I took this pictures, as I rode up the Rhymney Valley from Cardiff to Caerphilly.
Note.
- The trains I took up and down the valley were both Class 756 tri-mode trains.
- My train reversed to Penarth in Platform 1.
- I think they were running using the diesel power in the power pack.
- There is an overhead conductor rail in Platform 1 at Caerphilly station to charge trains.
- The electrification North of Caerphilly station can be seen through the bridge in one of the pictures.
- Platforms 2 and 3 are not electrified.
I think Caerphilly station is a very neat electrification layout for occasional charging of battery-electric or tri-mode trains.
I have some specific thoughts.
What Have Caerphilly And St. Pancras Thameslink Stations Got In Common?
These pictures show the rigid conductor rail through St. Pancras Thameslink station.
It looks remarkably similar to that in Platform 1 at Caerphilly station.
Judge in this picture.
The rails are probably out of the same Swiss electrification maker’s parts bin.
Both look equally professional with an I-section conductor, which could be aluminium, as it is lightweight and a good electrical conductor.
Google AI finds this.
The I-beam overhead conductor system used in St. Pancras Thameslink station is made of a hollow extruded aluminium profile. This system, known as a conductor beam, holds a conventional copper contact wire, providing a rigid, low-profile alternative to traditional overhead wires.
Key details:
Material: Extruded aluminium profile.
Structure: Hollow, designed to hold an un-tensioned, conventional copper contact wire.
Application: Developed by Balfour Beatty to reduce the required depth of overhead line equipment.
Installation: Often installed in a sinusoidal wave to ensure consistent wear on the pantograph.
This technology is used in areas with restricted overhead space, such as tunnels and some modern station approaches, to manage 25kV AC electrification.
It looks like it’s been used to provide a charging rail in Caerphilly station.
Is The Conductor Rail In Platform 1 Used To Create A Continuous Electrical Connection Around Caerphilly Station?
Look at this OpenRailwayMap, which shows the completed electrification through Caerphilly station.
Note.
- Red tracks are electrified.
- Black tracks are not electrified.
- Caerphilly station is indicated by the blue arrow.
- The electrification continues to the Western end of the station.
- The two main platforms 2 & 3 are not electrified.
- The bay platform 1 is electrified to charge trains for return to Cardiff.
- Class 756 tri-mode electric-diesel-battery trains are already in service.
- There appears to be a comprehensive bus interchange.
The power for Platform 1 could come from the electrification at the Western end of the station.
I wouldn’t be surprised that the Rhymney Line will be fed with electricity at the heads of the valleys and it is fully-connected down to Cardiff to give a secure electrical connection.
Will Welsh Wind Power From The Heads Of The Valleys Be Used To Power The Cardiff Valley Lines?
To start with, as I know it can be blowy there, I asked Google AI, this question.
“Is Onshore Wind Planned At The Heads Of The Valleys In South Wales?”
I received this answer.
Yes, there is significant onshore wind energy development planned and in progress along the Heads of the Valleys area in South Wales. This region, encompassing areas like Merthyr Tydfil, Blaenau Gwent, and northern Rhondda Cynon Taf, is part of a broader push to increase onshore wind capacity in Wales, with many projects located on Natural Resources Wales forestry land.
Key Developments and Proposed Projects (2025-2026):
Trydan Gwyrdd Cymru: The Welsh government-owned developer has selected sites in South Wales for new, large-scale wind farms intended to be operational by 2040.
Carreg Wen Wind Farm: A planned 18-turbine project located between Aberdare and Maerdy (Rhondda Cynon Taf), near the Hirwaun/Heads of the Valleys area.
Hirfynydd Renewable Energy Park: A proposed project located on the Hirfynydd mountain range between Seven Sisters and Banwen, north of Neath, near the western end of the Heads of the Valleys.
Mynydd Llanhilleth and Trecelyn Wind Farms: Projects in the pre-application or planning stages by Pennant Walters in the Blaenau Gwent area.
Abergorki Wind Farm: A consented three-turbine project on Mynydd Maerdy (Rhondda Cynon Taf) with construction scheduled for 2026.
Operational Context:
Pen y Cymoedd: Already operational and currently the largest onshore wind farm in England and Wales, situated in the hills above the upper Neath, Afan, Rhondda, and Cynon Valleys.
Grid Infrastructure: Proposed new substations, such as one near Hirwaun (Rhondda Cynon Taf), are intended to connect these new projects to the national grid.
These developments are part of a target to generate 70% of Wales’ electricity from renewable sources by 2030, with a focus on areas previously identified as suitable for large-scale wind development.
Note.
- Pen y Cymoedd is the largest onshore wind farm in Wales and England, with an installed capacity of 228 MW.
- With the right size of battery, I’m fairly sure, that this wind farm could go a long way to powering the Cardiff Valley Lines.
- Carreg Wen Wind Farm is planned to be 108 MW wind farm.
- Hirfynydd Renewable Energy Park is planned to be a 100 MW hybrid development of wind turbines and solar with a battery.
- Mynydd Llanhilleth is planned to be a 48 MW wind farm.
- Trecelyn is planned to be a 20 MW wind farm.
- Abergorki is planned to be a 13 MW wind farm.
The total of new developments is 389 MW, which is about the same size as a Rolls-Royce SMR.
March 25, 2026
Posted by AnonW |
Artificial Intelligence, Energy, Transport/Travel | Caerphilly Station, Cardiff Central Station, Cardiff Valley Lines, Class 756 Train, Electrification, Google AI, Heads Of The Valleys, Onshore Wind Power, Rhymney Line, Rigid Overhead Conductor Rail, Rolls-Royce SMR, Soiuth Wales, South Wales Metro, St. Pancras Station, Thameslink, Wind Power |
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The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Clarksons Port Services has signed an agreement with RWE and Associated British Ports (ABP) for RWE’s Vanguard West and Vanguard East offshore wind projects in the UK.
These three paragraphs add more detail to the story.
Under the agreement, the company will support the construction of the two offshore wind farms from the Lowestoft Eastern Energy Facility (LEEF), where Clarksons will lease and operate a facility on behalf of RWE.
ABP officially opened the new port facility in January 2025, after investing GBP 35 million (around EUR 40 million) in the port infrastructure. The facility features deep-water berths, modern utilities and future-proofed infrastructure to support shore power and alternative fuels, according to the port operator.
RWE secured Contracts for Difference (CfDs) for the two offshore wind farms in January this year, when the UK government awarded 8.4 GW of offshore wind capacity in the seventh CfD round (AR7).
Vanguard West and Vanguard East offshore wind projects are almost identical 1545 MW projects, that should be commissioned in 2028/29.
The two projects are 47 km. off the coast of Norfolk.
They will bring their power ashore at Happisburgh and connect underground to the grid at a new substation at Necton.
If I was a Norfolk Nimby, I would feel, that RWE are building these wind farms so as not to annoy the neighbours.
- They are a fair way out to sea.
- There appear to be no overhead cables.
- The support will be handled in a purpose-built facility.
Judding by their actions, I do wonder if RWE are getting a shift on, as they would like to get these wind farms built before the 2029 General Election
March 23, 2026
Posted by AnonW |
Energy | ABP, Clarksons Port Services, Happisburgh, Lowestoft, Norfolk Vanguard East Wind Farm, Norfolk Vanguard West Wind Farm, Offshore Wind Leasing Round 7, Offshore Wind Power, Port Of Lowestoft, RWE, Wind Power |
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The title of this post, is the same as that of this article on the BBC Future Web Site.
It is also one of the best articles, I’ve read on the economics of liquid-air energy storage.
This is the sub-heading.
An overlooked technology for nearly 50 years, the world’s largest liquid air energy storage facility is finally set to power up in 2026. It’s hoping to compete with grid-scale lithium batteries and hydro to store clean power, and reduce the need to fall back on fossil fuels.
These three introductory paragraphs add detail to the project.
As the world’s use of renewable electricity soars, surpassing coal for the first time, the need to store that energy when the Sun isn’t shining and the wind isn’t blowing is growing in step. While some turn to grid-scale lithium batteries and others to pumped hydro, a small but growing industry is convinced there’s a better solution still: batteries that rely on air.
Near the village of Carrington in north-west England, the foundations are being laid for the world’s largest commercial-scale liquid air energy storage facility, one of the first of its kind. The site will eventually become an array of industrial machinery and a number of large storage tanks, filled with air that has been compressed and cooled so much it has become a liquid, using renewable energy surplus to demand. The stored energy can be discharged later when demand exceeds supply.
If the project succeeds, more will follow. The site’s developers Highview Power are confident that liquid air energy storage will make it easier for countries to replace fossil fuels with clean renewable energy – though at present, the technology is expensive. But as the need for clean energy storage surges, they’re betting the balance will tip in favour of liquid air.
The BBC article, seems to have been written with input from Shaylin Cetegen, a chemical engineer at the Massachusetts Institute of Technology (MIT), who studies energy storage systems.
Topics discussed include.
- The intermittency problem of renewables and how this gives problems for the stability of electricity grids.
- The switchable nature of fossil-fuel power generation.
- A big part of the solution is to store the surplus energy so that it can be released when it’s needed. Think of it like an electricity deposit account!
- For decades, the main form of energy storage has been pumped hydro. In 2021, the world had 160 GW of pumped hydro capacity. The UK has a total of just 3 GW in Scotland and Wales! But more is on the way!
- Recently, large-scale battery storage systems have risen to the challenge and installed capacity has risen from 55.7 GW in 2023 to 150 GW / 348 GWh in 2025.
- The liquid air solution is then explained.
- A grid-scale stop-gap, that is the 30 MW/300 MWh Manchester hybrid liquid-air battery, is then described.
- In August 2026, the battery is set to begin operating.
- An alternative way of stabilising the grid will be provided.
- It will come online in two stages, says Highview Power CEO Richard Butland.
- Then in 2027 the liquid air storage is expected to begin fully operating.
Highview Power will make money by trading electricity, as pumped storage operators do.
The penultimate section of the article looks at the bottom line and comes to these conclusions.
Instead, she says governments could support the technology. In her study, subsidising the initial capital costs to set up the systems “could be a viable approach to achieve economic viability in the short term”, she says.
Furthermore, faster uptake of renewables would increase energy price volatility, making energy storage more economically viable.
Cetegen makes a final point in favour of liquid air energy storage: it’s cheap. Energy storage technologies are often assessed using a metric called the “levelised cost of storage”, which estimates how much each unit of stored energy costs over the lifespan of the project. For liquid air, this can be as low as $45 (£34) per megawatt-hour – compared to $120 (£89) for pumped hydro and $175 (£130) for lithium-ion batteries.
“While none of these storage methods are likely economically viable right now without policy support, liquid air energy storage stands out as a particularly cost-effective option for large-scale storage,” Cotegen says.
Ultimately, Butland expects electricity grids to rely on a mix of storage technologies. Pumped hydro is extremely effective and works for decades, but it’s location-dependent because it needs a water supply. Meanwhile, batteries are highly efficient and can be placed anywhere, but need to be replaced after about 10 years. Liquid air has the advantage that it can store energy for longer than batteries, with minimal losses.
As any country enters the green transition, its electricity grid needs to be remodelled to cope. “We’re rebuilding all grids globally, based on new generation,” says Butland. And that could well mean a lot of liquid air energy storage.
March 21, 2026
Posted by AnonW |
Energy Storage, Energy | Battery Energy Storage Systems (BESS), Carrington LDES, Coal, Grid Battery, Highview Power, Hunterston LAES, Lithium-Ion Battery, Pumped Storage Hydroelectricity, Renewable Energy, Scotland, Solar Power, Wind Power |
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The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Stillstrom, part of A.P. Moller – Maersk and based in Denmark, has established a dedicated entity in Aberdeen, Scotland, with plans to roll out its offshore vessel charging solution commercially in the UK.
These three paragraphs add more details.
The solution is transitioning from development to commercial deployment, and, according to a press release issued by Stillstrom on 16 March, the company is targeting one of the world’s most active offshore wind markets for the commercial rollout.
Stillstrom has been developing offshore charging solutions for service operations vessels (SOVs) since 2019, with testing and collaboration carried out with shipowners and developers in Aberdeen. SOVs are amongst the most energy-intensive ships operating at offshore wind farms, according to Stillstrom.
The company says that this has now translated into tangible momentum, with significant discussions underway with major wind farms, as well as partnership and compatibility agreements signed with leading SOV owners and operators.
March 19, 2026
Posted by AnonW |
Energy, Transport/Travel | A.P. Moller – Maersk, Aberdeen, Charging Battery Ships, Offshore Wind Power, Wind Power |
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The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
The Welsh government has invested GBP 8 million (approximately EUR 9.4 million) in Marine Power Systems (MPS) to support the commercialisation of its floating offshore wind technology.
These three paragraphs add more detail to the story.
According to the company, the funding will accelerate the deployment of its PelaFlex platform, a floating wind solution designed for deep-water sites where conventional fixed-bottom foundations are not viable.
Marine Power Systems said the investment will help move the technology from advanced development towards commercial-scale deployment and manufacturing. The company also plans to expand its industrial and assembly capabilities in the UK.
The PelaFlex platform has been designed to simplify fabrication, installation and long-term operations while enabling wind farms to be located further offshore where wind speeds are typically stronger and more consistent, MPS says.
The offshore wind industry in Wales seems to be gearing up for a big expansion.
Gwynt Glas is the collective name for the three 1.5 GW floating wind farms in the Western Approaches and in Gwynt Glas And South Wales Ports Combine Strength In Preparation For Multi-Billion Floating Wind Industry, I describe the initial agreement that started the Gwynt Glas project.
To my mind, Associated British Ports and the wind farm developers are making sure they can carpet the Western Approaches, with offshore wind farms.
In Ocean Winds Enters Lease Agreement With Crown Estate For 1.5 GW Celtic Sea Floating Wind Project, I talk in general about the progress of the first three 1.5 GW floating wind farms in Gwynt Glas and in particular about leasing of the third wind farm.
These two posts, indicate that the Port of Port Talbot is preparing itself to produce the floaters for floating wind turbines.
It certainly appears, that South Wales will be able to build the heavyweight gubbins for floating offshore wind.
According to Was South Wales Once The World’s Largest Coal Exporter? it was, and in 1913, the region produced 57 million tons of coal, with more than half exported.
It does look like South Wales is going to repeat the economic success with offshore energy.
I’ve heard tales from elderly Welshmen talking of the coal ships in the docks of South Wales and will we be seeing gas tankers in the docks of South Wales?
March 13, 2026
Posted by AnonW |
Energy, Finance & Investment | Floating Wind Power, Innovation, Marine Power Systems, Offshore Wind Power, Port Of Port Talbot, South Wales, Wales, Welsh Government, Wind Power |
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I asked Google AI, the title of this post and received this answer.
Yes, South Wales was once the world’s largest coal-exporting region and home to the busiest coal-exporting ports in the world. During its peak in 1913, the South Wales coalfield supplied almost one-third of total global coal exports, with Cardiff and Barry leading the world as the top coal ports.
Key details regarding the coal boom in South Wales:
Peak Production: In 1913, the region produced 57 million tons of coal, with more than half exported.
Top Export Ports: In 1913, Barry was recognized as the world’s largest coal-exporting port, closely followed by Cardiff.
The “Coal Metropolis”: Cardiff became the world’s leading coal and shipping metropolis, with the Cardiff Coal Exchange setting the global price for steam coal.
Economic Impact: The boom drove massive population growth in the South Wales Valleys and created tremendous wealth for cities like Cardiff, Barry, and Newport.
Global Demand: Welsh coal was highly sought after for its high quality, fueling steamships, railways, and industries across the world, from Russia to South America.
By 1920, the industry employed over 270,000 miners, but it saw a steep decline thereafter due to economic depression, international competition, and the exhaustion of accessible reserves.
March 13, 2026
Posted by AnonW |
Energy, Uncategorized | Cardiff, Coal, Coal Mines, South Wales, Wales |
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The title of this post is the same as that of this article on the Solar Power Portal.
This is the sub-heading.
As part of the reset, NextEnergy said it will increase its energy storage exposure up to 30% of its gross asset value, a significant increase on its current rate of 10%.
These two paragraphs give more of their reasoning.
NextEnergy Solar Fund has completed a “strategic reset” of its investment strategy which will see it focus on energy storage assets and increase project sales.
As part of the reset, NextEnergy said it will increase its energy storage exposure up to 30% of its gross asset value, a significant increase on its current rate of 10%. The company said the shift would “enhance the Company’s existing stable revenues generated by its operational solar assets and support future revenues”.
In Is Sumitomo Heavy Industries Highview Power Energy Storage System On Line At Hiroshima?, I describe a power supply system developed by Sumitomo Heavy Industries to supply a stable 5 MW to a LNG Terminal, using these components.
- A Cold Source
- Solar Panels
- A 5 MW/20 MWh Highview Power liquid-air CRYObattery.
Do Sumitomo Heavy Industries believe that a combination of energy and/or battery sources working together gives the quality of stable power, that is needed by today’s modern factories, facilities and buildings?
As a Graduate Control Engineer, I very much believe stable power supplies are a good thing and Sumitomo Heavy Industries obviously feel that Highview Power’s liquid air CRYObatteries are a good way to provide them.
The adding of a battery into a solar-powered renewable power supply, would surely, increase the amount of batteries that NextEnergy were financing.
March 12, 2026
Posted by AnonW |
Energy, Energy Storage, Finance & Investment | 5 MW/20 MWh CRYOBattery, Control Engineering, CRYOBattery, Highview Power, LNG Terminal, NextEnergy, Solar Power, Sumitomo Heavy Industries |
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The title of this post, is the same as that of this article on H2-View.
These four paragraphs introduce the article.
The European Commission has given a renewed push to nuclear development, which may open the door for more pink hydrogen.
Direct, large-scale pink hydrogen production in Europe is currently very limited, as the industry is still in its pilot and policy-alignment phase. Over 95% of European hydrogen is still produced from fossil fuels, primarily through steam methane reforming.
Speaking at the Nuclear Energy Summit, President Ursula von der Leyen pledged €200m to support private investment in nuclear technologies and unveiled a new European strategy for small modular reactors with the aim that they are operational by the early 2030s. Funding will come from the Emissions Trading System.
“After years of declining investment, we need more to turn the tide,” she said.
It is certainly an article worth giving a good read, as it is a view from the very top.
March 10, 2026
Posted by AnonW |
Hydrogen, Energy | Nuclear Power, European Union, Ursula von der Leyen, Pink Hydrogen |
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The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
RWE has placed a firm wind turbine order with Vestas for its 1,380 MW Vanguard East offshore wind project in the UK, shortly after confirming a firm order for Vanguard West, which will have the same installed capacity.
These three paragraphs add more details.
For Vanguard East, Vestas will supply, deliver, and commission 92 of its V236-15.0 MW wind turbines, and will also be in charge of servicing them under a five-year service agreement, followed by a long-term operational support agreement.
RWE expects to make a final investment decision (FID) for both Vanguard East and Vanguard West in the summer of 2026, with wind turbine deliveries for Vanguard East to begin in the fourth quarter of 2028.
The commissioning of Vanguard West is expected in 2029, with Vanguard East following suit in 2030.
Note.
- On the 23rd of February, 2026, RWE placed a similar order for Vanguard West with Vestas.
- In Global Investor Joining RWE On Two Norfolk Vanguard Offshore Wind Projects, FID Expected in Summer, I describe how KKR are taking a stake in the two of the Norfolk Vanguard Offshore Wind Projects.
Things are looking good for RWE, Norfolk and wind power.
March 10, 2026
Posted by AnonW |
Energy | KKR, Norfolk, Norfolk Vanguard East Wind Farm, Norfolk Vanguard West Wind Farm, Offshore Wind Power, RWE, Vestas, Wind Power |
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The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Ocean Winds has entered into an agreement for lease with the Crown Estate for a 1.5 GW floating offshore wind project, for which the developer secured a site in the Round 5 seabed auction last year.
These two paragraphs add detail to the story.
Offshore Wind Leasing Round 5, the UK’s first dedicated floating wind seabed leasing round, was launched in February 2024, offering three areas. In June 2025, the Crown Estate announced Equinor and Gwynt Glas, a joint venture between EDF and ESB, as preferred developers for two project sites and said it was working to ensure the delivery of the full potential capacity of Round 5, which is up to 4.5 GW.
Equinor and Gwynt Glas entered into lease agreements for their floating wind projects in October 2025 and, the following month, the Crown Estate said Ocean Winds had secured the third floating offshore wind site in the Celtic Sea.
This map shows the three wind farms, that make up the Glynt Glas wind farm.
Note.
- It is expected to be built from and connect to the grid at Port Talbot in South Wales.
- The three sites are expected to be commissioned by the early-to-mid 2030s.
- The elongated white dot to the East of the wind farms would appear to be Lundy Island.
- The large bay to the North of Lundy is Carmarthen Bay with Caldey Island at its West end and Llanelli on its East.
- The Gower separates Swansea Bay from Carmarthen Bay.
This Google Map shows the Bristol Channel from the wind farms in the West to Cardiff and Hinkley Point.
Note.
- Along the North coast of the Bristol Channel, working from West to East, my 78-year-old eyes can pick out Milford Haven, Pembroke, Caldey Island, Tenby, Llanelli, Swansea, Port Talbot, Porthcawl, BridgendCaerphilly, Cardiff and Newport.
- Coming back along the South Coast, I can see Weston-super-Mare, Hinkley Point C and the tip of Lundy Island in line with Tenby.
- The three sections of Glynt Glas will each generate 1.5 GW, making a total of 4.5 GW.
- Hinkley Point C when completed, will be a 3.26 GW nuclear power station.
- There is also a 2.2 GW gas-fired power station at Pembroke.
Nearly 8 GW of renewable electricity should be enough to convert Port Talbot steelworks to the manufacture of green steel.
How Much Wind Power Is Planned For The Western Approaches?
I asked Google AI, the title of this section and received this answer.
The UK has a target of 50 GW of offshore wind by 2030, with significant projects planned for the Celtic Sea (part of the Western Approaches), which is a key area for 5 GW of floating wind. Total UK offshore wind pipeline capacity exceeds 93 GW, with major developments in this region focusing on floating technology.
Key details regarding wind power in the Western Approaches (specifically the Celtic Sea) include:
Celtic Sea Developments: The area is a primary focus for floating wind projects, designed to capitalize on deep-water potential, with 5 GW of floating wind expected to be deployed across the UK by 2030.
Pipeline and Capacity: The total UK pipeline for offshore wind, which includes the Western Approaches, is 93 GW, and the government is aiming for 43-50 GW of installed offshore capacity by 2030.
Project Status: The region is expected to benefit from the Crown Estate’s leasing rounds aimed at accelerating floating wind, with 15.4 GW of new projects submitted across the UK in 2024.
Wales/South West England Context: Wales has 1.4 GW of projects in the pre-application stage, with some potential for developments off the South West coast.
For more detailed information on specific projects and their development status, you can visit the RenewableUK website and RenewableUK website.
It looks like about 20 GW of offshore wind could be installed in the Western Approaches.
March 4, 2026
Posted by AnonW |
Artificial Intelligence, Energy | Bristol Channel, Cardiff, Celtic Sea, Contracts for Difference Allocation Round 5, Crown Estate, EDF, Equinor, ESB Group, Floating Wind Power, Google AI, Green Steel, Gwynt Glas Wind Farm, Lundy Island, Milford Haven Station, Newport, Ocean Winds, Offshore Wind Power, Pembroke, Port Of Port Talbot, Port Talbot, Swansea |
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The Anonymous Widower 