Iarnród Éireann Looks At Diesel Loco Replacement Options
The title of this post, is the same as that of this article on Railway Gazette.
These three paragraphs introduce the article.
The Stadler Class 99 electro-diesel locomotive for UK operator GB Railfreight was receiving close scrutiny from Iarnród Éireann at InnoTrans in Berlin, with the Irish national operator confirming to Railway Gazette International that it had discussed with the manufacturer how the type might be adapted for operation in Ireland.
Iarnród Éireann Chief Executive Jim Meade told Railway Gazette International ‘we will eventually need to replace our aging diesel fleet with dual-mode locomotives because our freight strategy will take us down that direction after we complete our electrification programme.
‘The replacement for the class 071s and 201s eventually will have to be a bi-mode electric with some form of HVO [renewable diesel fuel] traction in the long term; even the Class 201s are beyond mid-life already.
The Class 99 locomotive is a version of the Stadler Eurodual locomotive, which is described in this Stadler data sheet.
The Wikipedia entry for the Stadler Euro Dual is also informative and lists a dozen different versions of the locomotive, that have been sold to various countries and operators.
This paragraph summarises how the design can handle different gauges and electrical voltages.
The Euro Dual was designed from the onset as a highly modular platform, allowing it to be offered to customers in various different configurations, covering various gauges and voltage systems.
I doubt Stadler would have great difficulty producing an Irish gauge locomotive capable of running on whatever electrification, the Irish erect.
Will The Irish Class 99 Have Enough Power?
The power of the various diesel locomotives are as follows.
- Current Irish Class 071 – 1.68 MW
- Current Irish Class 201 – 2.4 MW
- UK Class 66 – 2.4 MW
- UK Class 99 – 1.79 MW
It would appear that the Class 99 is less powerful than the Irish Class 201 and the UK Class 66, but the Wikipedia entry for the Class 99 says this.
The chief executive of GBRf, John Smith, reports that the Class 99, despite having a less powerful diesel engine than the Class 66, will outperform the Class 66 at low speeds. The greater tractive effort means that the Class 99 on diesel power can deliver more power at the rail than the 66.
But as the Class 99 has 6.17 MW in electric mode, the solution must be to electrify the difficult sections.
I have just looked at the Felixstowe Branch Line, which will be very much Class 99 territory. I am fairly sure, that with some short lengths of electrification on the single-track sections, any performance problems with the Class 99 on the branch could be solved.
Could The Irish Class 99 Use Hydrogen As Secondary Power?
This OpenRailwayMap shows all the railways on the island of Ireland.
Note.
- All railways on the island of Ireland have an Irish gauge of 1.6 m.
- Only the DART in Dublin is electrified with 1,500 VDC overhead.
- There are 2,733 km. of track.
- New lines are still being added and old ones have been reopened in recent years.
- There will surely be pressure for the Irish to decarbonise their railways, both North and South of the Northern Irish border.
- There are no rail connections to another country, except for the link between Northern Ireland and the Republic of Ireland, which is between two similar systems.
- It is unlikely, that there will ever be a rail link between the Irish gauge railways on the island of Ireland and the standard gauge railways of Europe.
Effectively, the island of Ireland has an isolated network of tracks on which they could build a zero-carbon railway system.
- Signalling could be an off-the-shelf digital system.
- Zero-carbon traction power could be trains powered by either electricity and/or hydrogen.
- Both electricity and hydrogen would need substantial amounts of new rolling stock.
- Electricity would require electrification at €1,000,000 per single track kilometer, which could be around €5.5 billion for the electrification alone.
- Electrification would also need many bridges, stations and tunnels to be modified or rebuilt.
- Hydrogen would need a refuelling infrastructure and could go anywhere that diesel can.
- Hydrogen locomotives and trains, would be one-to-one replacements for diesel locomotives and trains.
It would appear that because of their geographic isolation, hydrogen could be an ideal zero-carbon fuel for the railways of Ireland.
In Do Cummins And Stadler Have a Cunning Plan?, I speculated that the electro-diesel Class 99 locomotive could be converted into an electro-hydrogen Class 99 locomotive, as Cummins are building diesel engines that can be converted into hydrogen ones.
Ireland with its unusual network could change to a zero-carbon railway in the following way.
- Purchase a fleet of diesel locomotives and trains that can run on Hydrotreated Vegetable Oil (HVO) and be convertible to hydrogen.
- A version of the Class 99 with or without the electrical gubbins would satisfy the locomotive replacement.
- A version of the tri-mode Stadler FLIRT like a Class 745 train, would satisfy the train replacement.
- All new trains and locomotives would replace the current stock and run on HVO.
- The hydrogen infrastructure would be built.
- The new trains and locomotives would be gradually converted to run on green hydrogen.
Within a few years, the island of Ireland would have a zero-carbon railway.
Advantages Of A Fully-Hydrogen Railway
These are a few advantages.
- One fuel for all trains.
- All trains and locomotives would be one manufacturer.
- No expensive electrification.
- Hydrogen trains and locomotives have a long range.
- No infrastructure modification for gauge clearance.
- Ireland has plenty of onshore and offshore wind for hydrogen.
- Standard fuelling systems are being developed.
- There would be no disruption as the trains changed to HVO and little disruption as they changed to hydrogen.
I believe that there would be a large increase in train usage both from locals and visitors, which can only be good for the Irish economy.
Managing The Project
This could be one of those rare projects that flows well.
- The changeover to hydrogen could involve very little rail infrastructure work.
- The hydrogen filling stations could be more-or-less independent of the rail infrastructure.
- Trains and locomotives could go into service, when they are accepted and the staff have been trained.
- Trains and locomotives would only be converted to hydrogen, as routes are made hydrogen-capable.
- There should be no gauging problems with the new trains and locomotives.
- There is only one train manufacturer.
Hopefully, it will all be delivered on time and on budget.
Centrica And European Energy Sign Agreement On Måde Green Hydrogen Facility
The title of this post, is the same as that of this press release from Centrica.
This is the sub-heading.
Centrica Energy and European Energy have signed a balancing and optimisation agreement for the Måde green hydrogen facility located at Port Esbjerg. Under the agreement, Centrica Energy will manage power production from co-located wind turbines, designating excess power production to green hydrogen production.
These two introductory paragraphs give more details.
Powering the 12MW green hydrogen facility are two wind turbines, part of the Måde Wind Turbine Test Center, developed by European Energy with a total installed capacity of 16MW. The turbines will provide renewable electricity, which is used to produce green hydrogen through electrolysis with demineralised water.
Expected to produce approximately 1,500 tonnes of green hydrogen every year, European Energy has secured an agreement with Port Esbjerg and a world-class industrial gases company for the offtake from the facility. As the production of hydrogen is a heat-intensive process, the excess heat from production will be fed into the local district heating network, demonstrating sector coupling across the electricity, fuel, and heating domains.
These are my thoughts,
Hydrogen Production
The hydrogen production uses a standard electrolysis method, but excess heat will be fed into the local district heating network.
AquaVentus And Denmark
I introduced AquaVentus in this post called AquaVentus.
This video shows the structure of AquaVentus.
I clipped this map from the video.
Note.
- The thick white line running North-West/South-East is the spine of AquaVentus, that delivers hydrogen to Germany.
- There is a link to Esbjerg in Denmark.
- There appears to be an undeveloped link to Norway.
- There appears to be an undeveloped link to Peterhead in Scotland.
- There appears to be a link to just North of the Humber in England.
- Just North of the Humber are the two massive gas storage sites of Aldbrough owned by SSE and Brough owned by Centrica.
- There appear to be small ships sailing up and down the East Coast of the UK. Are these small coastal tankers, that are distributing the hydrogen to where it is needed?
In the last century, the oil industry, built a substantial oil and gas network in the North Sea.
It appears now the Germans are leading the building of a substantial hydrogen network in the North Sea, that will bring the hydrogen they need to their country.
I also suspect that any spare hydrogen produced in Esbjerg can be added to the AquaVentus network.
- Hydrogen could be sent to Brough and Aldbrough in the UK for storage.
- Hydrogen could be sent to any country in the network that needs it.
Countries will pay for the hydrogen they use.
Optimising AquaVentus
AquaVentus is a complex network.
- Hydrogen could be produced offshore in British, Danish, Dutch, English, German, Norwegian, Orcadian, Scottish and Shetland waters.
- Hydrogen could be sent to Brough and Aldbrough in the UK for storage.
- Hydrogen can be sent to Belgium, Denmark, Germany, Norway, The Netherlands and the UK.
A company like Centrica has the expertise and the software to control the various hydrogen flows to the best advantage of hydrogen producers and users.
15+ MW Floating Wind Turbines to Be Tested At Norway’s METCentre
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Three companies have signed contracts with Norway’s Marine Energy Test Centre (METCentre) to test new technology aimed at reducing the costs of floating offshore wind by demonstrating floaters equipped with 15+ MW turbines.
These are the first two paragraphs.
According to Norwegian Offshore Wind, this is the turbine size that will be relevant for future floating offshore wind farms.
The test area is located just a few kilometres away from the Utsira Nord zone, where Norway’s first commercial floating offshore wind farm will be located.
This sounds like the sort of sensible test philosophy, that you’d expect from the Norwegians.
Norway Plans EUR 3 Billion Subsidy For Floating Offshore Wind
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
The Norwegian government has proposed NOK 35 billion (approximately EUR 3 billion) for a support scheme dedicated towards the first commercial floating offshore wind tender within the Vestavind F and Vestavind B areas.
These are the first two paragraphs.
According to the press release, the government is making progress in following up on its ambitious plan to allocate project areas for 30 GW of offshore wind by 2040.
Norway plans to conduct the next tendering round for offshore wind in 2025. After that, the government intends to hold regularly scheduled tendering rounds and state aid competitions leading up to 2040.
The original press release is called A Responsible Approach To Floating Offshore Wind.
Some politicians and green sceptics might not call three billion euros responsible.
I do suspect that Great British Energy will have to deal in this size of numbers to be able to compete with the Norwegians.
We’ll have to work hard to meet our target of 100 GW by 2040.
But at least as the UK’s target is higher, does that mean that the target should be easier. Or do we have more suitable sea?
Principle Power Unveils New Floating Wind Foundations For 15 MW+ Turbines
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Principle Power has expanded its WindFloat portfolio by introducing two new semisubmersible floating wind foundation designs, called WindFloat TC and WindFloat FC, which are said to be optimised for 15 MW+ wind turbines.
A large picture and these two paragraphs introduce the new designs.
According to the company, the new designs are natural evolutions of the existing WindFloat technologies that support a wind turbine located on a column in the centre of the platform.
Designed to complement the existing perimeter column designs WindFloat T and WindFloat F, the new solutions share the same 4th generation design heritage and benefits.
Smart Hull Trim System
The article also mentions a Smart Hull Trim System in this sentence.
Some of these include a Smart Hull Trim system to maximise annual energy production and reduce loads.
I would assume that the Smart Hull Trim System, works very much like the control surfaces of an aeroplane or submarine to keep the craft straight and level.
On the Principle Power web site, the various WindFloats are described as follows.
- WindFloat T – Proven WindFloat® design, suitable for tubular construction.
- WindFloat F – A pontoon-based design suitable for flat panel construction.
- WindFloat TC & FC – Center column design solutions, optimized for 15MW+ turbines with stiff-stiff towers.
From work, I did in the 1970s, with two Cambridge University engineering professors, I reckon that the TC and FC designs will be the best.
Conclusion
Whatever way you look at it, a 15 MW+ floating wind turbine, when you consider they can have capacity factors in excess of 50 %, could be a very powerful electricity generator.
Ireland Joins Forces With EIB For Offshore Wind Port Upgrades
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
The European Investment Bank (EIB) and the Irish Department of Transport have established an advisory cooperation to assess capacity, demand and financing strategies for the development of port infrastructure for offshore wind projects in Irish waters.
These are the first two paragraphs.
Signed by the Irish Minister for the Environment, Climate, Communications and Transport, Eamon Ryan, and EIB Vice President Ioannis, the advisory cooperation aims to evaluate the scale and nature of investment needed to upgrade Irish ports.
The initiative is said to unlock an estimated EUR 30 billion in investment in offshore wind projects in the country which plans to have 20 GW of capacity installed by 2040 and 37 GW by 2050.
It looks to me, that the Republic of Ireland will become a big player in the production of electricity from offshore wind.
I also suspect that Northern Ireland will play its part too!
SSE Announces Construction Of Aberarder Wind Farm
The title of this post, is the same as that as an advert on my online edition of The Times.
Click the advert and you get this page, with the title of this post.
This is the sub-heading.
Aberarder secured 15-year CfD in UK Allocation Round 5
These three paragraphs give more details of the wind farm.
SSE has taken a final investment decision to proceed with Aberarder Wind Farm in the Scottish Highlands, in a circa £100m investment boost for its onshore wind portfolio.
Construction of the 12 turbine, 50MW wind farm, which is wholly owned by SSE Renewables, will begin before the end of the year with completion scheduled for the end of 2026. The Aberarder project was successful in September 2023 in the UK’s fifth Contract for Difference (CfD) Allocation round, securing a 15-year contract for low-carbon power generation.
Located at Strathnairn near Inverness, on a natural plateau at an average of 700m above sea level, the Aberarder project site sits directly adjacent to the operational 94MW Dunmaglass Wind Farm, which is jointly owned by SSE Renewables and Greencoat UK Wind.
It would appear that a £100m investment in the Scottish Highlands will get you a fully-operational 50 MW wind farm.
These are my observations and thoughts.
SSE’s Project Overview Of Aberarder Wind Farm
These four paragraphs are SSE’s project overview from this page on the SSE Renewables web site.
The Aberarder Wind Farm project is located in Strathnairn near Inverness, on a natural plateau at an average of 700m above sea level. It will sit directly adjacent to the operational 94MW Dunmaglass Wind Farm, which is jointly owned by SSE Renewables and Greencoat UK Wind.
The project was developed by RES and consented by The Highland Council in April 2017. The consent allows for the construction of a 12-turbine onshore wind farm, with each turbine having a maximum tip height of up to 130m and is expected to have an export capacity of 49.9MW. SSE Renewables reached an agreement with RES to acquire Aberarder in October 2022.
In September 2023 Aberarder was successful in the UK’s fifth Contract for Difference (CfD) Allocation Round and was awarded a 15-year contract for low carbon power generation. SSE took a final investment decision to proceed with Aberarder Wind Farm, in a circa £100m investment in May 2024, construction is scheduled to begin before the end of 2024 with completion scheduled for the end of 2026.
Our focus is now on building strong and meaningful relationships with the local community surrounding the Aberarder Wind Farm. As a responsible developer and operator, we are looking forward to working closely with the community in surrounding area to fully realise the benefits of this exciting project.
Construction has now started and it would appear that in two years, the twelve-turbine wind farm will be producing power.
SSE’s Description Of Dunmaglass Wind Farm
These four paragraphs are SSE’s description from this page on the SSE Renewables web site.
Located to the south east of Inverness, on a natural plateau at an average of 700m above sea level, Dunmaglass is SSE’s highest wind farm to be constructed.
SSE acquired the project from RES in May 2013 and initial enabling works began in the summer of 2013 which included the upgrading of 11km of tracks and the construction of two timber deck bridges.
Highland contractor RJ McLeod was awarded the £16m main civil works contract in summer 2014.
Dunmaglass became fully operational in 2017.
This paragraph also illustrates the challeges of the It looks like the construction of the larger Dunmaglass wind farm.
The height at which Dunmaglass is located presented its challenges during construction and the winter months brought high winds and plenty of snow. The site was fully completed and handed to the operations team in 2017.
Surprisingly, the legendary Highland midges didn’t get a mention.
The Sale Of 49.9 % Of Dunmaglass Wind Farm To Greencoat UK Wind
This sub-heading outlines the sale.
In February 2019, SSE sold 49.9% of Dunmaglass to Greencoat UK Wind PLC as part of a deal in which Greencoat acquired a 49.9% stake in both Dunmaglass and the nearby Stronelairg wind farm.
This paragraph gives more details of the sale.
In February 2019, SSE signed agreements for the sale of 49.9% of Dunmaglass wind farm to Greencoat UK Wind Plc (“UKW”). This sale was part of a £635m deal in which Greencoat acquired a 49.9% stake in both Stronelairg and Dunmaglass wind farms. The stakes equate to 160.6MW (megawatts) of capacity, with an average valuation for the two wind farms of around £4m per MW. This valuation demonstrates SSE’s ability develop quality, low carbon assets and infrastructure vital to the GB energy market.
The interesting figure is that SSE was paid £4m per MW for the interest of 160.6 MW, that they sold.
Aberarder wind farm is a 50 MW wind farm and it appears that it will cost £100 million to build.
If after a couple of years of operation, the wind farm is worth £4 million per MW, then SSE have doubled their money.
Does this illustrate, why the professionals like SSE and Greencoat UK Wind invest in wind farms?
- SSE would have taken the risk, that they could build the wind farm.
- SSE have the engineering skillsto do an excellent job.
- Greencoat UK Wind are buying into a producing asset, with a known cash flow.
SSE also get more money to build more wind farms.
Where Are Aberarder And Dunmaglass?
This Google Map shows the site of Aberarder wind farm with respect to Inverness.
Note.
- Inverness is at the top of the map on the waters of the Solway Firth.
- Aberarder wind farm is marked by the red arrow.
- Aberarder is a hamlet to the North-West of the wind farm.
- Drumnaglass is a shooting estate to the North-West of the wind farm.
- Loch Duntelchaig is the main reservoir for Inverness.
This second Google Map shows the Drumnaglass wind farm.
Note.
- Drumnaglass wind farm has 33 turbines and a capacity of 94.05 MW.
- There is a track network of 11 km. linking all the turbines.
- A good proportion of the turbines can be picked out on the map.
It would appear that Aberarder wind farm will lie to the South-East of this wind farm.
Aberarder Wind Farm To Fort Augustus
In Cloiche Onshore Wind Farm, I talked about the 130.5 MW Cloiche wind farm and its future construction to the East of Fort Augustus and Stronelairg wind farm.
This Google Map shows the position of Aberarder wind farm with respect to Ford Augustus.
Note.
- Loch Ness runs across the North-West corner of the map.
- Fort Augustus and Stronelairg wind farm, are at the Southern end of the loch.
- The red arrow shows Aberarder wind farm.
- Foyers pumped hydro is on the Eastern bank of Loch Ness, at about the same latitude as the Aberarder wind farm.
- The lake at the bottom of the map, to the South-East of Ford Augustus, is the Glendoe Reservoir, that powers the Glendoe hydroelectric scheme.
There are certainly, a lot of SSE-owned and/or SSE-controlled assets in the area and I wouldn’t be surprised, if SSE integrated them more closely, or added a few more wind farms.
Why Are SSE Advertising The Start Of Construction?
SSE have been advertising for some time on The Times web site.
As they are not a retail energy company anymore, as they sold their retail business to OVO, the advertising, is probably about spreading a good corporate message and getting their strategy broadcast.





















































































