Line and the Uckfield Branch in Sussex.
- The current Class 171 trains are needed elsewhere, so why are no plans in place for replacement trains?
- The government is pushing electric cars and buses, but why is there such little political support for battery-electric trains?
It’s almost as if, an important civil servant in the decision process has the naive belief that battery-electric trains won’t work and if they do, they will be phenomenally expensive. So the answer is an inevitable no!
Only in the South Wales Metro, are battery-electric trains considered to be part of the solution to create a more efficient and affordable electric railway.
But as I have constantly pointed out since February 2015 in this blog, battery-electric trains should be one of the innovations we use to build a better railway.
Hydrogen Powered Trains
The article says this about hydrogen powered trains.
Hybrid hydrogen fuel cells can potentially solve the range problem, but at the cost of the fuel eating up internal capacity that would ideally be used for passengers. (and as Industry and Technology Editor Roger Ford points out, at present hydrogen is a rather dirty fuel). By contrast, there is no loss of seating or capacity in a Hitachi battery train.
I suspect the article is referring to the Alstom train, which is based on the technology of the Alstom Coradia iLint.
I have ridden this train.
- It works reliably.
- It runs on a 100 km route.
- The route is partially electrified, but the train doesn’t have a pantograph.
- It has a very noisy mechanical transmission.
Having spoken to passengers at length, no-one seemed bothered by the Hindenburg possibilities.
It is certainly doing some things right, as nearly fifty trains have been ordered for train operating companies in Germany.
Alstom’s train for the UK is the Class 600 train, which will be converted from a four-car Class 321 train.
Note.
- Half of both driver cars is taken up by a hydrogen tank.
- Trains will be three-cars.
- Trains will be able to carry as many passengers as a two-car Class 156 train.
It is an inefficient design that can be improved upon.
Porterbrook and Birmingham University appear to have done that with their Class 799 train.
- It can use 25 KVAC overhead or 750 VDC third-rail electrification.
- The hydrogen tanks, fuel cell and other hydrogen gubbins are under the floor.
This picture from Network Rail shows how the train will appear at COP26 in Glasgow in November.
Now that’s what I call a train! Let alone a hydrogen train!
Without doubt, Porterbrook and their academic friends in Birmingham will be laying down a strong marker for hydrogen at COP26!
I know my hydrogen, as my first job on leaving Liverpool University with my Control Engineering degree in 1968 was for ICI at Runcorn, where I worked in a plant that electrolysed brine into hydrogen, sodium hydroxide and chlorine.
My life went full circle last week, when I rode this hydrogen powered bus in London.
The hydrogen is currently supplied from the same chemical works in Runcorn, where I worked. But plans have been made at Runcorn, to produce the hydrogen from renewable energy, which would make the hydrogen as green hydrogen of the highest standard. So sorry Roger, but totally carbon-free hydrogen is available.
The bus is a Wightbus Hydroliner FCEV and this page on the Wrightbus web site gives the specification. The specification also gives a series of cutaway drawings, which show how they fit 86 passengers, all the hydrogen gubbins and a driver into a standard size double-deck bus.
I believe that Alstom’s current proposal is not a viable design, but I wouldn’t say that about the Porterbrook/Birmingham University design.
Any Alternative To Full Electrification Must Meet Operator And Customer Expectations
This is a paragraph from the article.
It’s essential that an alternative traction solution offers the same levels of performance and frequency, while providing an increase in capacity and being economically viable.
In performance, I would include reliability. As the on-board engineer indicated on the Bombardier test train on the Harwich branch, overhead electrification is not totally reliable, when there are winds and/or criminals about.
Easy Wins
Hitachi’s five-car Class 800 trains and Class 802 trains each have three diesel engines and run the following short routes.
- Kings Cross and Middlesbrough- 21 miles not electrified – Changeover in Northallerton station
- Kings Cross and Lincoln – 16.6 miles not electrified – Changeover in Newark Northgate station
- Paddington and Bedwyn – 13.3 miles not electrified – Changeover in Newbury station
- Paddington and Oxford – 10.3 miles not electrified – Changeover in Didcot Parkway station
Some of these routes could surely be run with a train, where one diesel engine was replaced by a battery-pack.
As I’m someone, who was designing, building and testing plug-compatible transistorised electronics in the 1960s to replace older valve-based equipment in a heavy engineering factory, I suspect that creating a plug-compatible battery-pack that does what a diesel engine does in terms of power and performance is not impossible.
What would be the reaction to passengers, once they had been told, they had run all the way to or from London without using any diesel?
Hopefully, they’d come again and tell their friends, which is what a train operator wants and needs.
Solving The Electrification Conundrum
This section is from the article.
Where electrification isn’t likely to be a viable proposition, this presents a real conundrum to train operators and rolling stock leasing companies.
This is why Hitachi Rail and Hitachi ABB Power Grids are joining together to present a combined battery train and charging solution to solve this conundrum. In 2020, Hitachi and ABB’s Power Grids business, came together in a joint venture, and an early outcome of this is confidence that bringing together their expertise in rail, power and grid management, they can work together to make electrification simpler cheaper and quicker.
I agree strongly with the second paragraph, as several times, I’ve been the mathematician and simulation expert in a large multi-disciplinary engineering project, that went on to be very successful.
The Heart Of The Proposition
This is a paragraph from the article.
The proposition is conceptually simple. Rather than have extended dwell times at stations for battery-powered trains, why not have a short stretch of 25 KVAC overhead catenary (the exact length will depend on the types of train and the route) which can charge trains at linespeed on the move via a conventional pantograph?
The article also mentions ABB’s related expertise.
- Charging buses all over Europe.
- Creating the power grid for the Great Western Electrification to Cardiff.
I like the concept, but then it’s very similar to what I wrote in The Concept Of Electrification Islands in April 2020.
But as they are electrical power engineers and I’m not, they’d know how to create the system.
Collaboration With Hyperdrive Innovation
The article has nothing negative to say about the the collaboration with Hyperdrive Innovation to produce the battery-packs.
Route Modelling
Hitachi appear to have developed a sophisticated route modelling system, so that routes and charging positions can be planned.
I would be very surprised if they hadn’t developed such a system.
Modular And Scalable
This is a paragraph from the article.
In the heart of the system is a containerised modular solution containing everything needed to power a stretch of overhead catenary to charge trains. A three-car battery train might need one of these, but the great advantage is that it is scalable to capacity and speed requirements.
This all sounds very sensible and can surely cope with a variety of lines and traffic levels.
It also has the great advantage , that if a line is eventually electrified, the equipment can be moved on to another line.
Financing Trains And Chargers
The article talks about the flexibility of the system from an operator’s point of view with respect to finance.
I’ve had some good mentors in the area of finance and I know innovative finance contributed to the success of Metier Management Systems, the project management company I started with three others in 1977.
After selling Metier, I formed an innovative finance company, which would certainly have liked the proposition put forward in the article.
No Compromise, Little Risk
I would agree with this heading of the penultimate section of the article.
In February 2015, when I rode that Class 379 train between Manningtree and Harwich, no compromise had been made by Bombardier and it charged in the electrified bay platform at Manningtree.
But why was that train not put through an extensive route-proving exercise in the UK after the successful trial at Manningtree?
- Was it the financial state of Bombardier?
- Was it a lack of belief on the part of politicians, who were too preoccupied with Brexit?
- Was it that an unnamed civil servant didn’t like the concept and stopped the project?
Whatever the reason, we have wasted several years in getting electric trains accepted on UK railways.
If no compromise needs to be made to create a battery-electric train, that is equivalent to the best-in-class diesel or electric multiple units, then what about the risk?
The beauty of Hitachi’s battery-electric train project is that it can be done in phases designed to minimise risk.
Phase 1 – Initial Battery Testing
Obviously, there will be a lot of bench testing in a laboratory.
But I also believe that if the Class 803 trains are fitted with a similar battery from Hyperdrive Innovation, then this small fleet of five trains can be used to test a lot of the functionality of the batteries initially in a test environment and later in a real service environment.
The picture shows a Class 803 train under test through Oakleigh Park station.
This phase would be very low risk, especially where passengers are concerned.
Phase 2 – Battery Traction Testing And Route Proving
I am a devious bastard, when it comes to software development. The next set of features would always be available for me to test earlier, than anybody else knew.
I doubt that the engineers at Hyperdrive Innovation will be any different.
So I wouldn’t be surprised to find out that the batteries in the Class 803 trains can also be used for traction, if you have the right authority.
We might even see Class 803 trains turning up in some unusual places to test the traction abilities of the batteries.
As East Coast Trains, Great Western Railway and Hull Trains are all First Group companies, I can’t see any problems.
I’m also sure that Hitachi could convert some Class 800 or Class 802 trains and add these to the test fleet, if East Coast Trains need their Class 803 trains to start service.
This phase would be very low risk, especially where passengers are concerned.
Possibly, the worse thing, that could happen would be a battery failure, which would need the train to be rescued.
Phase 3 – Service Testing On Short Routes
As I indicated earlier, there are some easy routes between London and places like Bedwyn, Lincoln, Middlesbrough and Oxford, that should be possible with a Class 800 or Class 802 train fitted with the appropriate number of batteries.
Once the trains have shown, the required level of performance and reliability, I can see converted Class 800, 801 and Class 802 trains entering services on these and other routes.
Another low risk phase, although passengers are involved, but they are probably subject to the same risks, as on an unmodified train.
Various combinations of diesel generators and batteries could be used to find out, what is the optimum combination for the typical diagrams that train operators use.
Hitachi didn’t commit to any dates, but I can see battery-electric trains running on the Great Western Railway earlier than anybody thinks.
Phase 4 – Service Testing On Medium Routes With A Terminal Charger System
It is my view that the ideal test route for battery-electric trains with a terminal charger system would be the Hull Trains service between London Kings Cross and Hull and Beverley.
The route is effectively in three sections.
- London Kings Cross and Temple Hirst junction – 169.2 miles – Full Electrification
- Temple Hirst junction and Hull station – 36.1 miles – No Electrification
- Hull station and Beverley station – 8.3 miles – No Electrification
Two things would be needed to run zero-carbon electric trains on this route.
- Sufficient battery capacity in Hull Trains’s Class 802 trains to reliably handle the 36.1 miles between Temple Hirst junction and Hull station.
- A charging system in Hull station.
As Hull station also handles other Class 800 and Class 802 trains, there will probably be a need to put a charging system in more than one platform.
Note.
- Hull station has plenty of space.
- No other infrastructure work would be needed.
- There is a large bus interchange next door, so I suspect the power supply to Hull station is good.
Hull would be a very good first destination for a battery-electric InterCity train.
Others would include Bristol, Cheltenham, Chester, Scarborough, Sunderland and Swansea.
The risk would be very low, if the trains still had some diesel generator capacity.
Phase 5 – Service Testing On Long Routes With Multiple Charger Systems
Once the performance and reliability of the charger systems have been proven in single installations like perhaps Hull and Swansea stations, longer routes can be prepared for electric trains.
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%.
The press release talks about Penzance and London, so would that be a suitable route for discontinuous electrification using multiple chargers?
These are the distances between major points on the route between Penzance and London Paddington.
- Penzance and Truro – 35.8 miles
- Truro and Bodmin Parkway – 26.8 miles
- Bodmin Parkway and Plymouth – 26.9 miles
- Plymouth and Newton Abbot – 31,9 miles
- Newton Abbot and Exeter – 20.2 miles
- Exeter and Taunton – 30.8 miles
- Taunton and Westbury – 47.2 miles
- Westbury and Newbury – 42.5 miles
- Newbury and Paddington – 53 miles
Note.
- Only Newbury and Paddington is electrified.
- Trains generally stop at Plymouth, Newton Abbott, Exeter and Taunton.
- Services between Paddington and Exeter, Okehampton, Paignton, Penzance, Plymouth and Torquay wouldn’t use diesel.
- Okehampton would be served by a reverse at Exeter.
- As Paignton is just 8.1 miles from Newton Abbot, it probably wouldn’t need a charger.
- Bodmin is another possible destination, as Great Western Railway have helped to finance a new platform at Bodmin General station.
It would certainly be good marketing to run zero-carbon electric trains to Devon and Cornwall.
I would class this route as medium risk, but with a high reward for the operator.
In this brief analysis, it does look that Hitachi’s proposed system is of a lower risk.
A Few Questions
I do have a few questions.
Are The Class 803 Trains Fitted With Hyperdrive Innovation Batteries?
East Coast Trains‘s new Class 803 trains are undergoing testing between London Kings Cross and Edinburgh and they can be picked up on Real Time Trains.
Wikipedia says this about the traction system for the trains.
While sharing a bodyshell with the previous UK A-train variants, the Class 803 differs in that it has no diesel engines fitted. They will however be fitted with batteries to enable the train’s on-board services to be maintained, in case the primary electrical supplies have failed.
Will these emergency batteries be made by Hyperdrive Innovation?
My experience of similar systems in other industries, points me to the conclusion, that all Class 80x trains can be fitted with similar, if not identical batteries.
This would give the big advantage of allowing battery testing to be performed on Class 803 trains under test, up and down the East Coast Main Line.
Nothing finds faults in the design and manufacture of something used in transport, than to run it up and down in real conditions.
Failure of the catenary can be simulated to check out emergency modes.
Can A Class 801 Train Be Converted Into A Class 803 Train?
If I’d designed the trains, this conversion would be possible.
Currently, the electric Class 801 trains have a single diesel generator. This is said in the Wikipedia entry for the Class 800 train about the Class 801 train.
These provide emergency power for limited traction and auxiliaries if the power supply from the overhead line fails.
So it looks like the difference between the powertrain of a Class 801 train and a Class 803 train, is that the Class 801 train has a diesel generator and the Class 803 train has batteries. But the diesel generator and batteries, would appear to serve the same purpose.
Surely removing diesel from a Class 801 train would ease the maintenance of the train!
Will The System Work With Third-Rail Electrification?
There are three routes that if they were electrified would probably be electrified with 750 DC third-rail electrification, as they have this electrification at one or both ends.
- Basingstoke and Exeter
- Marshlink Line
- Uckfield branch
Note.
- Basingstoke and Exeter would need a couple of charging systems.
- The Marshlink line would need a charging system at Rye station.
- The Uckfield branch would need a charging system at Uckfield station.
I am fairly certain as an Electrical Engineer, that the third-rails would only need to be switched on, when a train is connected and needs a charge.
I also feel that on some scenic and other routes, 750 VDC third-rail electrification may be more acceptable , than 25 KVAC overhead electrification. For example, would the heritage lobby accept overhead wires through a World Heritage Site or on top of a Grade I Listed viaduct?
I do feel that the ability to use third-rail 750 VDC third-rail electrification strategically could be a useful tool in the system.
Will The System Work With Lightweight Catenary?
I like the design of this 25 KVAC overhead electrification, that uses lightweight gantries, which use laminated wood for the overhead structure.
There is also a video.
Electrification doesn’t have to be ugly and out-of-character with the surroundings.
Isuspect that both systems could work together.
Would Less Bridges Need To Be Rebuilt For Electrification?
This is always a contentious issue with electrification, as rebuilding bridges causes disruption to both rail and road.
I do wonder though by the use of careful design, that it might be possible to arrange that the sections of electrification and the contentious bridges were kept apart, with the bridges arranged to be in sections, where the trains ran on batteries.
I suspect that over the years as surveyors and engineers get more experienced, better techniques will evolve to satisfy all parties.
Get this right and it could reduce the cost of electrification on some lines, that will be difficult to electrify.
How Secure Are The Containerised Systems?
Consider.
- I was delayed in East Anglia two years ago, because someone stole the overhead wires at two in the morning.
- Apparently, overhead wire stealing is getting increasingly common in France and other parts of Europe.
I suspect the containerised systems will need to be more secure than those used for buses, which are not in isolated locations.
Will The Containerised Charging Systems Use Energy Storage?
Consider.
- I’ve lived in rural locations and the power grids are not as good as in urban areas.
- Increasingly, batteries of one sort or another are being installed in rural locations to beef up local power supplies.
- A new generation of small-footprint eco-friendly energy storage systems are being developed.
In some locations, it might be prudent for a containerised charging system to share a battery with the local area.
Will The Containerised Charging Systems Accept Electricity From Local Sources Like Solar Farms?
I ask the question, as I know at least one place on the UK network, where a line without electrification runs through a succession of solar farms.
I also know of an area, where a locally-owned co-operative is planning a solar farm, which they propose would be used to power the local main line.
Will The System Work With Class 385 Trains?
Hitachi’s Class 385 trains are closely related to the Class 80x trains, as they are all members of Hitachi’s A-Train family.
Will the Charging Systems Charge Other Manufacturers Trains?
CAF and Stadler are both proposing to introduce battery-electric trains in the UK.
I also suspect that the new breed of electric parcel trains will include a battery electric variant.
As these trains will be able to use 25 KVAC overhead electrification, I would expect, that they would be able to charge their batteries on the Hitachi ABB charging systems.
Will The System Work With Freight Trains?
I believe that freight services will split into two.
Heavy freight will probably use powerful hydrogen-electric locomotives.
In Freightliner Secures Government Funding For Dual-Fuel Project, which is based on a Freightliner press release, I detail Freightliner’s decarbonisation strategy, which indicates that in the future they will use hydrogen-powered locomotives.
But not all freight is long and extremely heavy and I believe that a battery-electric freight locomotive will emerge for lighter duties.
There is no reason it could not be designed to be compatible with Hitachi’s charging system.
In Is This The Shape Of Freight To Come?, I talked about the plans for 100 mph parcel services based on redundant electric multiple units. Eversholt Rail Group have said they want a Last-Mile capability for their version of these trains.
Perhaps they need a battery-electric capability, so they can deliver parcels and shop supplies to the remoter parts of these islands?
Where Could Hitachi’s System Be Deployed?
This is the final paragraph from the article.
Hitachi is not committing to any routes yet, but a glance at the railway map shows clear potential for the battery/OLE-technology to be deployed on relatively lightly used rural and regional routes where it will be hard to make a case for electrification. The Cambrian Coast and Central Wales Lines would appear to be worthy candidates, and in Scotland, the West Highland Line and Far North routes are also logical areas for the system to be deployed.
In England, while shorter branch lines could simply be operated by battery trains, longer routes need an alternative. Network Rail’s Traction Decarbonisation Network Strategy interim business case recommends hydrogen trains for branch lines in Norfolk, as well as Par to Newquay and Exeter to Barnstaple. However, it is also entirely feasible to use the system on routes likely to be electrified much later in the programme, such as the Great Western main line West of Exeter, Swansea to Fishguard and parts of the Cumbrian Coast Line.
Everyone is entitled to their own opinion and mine would be driven by high collateral benefits and practicality.
These are my thoughts.
Long Rural Lines
The Cambrian, Central Wales (Heart Of Wales), Far North and West Highland Lines may not be connected to each other, but they form a group of rail routes with a lot of shared characteristics.
- All are rural routes of between 100 and 200 miles.
- All are mainly single track.
- They carry occasional freight trains.
- They carry quite a few tourists, who are there to sample, view or explore the countryside.
- All trains are diesel.
- Scotrail have been experimenting with attaching Class 153 trains to the trains on the West Highland Line to act as lounge cars and cycle storage.
Perhaps we need a long-distance rural train with the following characteristics.
- Four or possibly five cars
- Battery-electric power
- Space for a dozen cycles
- A lounge car
- Space for a snack trolley
- Space to provide a parcels service to remote locations.
I should also say, that I’ve used trains on routes in countries like Germany, Poland and Slovenia, where a similar train requirement exists.
Norfolk Branch Lines
Consider.
- North of the Cambridge and Ipswich, the passenger services on the branch lines and the important commuter routes between Cambridge and Norwich and Ipswich are run by Stadler Class 755 trains, which are designed to be converted to battery-electric trains.
- Using Hitachi chargers at Beccles, Bury St. Edmunds, Lowestoft, Thetford and Yarmouth and the existing electrification, battery-electric Class 755 trains could provide a zero-carbon train service for Norfolk and Suffolk.
- With chargers at Dereham and March, two important new branch lines could be added and the Ipswich and Peterborough service could go hourly and zero carbon.
- Greater Anglia have plans to use the Class 755 trains to run a London and Lowestoft service.
- Could they be planning a London and Norwich service via Cambridge?
- Would battery-electric trains running services over Norfolk bring in more visitors by train?
Hitachi may sell a few chargers to Greater Anglia, but I feel they have enough battery-electric trains.
Par And Newquay
The Par and Newquay Line or the Atlantic Coast Line, has been put forward as a Beeching Reversal project, which I wrote about in Beeching Reversal – Transforming The Newquay Line.
In that related post, I said the line needed the following.
- An improved track layout.
- An hourly service.
- An improved Par station.
- A rebuilt Newquay station with a second platform, so that more through trains can be run.
I do wonder, if after the line were to be improved, that a new three-car battery-electric train shuttling between Par and Newquay stations could be the icing on the cake.
Exeter And Barnstaple
The Tarka Line between Exeter and Barnstaple is one of several local and main lines radiating from Exeter St. David’s station.
- The Avocet Line to Exmouth
- The Great Western Main Line to Taunton, Bristol and London
- The Great Western Main Line to Newton Abbott, Plymouth and Penzance
- The Riviera Line to Paignton
- The West of England Line to Salisbury, Basingstoke and London.
Note.
- The Dartmoor Line to Okehampton is under development.
- Several new stations are planned on the routes.
- I have already stated that Exeter could host a charging station between London and Penzance, but it could also be an electrified hub for battery-electric trains running hither and thither.
Exeter could be a city with a battery-electric metro.
Exeter And Penzance
Earlier, I said that I’d trial multiple chargers between Paddington and Penzance to prove the concept worked.
I said this.
I would class this route as medium risk, but with a high reward for the operator.
But it is also an enabling route, as it would enable the following battery-electric services.
- London and Bodmin
- London and Okehampton
- London and Paignton and Torquay
It would also enable the Exeter battery-electric metro.
For these reasons, this route should be electrified using Hitachi’s discontinuous electrification.
Swansea And Fishguard
I mentioned Swansea earlier, as a station, that could be fitted with a charging system, as this would allow battery-electric trains between Paddington and Swansea via Cardiff.
Just as with Exeter, there must be scope at Swansea to add a small number of charging systems to develop a battery-electric metro based on Swansea.
Cumbrian Coast Line
This is a line that needs improvement, mainly for the tourists and employment it could and probably will bring.
These are a few distances.
- West Coast Main Line (Carnforth) and Barrow-in-Furness – 28.1 miles
- Barrow-in-Furness and Sellafield – 25 miles
- Sellafield and Workington – 18 miles
- Workington and West Coast Main Line (Carlisle) – 33 miles
Note.
- The West Coast Main Line is fully-electrified.
- I suspect that Barrow-in-Furness, Sellafield and Workington have good enough electricity supplies to support charging systems for the Cumbrian Coast Line.
- The more scenic parts of the line would be left without wires.
It certainly is a line, where a good case for running battery-electric trains can be made.
Crewe And Holyhead
In High-Speed Low-Carbon Transport Between Great Britain And Ireland, I looked at zero-carbon travel between the Great Britain and Ireland.
One of the fastest routes would be a Class 805 train between Euston and Holyhead and then a fast catamaran to either Dublin or a suitable rail-connected port in the North.
- The Class 805 trains could be made battery-electric.
- The trains could run between Euston and Crewe at speeds of up to 140 mph under digital signalling.
- Charging systems would probably be needed at Chester, Llandudno Junction and Holyhead.
- The North Wales Coast Line looks to my untrained eyes, that it could support at least some 100 mph running.
I believe that a time of under three hours could be regularly achieved between London Euston and Holyhead.
Battery-electric trains on this route, would deliver the following benefits.
- A fast low-carbon route from Birmingham, London and Manchester to the island of Ireland. if coupled with the latest fast catamarans at Holyhead.
- Substantial reductions in journey times to and from Anglesey and the North-West corner of Wales.
- Chester could become a hub for battery-electric trains to and from Birmingham, Crewe, Liverpool, Manchester and Shrewsbury.
- Battery-electric trains could be used on the Conwy Valley Line.
- It might even be possible to connect the various railways, heritage railways and tourist attractions in the area with zero-carbon shuttle buses.
- Opening up of the disused railway across Anglesey.
The economics of this corner of Wales could be transformed.
My Priority Routes
To finish this section, I will list my preferred routes for this method of discontinuous electrification.
- Exeter and Penzance
- Swansea and Fishguard
- Crewe and Holyhead
Note.
- Some of the trains needed for these routes have been delivered or are on order.
- Local battery-electric services could be developed at Chester, Exeter and Swansea by building on the initial systems.
- The collateral benefits could be high for Anglesey, West Wales and Devon and Cornwall.
I suspect too, that very little construction work not concerned with the installation of the charging systems will be needed.
Conclusion
Hitachi have come up with a feasible way to electrify Great Britain’s railways.
I would love to see detailed costings for the following.
- Adding a battery pack to a Class 800 train.
- Installing five miles of electrification supported by a containerised charging system.
They could be on the right side for the Treasury.
But whatever the costs, it does appear that the Japanese have gone native, with their version of the Great British Compromise.
Is This The Shape Of Freight To Come?
This article on Rail Advent is entitled Eversholt Rail Unveils First Swift Express Freight Train In Doncaster.
It is a full report on the first of a new breed of freight trains based on redundant 100 mph electric multiple units.
Three Rail Problems
The rail industry, its financiers and customers have a lot of problems, they’d like to solve, but these three seem to be coming together to create a whole new industry.
Rolling Stock Leasing Companies Have A Surplus Of Redundant Rolling Stock
Most of the released rolling stock has been made redundant because of the arrival of new trains.
- Some trains and locomotives, like Greater Anglia’s Class 379 trains and Class 90 locomotives will probably be passed on to other operators.
- Some trains like Greater Anglia’s Class 315 trains and Govia Thameslink Railway‘s Class 313 trains and Merseyrail‘s Class 507 trains and Class 508 trains will probably only be fit for scrapping.
- Climate change ambitions will probably finish off anything which is elderly and diesel-powered.
What will be left will be a an assortment, which will contain a lot of trains with these characteristics.
- Four cars
- Can run in formations of 4, 8 and 12 cars
- Electrically-powered.
- Some trains are even dual voltage.
- 100 mph operating speed.
- Good reliability.
- Easy maintenance and modification if needed.
Many were even built over thirty years ago by British Rail Engineering Ltd.
As someone, who used to part-own a company that leased trucks to operators, I know that to maximise cash-flow and ultimately profits, you don’t want them sitting in a yard or a siding.
Conversion to zero carbon is one option.
- Porterbrook have said they will convert the Class 350 trains, that they own to battery-electric operation.
- Porterbrook have also converted some Class 319 trains to electro-diesel Class 769 trains.
- Porterbrook have also converted a Class 319 train to hydrogen operation.
- Eversholt Rail Group and Alstom are converting Class 321 trains to hydrogen operation.
I also believe that the redundant Class 379 trains will also be converted to battery-electric operation.
But there will still be a substantial number of quality trains, that need a second life.
The Growth Of Parcel Freight
Parcel freight traffic driven by on-line shopping, has boomed in the pandemic.
This type of traffic often originates from outside of the UK and enters the country at places like London Gateway or East Midlands Airport.
Much of it is currently distributed to large cities by truck, which in this day and age is not a green option, or even an option at all.
Rail Operations Group have leased ten Class 769 trains and 9 Class 319 trains with the intention of running parcel services under the Orion brand. I wrote about this proposal in A Freight Shuttle For Liverpool Street Station Planned.
Road Congestion
Road congestion is getting worse and there is bir much point in having product stuck on the motorway, when it can be running along at a 100 mph on an electrified rail line.
The Need For Just-In-Time Deliveries
Many factories these days work on the Just-In-Time principle, with product delivered just as its needed.
As an example Toyota build their cars at Burnaston near Derby, but the engines are built in North Wales. I suspect that they go across the country by truck.
Looking at maps, the engine plant could be rail connected and I feel one could be arranged at Burnaston.
Do they keep a good stock of engines at Burnaston?
I can see several situations like this needing a regular company train.
Fast Food
Because of Brexit we will need to be growing more of our own food.
Traditionally, the Class 43 power cars of InterCity 125 trains carried flowers and fish up from Cornwall.
So will we see rail provide an alternative.
Conclusion
Put these problems together and you can see a fair number of four-car electric multiple units being converted to short 100 mph electric freight trains.
Eversholt Rail Group‘s Swift Express Freight Train is very much a demonstrator for their ideas and it has some expected and unexpected features.
Based On A Class 321 train
The train is based on a four-car Class 321 train.
I rode one recently and I timed it at over 90 mph on the way to Southend.
Trolley Cages
Pictures in the Rail Advent article show a stripped-bare interior with a steel floor, with another picture showing three supermarket trolley cages arranged across the train.
One estimate in the article says that each coach can handle over fifty of these cages and up to nine-and-a-half tonnes of cargo.
Four Seats And A Toilet
Eversholt feel that some of the trains could be used in a Travelling Post Office mode and there may be a need for sorting en route, so two first-class seats, two second-class seats and a toilet are provided.
This train would enable an Anglo-Scottish parcel service.
- It might stop several times en route.
- At each stop parcels would be rolled out and in, perhaps with the help of a Harrington Hump.
- The on-train staff would sort the incoming parcels and put them in the required trolley for offloading.
I don’t think though, they’ll be delivering postal orders.
A Last Mile Capability
The article also disclosed that Eversholt were thinking of fitting a Last-Mile capability to the Swift Express Freight Train.
Batteries were mentioned and they would obviously work.
But one development recently is Porterbrook’s HydroFlex train, which has converted a Class 319 train to hydrogen power.
- The conversion was done by Birmingham University.
- It appears that all the hydrogen gubbins is underneath the floor, so cargo capacity would not be reduced.
I suspect underfloor hydrogen power could be very viable in an express freight train.
Fleet Size
The article talks of a fleet size of twenty and also says that the first train has been leased to an unnamed parcel distributor in the UK.
Wallingford Station: Historic Railway Canopy Finds New Home
The title of this post, is the same as that of this article on the BBC.
These are the first three paragraphs.
A historic canopy over a railway station platform that was in danger of being junked has found a new home.
The structure at Maidenhead in Berkshire had to be taken down because of electrification works needed for the Crossrail scheme.
It was painstakingly relocated to Wallingford Station in Oxfordshire and restored over seven years.
Judging by the comments in the article, it sounds like a job well done!
These paragraphs give the comments of TV historian; Tim Dunn.
TV historian Tim Dunn, who was present at the unveiling, called the canopy “one of a kind”.
“The fact that it’s been brought up bit by bit and rebuilt finally gives this railway a portal to the rest of the town,” he added.
“This is a brand new entrance to Wallingford.”
Does Tim Dunn imply anything more by the final statement?
Is There A Possibility Of The Restoration Of A Passenger Service Between Cholsey And Wallingford?
Consider these factors.
Great Western Railway Seem To Have a Policy Of Developing Their Branch Lines
In GWR To Test Battery Train On Branch Line, I said this.
The title of this post, is the same as that of this article on Rail Business UK.
This is the first paragraph.
Great Western Railway has invited expressions of interest in trialling a battery powered train on the 4 km non-electrified branch line from West Ealing to Greenford in west London.
The article says that Vivarail have made a previous proposal, but other companies are also likely to declare their interest.
Later in the related article, Mark Hopwood, who is Managing Director of Great Western Railway, indicated that they were looking for a modern zero-carbon solution for all of the branch lines, which they doubt would ever be electrified.
If GWR had a fleet of battery trains, then they could probably handle the two-and-a-half miles of the Cholsey and Wallingford Railway, provided the traffic was there, to make the service worthwhile.
Wallingford
Wallingford is a town of nearly twelve thousand inhabitants and many smaller towns and villages in England, have a regular rail service.
Cholsey Station
Cholsey station has two trains per hour (tph) between Paddington and Didcot Parkway stations, with extra services between Oxford and Reading stations in the Peaks.
This Google Map shows Cholsey station.
Note.
- Four through platforms for Great Western Railway services.
- Platforms 1 and 2 for the fast services are on the Western side.
- Platforms 3 and 4 for the slow services are on the Eastern side.
- Bay Platform 5 is tucked in the North-East corner of the station and is the terminus for services on the Cholsey And Wallingford Railway.
- There are only 55 parking spaces.
Is the number of parking spaces sufficient for the station, if a lot of passengers drive from Wallingford?
Could Battery-Electric Trains Handle The Service Between Cholsey And Wallingford?
As GWR has decided to look for battery-electric trains for their branch lines and this is only a five mile round trip, I think we can assume, that the battery-electric trains of the type, that Great Western Railway chooses, will be able to work this branch.
Intriguingly, the Greenford Branch Line is also 2.5 miles long and a round trip takes under thirty minutes, although the service is only hourly.
I feel that a well-driven single battery-electric train can provide two tph on the branch.
Charging would probably be needed at only one end of the branch line.
As all the through lines at Cholsey station are electrified with 25 KVAC overhead wires, I suspect that charging would be provided at that station.
Conclusion
I think it would be possible to provide a two tph service on the Cholsey and Wallingford branch line, using a battery-electric train.
GWR To Test Battery Train On Branch Line
The title of this post, is the same as that of this article on Rail Business UK.
This is the first paragraph.
Great Western Railway has invited expressions of interest in trialling a battery powered train on the 4 km non-electrified branch line from West Ealing to Greenford in west London.
The article says that Vivarail have made a previous proposal, but other companies are also likely to declare their interest.
I feel some unexpected proposals could turn up.
The reason would be commercial,.
This is the last paragraph of the article, which says this.
The challenge on Great Western is we’ve got branches like Greenford, Windsor, Marlow and Henley along the Thames valley, and then in the West Country we’ve got St Ives, Falmouth, Newquay, Looe, Gunnislake and so on’, said Hopwood. ‘If we don’t electrify those could we fit the trains with a battery?’ The ideal solution may be a train that fast charges either at one end of the route or possibly at both ends, or on a route like Marlow, Gunnislake or Looe, where the trains reverse during their journey, could the charge point even be on that part of the branch?’
Note.
- Mark Hopwood is now the Managing Director of GWR.
- Nine branches are mentioned, so with spare trains and maintenance, it could be a good-sized order.
But this project could be even bigger.
South Western Railway are a sister company of Great Western Railway and in August 2020, I wrote Special Train Offers A Strong Case For Reopening Fawley Line about the plans to open the Fawley Line.
This was a section, I wrote about trains that might work the line.
South Western Railway’s Innovative Train Plan
This is another quote from the article.
However, SWR’s Mark Hopwood favours a much bolder plan. “We’d have to take a decision, once we knew the line was going ahead. But my personal belief is that we should be looking for a modern environmentally-friendly train that can use third-rail electricity between Southampton and Totton and maybe operate on batteries down the branch line.”
Pressed on whether that would mean Vivarail-converted former-London Underground stock, Hopwood ads. “It could be. Or it could be a conversion of our own Class 456, which will be replaced by new rolling stock very shortly. But I don’t think this is the time to use old diesels.
This is the same Mark Hopwood, who is now Managing Director of GWR.
These pictures show the current status of one of the twenty-four Class 456 train.
In Converting Class 456 Trains Into Two-Car Battery Electric Trains I discuss this conversion in detail.
Conclusion
Twenty-four battery-electric Class 456 trains would probably go a long way to satisfy GWR’s needs.
Vivarail At COP26
This press release from Network Rail is entitled Network Rail And Porterbrook To Showcase Britain’s Green Trains Of The Future At COP26.
These two paragraphs are from the end of the first section of the press release.
It is envisaged that the HydroFLEX may also be used to transport visitors to see the Zero Emission Train, Scotland’s first hydrogen powered train.
Network Rail is also in the earlier stages of planning a similar event with Vivarail to bring an operational battery train to COP26.
Vivarail have taken battery trains to Scotland before for demonstration, as I wrote about in Battery Class 230 Train Demonstration At Bo’ness And Kinneil Railway.
Will other train companies be joining the party?
Alstom
It looks like Alstom’s hydrogen-powered Class 600 train will not be ready for COP26.
But I suspect that the French would not like to be upstaged by a rolling stock leasing company and a university on the one hand and a company with scrapyard-ready redundant London Underground trains on the other.
I think, they could still turn up with something different.
They could drag one of their Coradia iLint trains through the Channel Tunnel and even run it to Scotland under hydrogen power, to demonstrate the range of a hydrogen-powered train.
Alstom have recently acquired Bombardier’s train interests in the UK and there have been rumours of a fleet of battery-electric Electrostars, even since the demonstrator ran successfully in 2015. Will the prototype turn up at COP26?
Alstom’s UK train factory is in Widnes and I’ve worked with Liverpudlians and Merseysiders on urgent projects and I wouldn’t rule out the Class 600 train making an appearance.
CAF
Spanish train company; CAF, have impressed me with the speed, they have setup their factory in Newport and have delivered a total of well over a hundred Class 195 and Class 331 trains to Northern.
I wrote Northern’s Battery Plans, in February 2020, which talked about adding a fourth-car to three-car Class 331 trains, to create a battery-electric Class 331 train.
Will the Spanish bring their first battery-electric Class 331 train to Glasgow?
I think, they just might!
After all, is there a better place for a train manufacturer looking to sell zero-carbon trains around the world to announce, their latest product?
Hitachi
A lot of what I have said for Alstom and CAF, could be said for Hitachi.
Hitachi have announced plans for two battery-electric trains; a Regional Battery Train and an Intercity Tri-Mode Battery Train.
I doubt that either of these trains could be ready for COP26.
But last week, I saw the new Hitachi Class 803 train speeding through Oakleigh Park station.
This is not a battery-electric train, where battery power can be used for traction, but according to Wikipedia and other sources, it is certainly an electric train fitted with batteries to provide hotel power for the train, when the overhead electrification fails.
Are these Class 803 trains already fitted with their batteries? And if they are, have they been tested?
And who is building the batteries for the Class 803 trains?
The traction batteries for Hitachi’s two battery-electric trains are to be produced by Hyperdrive Innovation of Sunderland, which is not far from Hitachi’s train factory at Newton Aycliffe.
As an engineer, I would suspect that a well-respected company like Hyperdrive Innovation, can design a battery-pack that plugs in to Hitachi’s trains, as a diesel engine would. I would also suspect that a good design, would allow an appropriate size of battery for the application and route.
I feel it is very likely, that all batteries for Hitachi’s UK trains will be designed and build by Hyperdrive Innovation.
If that is the case and the Class 803 trains are fitted with batteries, then Hitachi can be testing the battery systems.
This document on the Hitachi Rail web site, which is entitled Development of Class 800/801 High-speed Rolling Stock for UK Intercity Express Programme, gives a very comprehensive description of the electrical and computer systems of the Hitachi trains.
As an engineer and a computer programmer, I believe that if Hyperdrive Innovation get their battery design right and after a full test program, that Hitachi could be able to run battery-electric trains based on the various Class 80x trains.
It could be a more difficult task to fit batteries to Scotland’s Class 385 trains, as they are not fitted with diesel engines in any application. Although, the fitting of diesel engines may be possible in the global specification for the train.
It is likely that these trains could form the basis of the Regional Battery Train, which is described in this infographic.
Note.
- The Class 385 and Regional Battery trains are both 100 mph trains.
- Class 385 and Class 80x trains are all members of Hitachi’s A-Train family.
- Regional Battery trains could handle a lot of unelectrified routes in Scotland.
I wouldn’t be surprised to see Hitachi bring a battery-equipped train to COP26, if the Class 803 trains have a successful introduction into service.
Siemens
Siemens have no orders to build new trains for the national rail network in the UK.
But there are plans by Porterbrook and possibly other rolling stock leasing companies and train operators to convert some redundant Siemens-built trains, like Class 350 trains, into battery-electric trains.
According to Wikipedia, Siemens upgraded East Midlands Railways, Class 360 trains to 110 mph operation, at their Kings Heath Depot in Northampton.
Could Siemens be updating one of the Class 350 trains, that are serviced at that depot, to a prototype battery-electric Class 350 train?
Stadler
Stadler have a proven design for diesel-electric, battery-electric and hydrogen trains, that they sell all over the world.
In the UK, the only ones in service are Greater Anglia’s Class 755 trains, which are diesel-electric bi-mode trains.
The picture shows one of these trains at Ipswich.
- They are 100 mph trains.
- Diesel, battery or hydrogen modules can be inserted in the short PowerPack car in the middle of the train.
- Diesel-battery-electric versions of these trains have been sold for operation in Wales.
- The interiors of these trains are designed for both short journeys and a two-hour run.
There is a possibility, that these trains will be upgraded with batteries. See Battery Power Lined Up For ‘755s’.
Conclusion
Times will be interesting in Glasgow at COP26!
What Would Be The Ultimate Range Of A Nine-Car Class 800 Train?
In Thoughts On Batteries On A Hitachi Intercity Tri-Mode Battery Train, I had a section, which was called The Ultimate Battery Train.
I said this.
I think it would be possible to put together a nine car battery-electric train with a long range.
- It would be based based on Hitachi Intercity Tri-Mode Battery Train technology, which would be applied to a Class 800 or Class 802 train.
- It would have two driver cars without batteries.
- It would have seven intermediate cars with 600 kWh batteries.
- It would have a total battery capacity of 4200 kWh.
- The train would be optimised for 100 mph running.
- My estimate in How Much Power Is Needed To Run A Train At 125 Or 100 mph?, said it would need 2.19 kWh per vehicle mile to cruise at 100 mph.
That would give a range of over 200 miles.
If the batteries were only 500 kWh, the range would be 178 miles.
Aberdeen, Inverness, Penzance and Swansea here we come.
Note that I have ignored energy lost in the station stops.
Energy Use And Recovery In A Station Stop
The station stop will be handled something like this.
The train will be happily trundling along at 100 mph.
At the right moment, the driver will apply the brakes and the train will stop in the station.
With trains like these Hitachi trains and many others, braking is performed by turning the traction motors into generators and the kinetic energy of the train will be turned into electricity.
Normally with this regenerative braking, the electricity is returned to the track, but these trains are not running on electrified track, so the electricity will be stored in the traction batteries on the train. This is often done in battery-electric road vehicles.
After the stop, the train will use battery power to accelerate back to 100 mph.
What kinetic energy will a Class 800 train have at 100 mph?
- The basic weight of a nine-car Class 800 train is 438 tonnes.
- I am assuming that the batteries are no heavier than the diesel engines they replace.
- The trains hold 611 passengers.
- I will assume each weighs 80 Kg with baggage, bikes and buggies, which gives a weight of 48.9 tonnes.
- This gives a total train weight of 486.9 tonnes.
Using Omni’s Kinetic Energy Calculator, gives a kinetic energy of 135.145 kWh.
When I first saw figures like this, I felt I had something wrong, but after checking time and time again, they still appear.
At each stop a proportion of the train’s kinetic energy will not be recovered.
These figures show the extra energy needed at each stop with different regenerative braking efficiencies.
- 100 % – 0 kWh
- 90 % – 13.51 kWh
- 80 % – 27.03 kWh
- 70 % – 40.54 kWh
- 60 % – 54.06 kWh
Obviously, the more efficient the regenerative braking, the less energy that needs to be added at each stop.
Edinburgh And Aberdeen
I am using Edinburgh and Aberdeen as an example.
Consider.
- I am assuming the train is cruising at 100 mph along the route.
- There are seven stations to the North of Haymarket station.
- If I assume 60 % regenerative braking efficiency, then each stop will need 54.06 kWh of electricity from the batteries.
- This gives a total of 378.4 kWh for the stops. Let’s call it 400 kWh.
- This effectively reduces the usable battery size to 3800 kWh
- Take off 200 kWh to make sure there’s always space for regenerative braking energy and useable battery size is 3600 kWh.
This can then be divided by the number of cars and 2.19 kWh per vehicle mile, to get the range.
This gives a range of over 180 miles.
With 500 kWh batteries the distance is just under 180 miles.
It certainly appears that a battery-electric train with seven 500-600 kWh batteries should be able to run between Edinburgh and Aberdeen.
Obviously, charging would be needed at Aberdeen.
What Would Be The Ultimate Range Of A Five-Car Class 800 Train?
What kinetic energy will a five-car Class 800 train have at 100 mph?
- The basic weight of a five-car Class 800 train is 243 tonnes.
- I am assuming that the batteries are no heavier than the diesel engines they replace.
- The trains hold 302 passengers.
- I will assume each weighs 80 Kg with baggage, bikes and buggies, which gives a weight of 25.6 tonnes.
- This gives a total train weight of 268.6 tonnes.
Using Omni’s Kinetic Energy Calculator, gives a kinetic energy of 74.6 kWh.
I will now use Edinburgh and Aberdeen as an example.
Consider.
- I am assuming the train is cruising at 100 mph along the route.
- I am assuming that the three intermediate cars have 600 kWh batteries.
- There are seven stations to the North of Haymarket station.
- If I assume 60 % regenerative braking efficiency, then each stop will need 29.84 kWh of electricity from the batteries.
- This gives a total of 208.9 kWh for the stops. Let’s call it 210 kWh.
- This effectively reduces the usable battery size to 1590 kWh
- Take off 100 kWh to make sure there’s always space for regenerative braking energy and useable battery size is 1490 kWh.
This can then be divided by the number of cars and 2.19 kWh per vehicle mile, to get the range.
This gives a range of over 136 miles.
With 500 kWh batteries the distance is around 110 miles.
It looks to me, that from these calculations that a nine-car train with battery packs in all the intermediate cars has a longer range than a five-car train with battery packs in all the intermediate cars.
What Would Be The Range Of a Five-Car Class 803 Train Equipped With Batteries?
What kinetic energy will a five-car Class 803 train have at 100 mph?
- The basic weight of a five-car Class 803 train is 228.5 tonnes.
- Three 600 kWh batteries could add 18 tonnes
- The trains hold 400 passengers.
- I will assume each weighs 80 Kg with baggage, bikes and buggies, which gives a weight of 32 tonnes.
- This gives a total train weight of 278.5 tonnes.
Using Omni’s Kinetic Energy Calculator, gives a kinetic energy of 77.3 kWh.
As before, I will now use Edinburgh and Aberdeen as an example.
Consider.
- I am assuming the train is cruising at 100 mph along the route.
- I am assuming that the three intermediate cars have 600 kWh batteries.
- There are seven stations to the North of Haymarket station.
- If I assume 60 % regenerative braking efficiency, then each stop will need 30.92 kWh of electricity from the batteries.
- This gives a total of 216.4 kWh for the stops. Let’s call it 220 kWh.
- This effectively reduces the usable battery size to 1580 kWh
- Take off 100 kWh to make sure there’s always space for regenerative braking energy and useable battery size is 1480 kWh.
This can then be divided by the number of cars and 2.19 kWh per vehicle mile, to get the range.
This gives a range of over 135 miles.
With 500 kWh batteries the distance is around 110 miles.
Thoughts On Batteries On A Hitachi Regional Battery Train
This article is a repeat of Thoughts On Batteries On A Hitachi Intercity Tri-Mode Battery Train, but for their other train with batteries; the Hitachi Regional Battery Train.
This Hitachi infographic describes a Hitachi Regional Battery Train.
Hitachi are creating the first of these battery trains, by replacing one of the diesel power-packs in a Class 802 train with a battery-pack from Hyperdrive Innovation of Sunderland.
The Class 802 train has the following characteristics.
- Five cars.
- Three diesel power-packs, each with a power output of 700 kW.
- 125 mph top speed on electricity.
- I believe all intermediate cars are wired for diesel power-packs, so can all intermediate cars have a battery?
In How Much Power Is Needed To Run A Train At 125 Or 100 mph?, I estimated that the trains need the following amounts of energy to keep them at a constant speed.
- Class 801 train – 125 mph 3.42 kWh per vehicle mile
- Class 801 train – 100 mph 2.19 kWh per vehicle mile
The figures are my best estimates.
We also know that according to Hitachi, the battery train has a range of 90 kilometres or 56 miles at a speed of 100 mph.
So applying the formula for energy needed gives that the battery size to cover 56 miles at a constant 100 mph will be.
56 * 2.19 * 5 = 613.2 kWh.
In the calculation for the Hitachi Intercity Tri-Mofr Battery Train, I had assumed that a 600 kWh battery was feasible, as it would lay less than the diesel engine it replaced.
I can also apply the formula for a four-car train.
56 * 2.19 * 4 = 490.6 kWh.
That too, would be very feasible.
Conclusion
I can’t wait to ride in one of Hitachi’s two proposed battery-electric trains.
Thoughts On Batteries On A Hitachi Intercity Tri-Mode Battery Train
This Hitachi infographic describes a Hitachi Intercity Tri-Mode Battery Train.
Hitachi are creating the first of these battery trains, by replacing one of the diesel power-packs in a Class 802 train with a battery-pack from Hyperdrive Innovation of Sunderland.
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%, gives a few more details.
The Class 802 train has the following characteristics.
- Five cars.
- Three diesel power-packs, each with a power output of 700 kW.
- 125 mph top speed on electricity.
- I believe all intermediate cars are wired for diesel power-packs, so can all intermediate cars have a battery?
In How Much Power Is Needed To Run A Train At 125 Or 100 mph?, I estimated that the trains need the following amounts of energy to keep them at a constant speed.
- Class 801 train – 125 mph 3.42 kWh per vehicle mile
- Class 801 train – 100 mph 2.19 kWh per vehicle mile
The figures are my best estimates.
The Wikipedia entry for the Class 800 train, also gives the weight of the diesel power-pack and all its related gubbins.
The axle load of the train is given as 15 tonnes, but for a car without a diesel engine it is given as 13 tonnes.
As there are four axles to a car, I can deduce that the diesel power-pack and the gubbins, weigh around eight tonnes.
How much power would a one tonne battery hold?
This page on the Clean Energy institute at the University of Washington is entitled Lithium-Ion Battery.
This is a sentence from the page.
Compared to the other high-quality rechargeable battery technologies (nickel-cadmium or nickel-metal-hydride), Li-ion batteries have a number of advantages. They have one of the highest energy densities of any battery technology today (100-265 Wh/kg or 250-670 Wh/L).
Using these figures, a one-tonne battery would be between 100 and 265 kWh in capacity, depending on the energy density.
As it is likely that if the diesel power-pack replacement would probably leave things like fuel tanks and radiators behind, so that the diesel engines could be reinstalled, I would expect that a battery of around four tonnes would be fitted.
On the basis of the University of Washington’s figures a 400 kWh battery pack would certainly be feasible.
Using. the energy use at 100 mph of 2.19 kWh per vehicle mile, I can get the following ranges for different battery sizes.
- 400 kWh battery – 36.53 miles
- 500 kWh battery – 45.67 miles
- 600 kWh battery – 54.80 miles
- 800 kWh battery – 73.06 miles
As Lincoln and Newark are just 16.6 miles apart, it looks to me that a 500 or 600 kWh battery could be a good choice for that route, as it would leave enough hotel power for the turnround.
It should also handle shorter routes like these.
- Newbury and Bedwyn – 13.3 miles.
- Didcot and Oxford – 10.3 miles
- Newark and Lincoln – 16.6 miles
- Leeds and Harrogate – 18.3 miles
- Northallerton and Middlesbrough – 20 miles
- Hull and Temple Hirst Junction and Hull – 36.1 miles
Some routes like Temple Hirst Junction and Hull would need charging at the destination.
The Range Of A Five Car Train With Three Batteries
Suppose a Hitachi Intercity Tri-Mode Battery Train had three battery-packs and no diesel engines.
- It would be based on Hitachi Intercity Tri-Mode Battery Train technology.
- It would have two driver cars without batteries.
- It would have three intermediate cars with 600 kWh batteries.
- It would have 1800 kWh in the batteries.
- The train would be optimised for 100 mph running.
- My estimate says it would need 2.19 kWh per vehicle mile to cruise at 100 mph.
It could have a range of up to 164 miles.
If the batteries were only 500 kWh, the range would be 137 miles.
The Ultimate Battery Train
I think it would be possible to put together a nine car battery-electric train with a long range.
- It would be based based on Hitachi Intercity Tri-Mode Battery Train technology, which would be applied to a Class 800 or Class 802 train.
- It would have two driver cars without batteries.
- It would have seven intermediate cars with 600 kWh batteries.
- It would have a total battery capacity of 4200 kWh.
- The train would be optimised for 100 mph running.
- My estimate in How Much Power Is Needed To Run A Train At 125 Or 100 mph?, said it would need 2.19 kWh per vehicle mile to cruise at 100 mph.
That would give a range of over 200 miles.
If the batteries were only 500 kWh, the range would be 178 miles.
Aberdeen, Inverness, Penzance and Swansea here we come.
Can Hitachi Increase The Range Further?
There are various ways that the range can be improved.
- More electrically-efficient on-board systems like air-conditioning.
- A more aerodynamic nose.
- Regenerative braking to the batteries.
- Batteries with a higher energy density.
- Better driver assistance software.
Note.
- Hitachi have already announced that the Class 810 trains for East Midlands Railway will have a new nose profile.
- Batteries are improving all the time.
I wouldn’t be surprised to see a ten percent improvement in range by 2030.
Conclusion
I was surprised at some of the results of my estimates.
But I do feel that Hitachi trains with 500-600 kWh batteries could bring a revolution to train travel in the UK.
Edinburgh And Aberdeen
Consider.
- The gap in the electrification is 130 miles between Edinburgh Haymarket and Aberdeen.
- There could be an intermediate charging station at Dundee.
- Charging would be needed at Aberdeen.
I think Hitachi could design a train for this route.
Edinburgh And Inverness
Consider.
- The gap in the electrification is 146 miles between Stirling and Inverness.
- This could be shortened by 33 miles, if there were electrification between Stirling and Perth.
- Charging would be needed at Inverness.
I think Hitachi could design a train for this route.

















