Energy Security Boost After Centrica And Repsol Agree LNG Supply Deal
The title of this post, is the same as that of this press release from Centrica.
This is the sub-heading.
Centrica Energy and Repsol today announced the signing of a deal that will improve the UK’s energy security in the coming years.
These two paragraphs give more details of the deal.
The deal will see Centrica purchase 1 million tonnes of Liquified Natural Gas (LNG) shipments between 2025 and 2027. All of these cargoes are expected to be delivered to the Grain LNG import terminal in Kent.
The deal marks an additional move by Centrica to build further resilience in the UK’s energy security. It follows a 15 year, $8bn deal with Delfin Midstream in July 2023, a three-year supply agreement with Equinor that will heat 4.5m UK homes through to 2024 and the reopening and expansion of the Rough gas storage facility in October 2022 and June 2023 respectively. Rough now provides half of the UK’s total gas storage capacity with the potential to store over 50 billion cubic feet (bcf) of gas, enough to heat almost 10% of UK homes throughout winter.
Centrica do seem to be keeping us supplied with gas.
Two days ago, National Grid published this press release, which is entitled Grain LNG Signs New Deal With Venture Global Further Strengthening The Security Of Supply Of LNG To The United Kingdom.
This is the sub-heading.
Today (5 February), Grain LNG and Venture Global have announced the execution of a binding long-term terminal use agreement (TUA) enabling the regasification and sale of LNG from all of Venture Global’s LNG terminals in Louisiana, including CP2 LNG, subject to obtaining necessary federal permits.
These two paragraphs give more details of the deal.
Under the agreement, Venture Global will have the ability to access 3 million tonnes per annum (3MTPA) of LNG storage and regasification capacity at the Isle of Grain LNG receiving terminal for sixteen years beginning in 2029, equivalent of up to 5% of average UK gas demand.
This is the second agreement from Grain LNG’s competitive auction process which was launched in September 2023. The successful outcome of the auction further secures the future of Europe’s largest LNG import terminal into the mid 2040s.
Two big deals in the same week is not to be sneezed at and must be good for the UK’s energy security.
Grain LNG
The Grain LNG web site, greets you with this message.
Welcome To Europe’s Largest Liquified Natural Gas Terminal, Grain LNG
Grain LNG is the gateway connecting worldwide LNG to the European energy market, making a genuine difference to people’s lives. Find out all about our cutting-edge operations – showcasing our leadership in powering the future – and why Grain LNG is at the forefront of energy as we move towards net zero.
There is also a video.
This Google Map shows the location of Grain LNG on the Isle of Grain.
Note.
- The River Medway flows into the River Thames between the Isle of Grain on the left and the Isle of Sheppey on the right.
- From South to North, the red arrows indicate, the National Grid – Grain Terminal, National Grid L N G and Grain LNG.
There would appear to be space for expansion.
Heart Raises A Further $107 Million For ES-30 Hybrid-Electric Airliner
The title of this post is the same as that of this article on Future Flight.
Nine companies and funds participated in the funding.
BAe Systems are helping to develop the battery system, as reported in this article on Future Flight.
These two paragraphs describe progress and range respectively.
Heart said that its main engineering goal this year is to complete the development of the ES-30’s powertrain. The company has begun type certification under EASA’s Part 25 rules for commercial aircraft and aims to complete this process in 2028, after achieving a first flight with a prototype in 2026.
The ES-30 will be powered mainly by four battery-driven electric motors, now bolstered by a pair of turbo generators to meet reserve energy requirements “without cannibalizing range.” The new model is expected to offer carriers an all-electric range of 200 kilometers (125 miles), with an extended full-payload range of twice that distance and the potential for longer hybrid-powered flights to 800 kilometers (500 miles) with 25 passengers, taking account of standard airline fuel reserves.
Things seem to be going well for the ES-30.
Improvements To Brimsdown Station
This post on IanVisits is entitled Enfield Council Outlines Possible Rail Station Upgrades.
By reading Enfield Council documents, Ian has found possible station improvements that might happen.
Ian says this about Brimsdown station.
A modest development on the Brimsdown sports ground could contribute towards improvements to access and facilities at the nearby station, supported by some additional housing in clusters around the area.
This Google Map shows the station and the sports ground.
Note.
- The West Anglia Main Line runs North-South at the Eastern edge of the map.
- Brimsdown station is in the South-East corner of the map.
- Brimsdown sports ground is the green space to the North-West of the station.
- From zooming in, it looks like the main sport on the sports ground is fly tipping.
These pictures show the station.
Note.
- I feel today, was probably the first time, I’d caught a train either to or from the station.
- But I must of cycled over the level crossing scores of times going to work at Enfield Rolling Mills.
- After I got my driving licence, I also used to deliver my father’s stationery and other printed goods to the same firm.
Sadly, the firm, where I got my first real taste of industry, that taught me so much is long gone.
The Economic Case For Hydrogen In Domestic Heating
The title of this post, is the same as that of this article on The Chemical Engineer.
The Wikipedia entry for The Chemical Engineer has this introductory paragraph.
The Chemical Engineer is a monthly chemical engineering technical and news magazine published by the Institution of Chemical Engineers (IChemE). It has technical articles of interest to practitioners and educators, and also addresses current events in world of chemical engineering including research, international business news and government policy as it affects the chemical engineering community. The magazine is sent to all members of the IChemE and is included in the cost of membership. Some parts of the magazine are available free online, including recent news and a series of biographies “Chemical Engineers who Changed the World”, although the core and the archive magazine is available only with a subscription. The online magazine also has freely available podcasts.
It is a source on the Internet, where anything non-scientifically correct will be unlikely to appear.
The article has two introductory sub-headings.
Despite its thermodynamic disadvantages, global energy technology specialist Thomas Brewer believes hydrogen has an economic and efficient role in domestic heating. It forced him to deviate from his usual mantra of ‘efficiency above all else’ to get there, though
The work of decarbonisation by chemical engineers is about how we can cost effectively enable our organisations’ transition away from fossil fuels. This requires foresight. A decision chemical engineers make on a project with a 20-year lifespan will still be operational in 2045, when in most global locations, internal combustion engine (ICE) vehicles will probably be in the minority and grid electricity will be mostly renewable.
This is the first actual paragraph.
It is unsurprising, therefore, that chemical engineers are researching and debating the prospects of the future of energy availability from renewables, and the likely role and cost of hydrogen. There is much public noise surrounding the conversation about heat pumps vs hydrogen for domestic heating. I have noticed how few articles are written from an unbiased perspective, how very few reports talk about the whole solution, and authors avoid quantifying the financial impact of their proposed solution. I couldn’t find an unbiased study with any financial logic, so, I built a model to assess the options, for my own interests. I found the results so intriguing that I wanted to share them.
In other words, let the data do the talking and accept what it tells you.
These are some extracts from the article.
On Curtailment
The article says this on curtailment of wind energy, because you are generating too much.
Efficient electrical energy storage is expensive, which has traditionally led renewable system designers to include curtailment as a part of their design. Curtailment involves oversizing the wind supply to be higher than the grid connection to reduce the need for as much energy storage, and deliberately wasting the occasional electrical excess. The system design becomes an economical balance between oversizing the renewable generation and paying for additional electrical storage. Within the UK grid in 2023, curtailment is a small factor. As electrification and wind power become more mainstream, the financial decision between investing in excess wind vs electrical storage will lead curtailment to become a more significant factor.
Curtailment is to me a practice, that should be consigned to the dustbin of history.
To eliminate it, as much storage as is needed storage must be provided.
Eliminate Naked Flames In The Kitchen
The article says this about eliminating naked gas flames (natural gas or hydrogen) in the kitchen.
Figure 1 shows that the recommended standard of hydrogen gas installation if removing kitchen gas cooking would result in less injuries than the existing natural gas installation if cooking were converted to induction heating. Kitchen leaks are more likely than boiler leaks due to the number of valves and connections, regardless of the gas type. NOx emissions in the home because of naked flames in the kitchen are also of concern to the health of the occupants and hydrogen naked flames have a higher NOx emission than natural gas; another reason to eliminate naked flame cooking.
When I was financing the development of what became the Respimat inhaler, I did my due scientific diligence and found research from a Russell Group University, that naked flames (including smoking) were a cause of asthma, especially in children.
My recommendation is that, at an appropriate time in the near future, you replace your gas cooker with an electric one. My ginger-haired Glaswegian friend, who is a chef, who’s had Michelin stars would recommend an electric induction cooker.
Pumped Storage
The article says this about building more pumped storage.
The pumped storage assumption is based on the SSE proposal for Coire Glas, a 30 GWh £1.5bn storage system in Scotland which will more than double the UK’s current pumped storage capacity. The capital cost of this pumped storage system is about £50/kWh which will be delivered at about 80% efficiency. Pumped storage is a good balance between low cost and high efficiency. However, it requires natural resources. The Mott MacDonald report, Storage cost and technical assumptions for BEIS (Department for Business, Energy and Industrial Strategy) suggests the equivalent of four Coire Glas-scale installations in the UK by 2050. The model optimistically assumes that ten more similar additional Coire Glas-size pumped storage schemes could be installed.
This page on the Strathclyde University web site, gives these GWh figures for the possible amounts of pumped-storage that can be added to existing hydroelectric schemes.
Strathclyde’s total for extra storage is over 500 GWh.
Distributed Batteries
The article says this about distributed batteries.
A distributed battery assumption could be configured with multiple 10 kWh batteries which typically cost about £3,000 installed, near or in homes with a heat pump. This could be coupled with larger battery storage systems like the £30m Chapel Farm 99 MWh battery installation near Luton, commissioned in 2023. The small battery systems at each home are similar to the proposed virtual power plants using electric vehicle battery capacity to help balance the grid. Placing these batteries at locations with grid limitations could reduce the costs of upgrading the grid system. This is a more expensive energy storage scheme than pump storage and for the purposes of the model it is assumed that battery storage schemes are limitless. In both cases cited, the cost is £300/kWh. Battery efficiency varies significantly with temperature, and typically ranges from about 90% to 97%. As the system design needs to be focused on the coldest periods, the model is optimistically assuming 93% efficiency, which would require many of the batteries to be in a heated environment.
New lower-cost alternative batteries are also being developed.
Hydrogen Generation
The article says this about hydrogen generation.
Alternatively, the electricity generated from wind energy could be used in the electrolysis of water to produce hydrogen. While the fully installed electrolysis equipment costs about £2,100/kW, hydrogen storage in specially built cylinders is relatively cheap at about £23/kWh. The model, however, assumes salt mine storage which the US DoE in their report, Grid Energy Storage Technology Cost, calculate at a total system cost for hydrogen of $2/kWh. Electrolysis is the least efficient energy storage option, with a conversion efficiency of 75%, including compression. The waste heat from this conversion loss is useful for industrial heating, or in a district heating system. This has been ignored for simplicity.
Pumped storage, distributed batteries and hydrogen electrolysers distributed all over the UK, will mop up all the spare electricity and release it to heat pumps and for charging cars as necessary.
The hydrogen will be used for heating, to decarbonise difficult-to-decarbonise industries and provide fuel for hydrogen-powered vehicles, railways and shipping.
Curtailment will be a thing of the past.
The UK Offshore Wind Potential
The article says this about the UK offshore wind potential.
The UK government target for wind generation by 2030 is 50 GW. The UK offshore wind potential is reliable and available and has been estimated to be as high as 2,200 GW. There are, however, a few low wind periods that can last for several days.
I am not going to argue with 2,200 GW, but I will say that a lot of that will be used to generate hydrogen offshore.
Conclusions
This is the article’s main conclusion.
A wind-based supply for heating will mean that large quantities of potentially unused electricity will be available for more than 90% of the year, for potentially very low cost. While this could appear wasteful, it provides further synergistical opportunities for the decarbonisation of other interruptible energy duties, such as production of hydrogen for road transport or supplying heat via heat pumps for interruptible industries.
The sensitivity analysis shows that these conclusions are robust even with significant variation in the assumptions on equipment cost, efficiency, and other electricity source options.
This is also said about the most cost-effective solution.
A cost-effective national heat pump-only solution is about £500bn (50%) more expensive than a hydrogen-only boiler solution. The most cost-effective system is a combination of the two, £100bn cheaper than the hydrogen-only solution, and £600bn cheaper than the heat pump-only solution.
A cost-effective national heat pump-only solution has a system efficiency 40% lower than the hydrogen-only solution, requiring more than 750 GW of installed wind capacity. A hydrogen boiler solution requires less than 500 GW but the most efficient system, however, is a combination of the two.
The conclusions mean that everybody will be able to use the most appropriate solution for their circumstances for both heating their housing or powering their vehicles, as there will be massive supplies of affordable electricity and hydrogen.
How Will Everything Be Paid For?
Just as Germany and others built its industry on cheap Russian gas, it will now choose to use the plentiful and reliable UK electricity and hydrogen to rebuild its industry.
University Of Leeds Drills Test Boreholes For Geothermal Project To Heat Campus
The title of this post, is the same as that of this article on Ground Engineering.
This is the sub-heading.
A team of researchers at the University of Leeds has started to test the potential to use geothermal energy to heat buildings on campus in a bid to tackle its carbon emissions.
These three paragraphs outline the project.
The project involves drilling eight test boreholes into the ground at several locations on the campus at depths of between 150m to 250m. Work started last Monday (29 January) and will continue until May 2024.
Some of the holes will be water wells at around 50cm in diameter that will look for underground aquifers at the right temperature to use for geothermal heat. Other holes will be monitoring wells at around 15cm in diameter which the team will use to check what impact extracting heat from the ground has on the surrounding areas.
The geothermal project brings together the team responsible for the maintenance and development of the University estate and an academic team which includes professor of geo-energy engineering Fleur Loveridge, research fellow in geosolutions David Barns and lecturer in applied geophysics and structural geology Emma Bramham.
The Wikipedia entry for Geothermal Energy In The United Kingdom, is a very informing and ultimately surprising read.
This is the introductory paragraph.
The potential for exploiting geothermal energy in the United Kingdom on a commercial basis was initially examined by the Department of Energy in the wake of the 1973 oil crisis. Several regions of the country were identified, but interest in developing them was lost as petroleum prices fell. Although the UK is not actively volcanic, a large heat resource is potentially available via shallow geothermal ground source heat pumps, shallow aquifers and deep saline aquifers in the mesozoic basins of the UK. Geothermal energy is plentiful beneath the UK, although it is not readily accessible currently except in specific locations.
With more projects like that at the University of Leeds and the development of better technology, I am confident that over the next few years, we will extract more heat from beneath our feet.
Bruce Grove Station Restored To 1872 Glory
The title of this post, is the same as that of this article on the BBC.
This is the sub-heading.
Renovations at Tottenham’s Bruce Grove Station have breathed life into its disused rooms and paid homage to its Victorian history.
These three paragraphs outline the project.
Following structural repairs, the London Overground station now has a new community space and waiting room.
Haringey Council has worked in partnership with others to improve the station and its accessibility.
Work was completed in December 2023 and arrangements for using the community space will be finalised soon.
These are pictures I took this morning.
Note.
- The work is to a very high standard.
- Two rooms have been refurbished.
Other stations probably have rooms like these, that could be refurbished.
Gravitricity Weighs Up One Of Europe’s Deepest Mines
The title of this post, is the same as that of this article on The Engineer.
This is the sub-heading.
Scotland’s Gravitricity is set to deploy its underground energy storage technology at Pyhäsalmi Mine in central Finland, Europe’s deepest zinc and copper mine.
These two paragraphs outline the scheme.
Located about 450km north of the Finnish capital Helsinki, the Pyhäsalmi Mine extends 1,444m below the Earth. With mine operations at Pyhäsalmi winding down, the local community set up a development company to explore redevelopment projects around the mine’s infrastructure, including energy storage.
Gravitricity is set to deploy its GraviStore energy storage technology in a 530m deep auxiliary shaft. GraviStore can utilise off-peak electricity by raising heavy weights in the mine shaft, releasing the energy back on to the grid during high demand by lowering the weights. It’s claimed the 2MW scheme at Pyhäsalmi will provide grid balancing services to the Finnish network.
There is also this quote from Martin Wright,who is Gravitricity’s executive chairman.
This project will demonstrate at full scale how our technology can offer reliable long life energy storage that can capture and store energy during periods of low demand and release it rapidly when required.
This full-scale project will provide a pathway to other commercial projects and allow our solution to be embedded into mine decommissioning activities, offering a potential future for mines approaching the end of their original service life.
Can it be that Gravitricity is finally on its way?
Battery Traction Trial Ahead As TransPennine Express Fortunes Improve
The title of this post, is the same as that of this article on Railway Gazette International.
This is the sub-heading.
Overcrowding and short-notice cancellations at state-owned TransPennine Express have declined since the December timetable change, prompting Managing Director Chris Jackson to suggest the operator is in a ‘better place’.
It is a must-read article and the section called Battery Power Trial, says this.
Meanwhile, the Class 802 trainset which was damaged in a shunting accident in March 2022 remains out of traffic. Although No 802 207 has now been repaired, it will not be returning to service yet, as it is receiving modifications for use as a battery testbed.
This will see a 6 m long, 2·2 m wide battery module installed in place of one of the existing engines, which will improve fuel efficiency by using two diesel powerpacks rather than three.
The battery module will provide top-up power for peak demand and give regenerative braking capability when operating in diesel mode, which the trains currently do not have. Arrival and departure at stations is also to be trialled in battery mode to assess noise and air-quality improvements. The train is planned to re-enter traffic in December.
‘We’re supplying that unit to support what we think is a sensible industry scheme to look at whether we can do something to move from bi-mode to tri-mode, which could be beneficial for the industry from a green perspective’, Jackson confirms.
That looks to be a good plan, but I can’t help feeling that battery power for the Class 802 trains has been a long time coming.
This press release from Hitachi is entitled Hitachi And Eversholt Rail To Develop GWR Intercity Battery Hybrid Train – Offering Fuel Savings Of More Than 20%, which announced the project was published on the 15th December 2020.
It will be four years from when Hitachi and Eversholt Rail said go, before the prototype is running.
Is this why LNER bought their new trains from CAF?
Designing A Battery-Powered Mountain Goat
When I wrote Up To Ebbw Vale From Newport, this comment was posted.
I’m not surprised that the Class 150 train, had no difficulty in climbing up to Ebbw Vale Town. The max gradient is around 1 in 65. There are plenty of places in Britain where gradients are steeper and indeed part of the type test for all dmus was to climb the 2 mile, 1 in 37.7 Lickey Incline starting a couple of hundred metres before the beginning of the slope.
It certainly got me thinking.
Could a line like Newport and Ebbw Vale be decarbonised, by simply fitting batteries to an appropriately-sized electric train?
- The battery would be charged using the 25 KVAC overhead electrification in Newport station.
- The train would climb the hill to Ebbw Vale Town on battery power.
- Coming down the regenerative braking would charge the battery.
- Once in the platform at Newport station, the battery would be topped up, to the level needed to climb the hill, from the existing electrification.
The question is can the train carry enough juice in a battery?
I will work the example through with a three-car Class 331 train.
- I have chosen a Class 331 train, as CAF have a factory in Newport.
- The train weighs 30.48 tonnes.
- It has 213 seats.
- If I assume that each passenger is 80 Kg including baggage, bikes and buggies, that gives a mass of 17.04 tonnes or a total mass of 47.08 tonnes.
- The difference in altitude between Ebbw Vale Town and Newport is 764 feet.
Using Omni’s Potential Energy Calculator, that gives a value of 29.9 kWh.
This OpenRailwayMap shows the tracks from Newport to Pye Corner.
Note.
- Red tracks are electrified and black ones are not.
- Newport station is in the North-East corner of the map, with the South Wales Main Line running through.
- Pye Corner station is marked by the blue arrow and is the first station on the climb to Ebbw Vale.
- The unelectrified Ebbw Vale branch has a triangular junction with the electrified South Wales Main Line.
- The electrification continues for a short way towards Pye Corner and goes all the way to Newport and Cardiff.
- Trains take 24 minutes to turn round in Newport.
- Newport and Ebbw Vale Town is about twenty miles.
It can be safely said that trains will start their climb to Ebbw Vale with a full battery.
What Battery Size Will Be Needed?
I don’t think it will be that large and it will be the smallest battery, that could take a train up the hill.
As part of the climb is double track, the up track could be electrified to enable a smaller battery to be used, which would mean less power would be needed, due to the lower weight.
Conclusion
I believe that it will be possible to fit CAF’s Class 331 trains with a battery large enough to take a train up the hill to Ebbw Vale Town.
Ebbw Vale Town Station – 3rd February 2024
I took these pictures as Ebbw Vale Town station.
Note.
- There is a cableway to the main town.
- But t wasn’t working as it was Saturday.
- There is a large college.
- There was no information, as to how to get to the town.
- The Cardiff and Newport trains alternate every half hour.
The area certainly needed better information and perhaps a cafe, so that commuters can buy a coffee for their journey!
These are my thoughts.
The Capacity Of Ebbw Vale Town Station
According to this page on the Network Rail web site, the single platform at Ebbw Vale Town station is approximately 150 metres in length to fit up to six train carriages.
As at the current time, services are run by two- or three-car, it would appear that if a train failed in the station, the platform is long enough to accommodate another train to continue the services.
In the Wikipedia entry for Ebbw Vale Town station, it is indicated that a second platform could be built. There is certainly enough space.
Operation Of Ebbw Vale Town Station
I was at Ebbw Vale Town station for nearly two hours and I watched three Newport and two Cardiff trains arrive and leave every half-hour.
- I had arrived on the first train from Newport.
- The Cardiff trains were busy with passengers for the rugby.
- I took the third Newport train, so I could catch my train back to Reading.
- The system seemed to be working well.
Is there another single-platform station on a branch line, that serves two main line stations alternatively every half hour?
Increasing Capacity To Ebbw Vale Town Station
In Designing A Battery-Powered Mountain Goat, I stated that I believe that a small fleet of CAF’S Class 331 trains fitted with batteries could handle the Cardiff and Newport services to Ebbw Vale Town.
The sight and the curiosity of battery-electric trains climbing up the hills will certainly create more traffic on the route.
The simple solution is to lengthen the trains and that is easy at the moment, as the services are run using Class 150 trains with a Class 153 to add extra capacity, where needed.
But could a half-hourly service be run to both Cardiff and Newport?
This would double the capacity and make it more user friendly.
Nothing is said on the Internet about whether this is possible on not, but I believe that with modern digital signalling and battery-electric trains, with better performance than the elderly British Rail-era diesels, that it would be possible to run a half-hourly service to both Cardiff and Newport.
Conclusion
I believe that Network Rail have done a good job in designing this scheme.
