Carlton Power, Stag Pool Knowledge For UK Energy Storage, Green H2
The title of this post, is the same as that of this article on Renewables Now.
This is the introductory paragraph.
British energy infrastructure developers Carlton Power and Stag Energy are merging their operations with plans to develop projects that will help improve energy storage, grid stability and green hydrogen production in the UK.
The article says this about Carlton Power.
Yorkshire-based Carlton has delivered more than 6 GW of thermal and renewables generation in the past 30 years. It is the lead developer of the Trafford Energy Park in Manchester, which foresees a 50-MW/250 -MWh liquid air energy storage plant to be built in partnership with Highview Power, a 200-MW hydrogen electrolyser and commercial hydrogen hub for use in transport and heating as well as a 250-MWe battery energy storage facility. Carlton also plans to expand its Langage Energy Park near Plymouth with the addition of energy storage and electrolyser facilities.
They certainly seem to have a history, that will be worth extending into the future, with energy storage and hydrogen production.
The article says this about Stag Energy.
Edinburgh-headquartered Stag Energy, for its part, has previously developed open-cycle gas-turbine (OCGT) plants in England and Wales and has a joint venture with Lundin to build the Gateway offshore underground gas storage facility in the Irish Sea using salt caverns. Stag Energy is also part of the National Grid’s Pathfinder process to uncover ways to improve electricity system stability.
This article on Hydrocarbons Technology is entitled Gateway Gas Storage Facility and starts with these two paragraphs.
The Gateway Gas Storage Company (Gateway) is developing an underground natural gas storage facility, Gateway Gas Storage Facility (GGSF), 25km offshore south-west Barrow-in-Furness, UK, in the East Irish Sea.
The GGSF plant has a strong locational advantage for developing offshore salt cavern gas storage facilities, according to the British Geological Survey.
In my time at ICI in Runcorn, I learned a lot about salt caverns and once had a memorable trip into their salt mine under Winsford, which was large enough to accommodate Salisbury cathedral. A couple of years later, I worked with a lady, who arranged for ICI’s historic documents to be stored in the dry air of the mine.
Natural Gas Storage In Salt Caverns
This section in Wikipedia describes how caverns in salt formations are used to store natural gas.
In the 1960s, ICI used to create boreholes into the vast amount of salt, that lay below the surface and then by pumping in hot water, they were able to bring up a brine, which they then electrolysed to obtain chlorine, hydrogen, sodium hydroxide and sodium metal.
When they had taken as much salt out of a borehole, as they dared, they would move on.
Provided the salt stayed dry, it didn’t cause any problems.
It sounds like the Gateway Gas Storage Facility will use new caverns carefully created under the Irish Sea.
This document from the Department of Energy and Climate Change is an environmental impact assessment of the project.
It has a full description of the project.
The proposed gas storage facility will be located southwest of Barrow-in-Furness, approximately 24 km. offshore from Fylde, North West England. It will comprise 20 gas storage caverns created in the sub-seabed salt strata. A single well will be drilled at each cavern location, and the salt will be removed using seawater pumped down the well. The dissolved salt, or brine, will then be discharged directly to the sea. The size and shape of the caverns will be controlled using an established technique known as Solution Mining Under Gas (SMUG). At each well location, a monopod tower facility will be installed, to house the solution mining equipment required during the construction phase, and the gas injection and extraction wellhead equipment that will be required for the storage operations. It is proposed that the monopod towers will be drilled into position, although there is a contingency for them to be piled into place if drilling is not feasible.
A short pipeline and methanol feeder pipe will connect each wellhead facility to an 8 km. ‘ring main’ linking all the caverns. The ‘ring main’ will consist of a single 36″ diameter gas pipeline with a ‘piggy-backed’ 4″ methanol feeder line. Two 36″ diameter carbon steel pipelines will connect the ‘ring main’ to the onshore gas compressor station at Barrow. A 4″ methanol feeder line will be ‘piggy-backed’ on one of these pipelines. Power for the offshore facilities will be provided via a single cable laid alongside the more southerly of the two pipelines, with individual connections to each monopod tower. The offshore sections of the pipeline and cable systems up to the point of connection with the ‘ring main’ will be approximately 19 km. in length. The pipeline and cable systems will be trenched, and the trenches allowed to backfill naturally. Where necessary this will be supported by imported backfill. The trenches for the two 36″ pipelines will be approximately 20 metres apart, and the trench for the power cable will be approximately 10 m from the more southerly of the two pipelines. The two pipelines will cross the Barrow Offshore Windfarm power cable and the ‘ring main’ will cross the Rivers Field export pipeline and the Isle of Man power cables. All crossings will be suitably protected.
Note.
- The multiple cavern structure would surely allow different gases to be stored. Natural Gas! Hydrogen? Methanol? Carbon Dioxide?
- On this page of the Stag Energy web site, they state that forty caverns could be created, with each having the capability of storing around 75 million cubic metres of working gas.
- Converting that amount of natural gas to gigawatt-hours (GWh) gives a figure of around 800 GWh per cavern.
- This page on the Statista web site, shows that we used 811446 GWh of gas in 2020, so we will need around a thousand of these caverns to store our gas needs for a year.
It sounds just like the sort of gas storage project we need for a harsh winter.
In Do BP And The Germans Have A Cunning Plan For European Energy Domination?, I talked about BP’s plans for wind farms in the Irish Sea and speculated that they would create hydrogen offshore for feeding into the UK gas network.
The Gateway Gas Storage Facility would be ideal for holding the hydrogen created by electrolysis offshore.
Conclusion
The deal does seem to be one between equals, who have an enormous amount of practical knowledge of the energy industry.
I also think, that it will see full development of the Gateway Gas Storage Facility.
Greater Manchester’s First Low Carbon Hydrogen Hub To Be Developed As Part Of New Collaboration
The title of this post, is the same as that of this article from Manchester Metropolitan University.
This is the first two paragraphs.
A new partnership aims to support ambitions for Greater Manchester to become the first Net Zero region in the world by 2040, with the planned installation of the city’s first low-carbon hydrogen hub.
For the first time, sustainable hydrogen fuel will be produced at scale in the region, creating opportunities for businesses in the area to make Net Zero plans with hydrogen in mind.
It doesn’t say much about the hydrogen hub, but from other sources, I have found the following.
it appears it will have the capability of producing 200 MW of green hydrogen.
- Carlton Power is the main developer.
- It will be built on the Trafford Low Carbon Energy Park.
- Building will start next year with operation scheduled for 2023.
- It will be built near Highview Power’s 50MW/250 MWh CRYOBattery.
It sounds ambitious. Especially, as it appears Carlton Power are talking about developing another ten similar sites in the UK.
Climate Emission Killer: Construction Begins On World’s Biggest Liquid Air Battery
The title of this post, is the same at that of this article in the Guardian.
This is the introductory paragraph.
Construction is beginning on the world’s largest liquid air battery, which will store renewable electricity and reduce carbon emissions from fossil-fuel power plants.
These are a few points from the Guardian and other articles on other web sites, including Wikipedia.
- The size of the battery is 250 MWh.
- It can delivery up to 50 MW of power. which translates to five hours at full power, if the battery is full.
- If it was already working, it would be the ninth biggest battery of all types, except for pumped storage, in the world.
- It will be built at Trafford Energy Park near to Carrington power station.
- It will be double the size of the largest chemical battery, which was built by Tesla in South Australia.
- It is being built by a company call Carlton Highview Storage, which is a joint venture between Carlton Power and Highview Power.
- It should start commercial operation in 2022.
- The installation of the battery is an £85million project.
- The Government have chipped in with a £10million grant.
Some reports say, this could be one of four of Highview Power’s 250 MWh CRYObatteries to be developed by the joint venture.
I will add some observations of my own.
Carrington Power Station
This Google Map shows the site of Carrington Power station.
Note.
- Flixton station is in the North-East corner of the map.
- Irlam station is on the Western edge of the map.
- South of the railway between the two stations, there is a large industrial site, that sits in a bend in the River Mersey.
This second Google Map shows an enlargement of the site.
Note.
- Carrington power station in the middle of the site.
- Large amounts of brownfield land.
- The Manchester Ship Canal passing to the West of the site.
Wikipedia says this about the design of Carrington power station.
The station is a Combined-Cycle Power Plant (CCPP), using natural gas to generate 884MW of electricity. The CCPP uses both a gas and a steam turbine together, to produce up to 50 percent more electricity from the same fuel than a traditional simple-cycle plant. The waste heat from the gas turbine is routed to the nearby steam turbine, which generates additional power. Carrington consists of two CCPP KA26-1 units. At operating design conditions, each CCPP unit generates 442.3 MW net output. The station generates enough power to meet the electricity needs of one million homes in the UK and began commercial operation on 18 September 2016.
Wikipedia also says the following.
- The plant has an efficiency of 58%. Is that good for this type of gas-fired Combined Cycle Gas Turbine power station? 64% seems to be about the best but Carrington is better than the about 50% possible with a conventional gas turbine plant.
- Much of the heavy equipment for the power station was brought by barge along the Manchester Ship Canal.
- The station is also a combined heat and power plant, capable of providing nearby businesses with steam, if they require a supply. This could be useful to a Highview Power CRYObattery, as a low-grade heat-source is needed to recovery the stored energy by warming the liquid air.
Given the following.
- There is space available near to the power station.
- A 250 MWh CRYObattery would probably fit in a size smaller than two football pitches.
- Carlton have permission to build another CCGT at the site.
- Carrington has a very good electrical connection to the grid, as nearly all power stations do.
- Heavy components can be brought in by barge on the canal.
, it would appear that the area would be a good place to site the first gr-scale CRYObattery.
Conclusion
I think siting the first grid-scale CRYObattery close to Carrington power station at the Trafford Energy Park, fits together well and I could see more CRYObatteries being installed in the following types of location.
- At existing power stations.
- On the sites of demolished power stations, that still have good grid connections.
- Where interconnectors and power from offshore wind connects to the grid.
I wouldn’t be surprised to see Drax Group install a system at one of their sites, as a CRYObattery could help cut their carbon-emissions.
The Anonymous Widower 