The Anonymous Widower

Octopus Energy On Xlinks

Today, Octopus Energy published a web page, which is entitled Backing Cheaper, Greener Energy Globally, giving more details of the Xlinks project.

I first wrote about the tie-up between Octopus Energy and Xlinks in Xlinks Welcomes New Investor Octopus Energy In Providing Cheap Green Power To Over 7 Million Homes.

Points made in the page on the Octopus web page include.

  • The project will cover over 570 square miles in Morocco with 7GW of solar and 3.5GW of wind generation alongside a 20GWh battery storage facility.
  • This green energy powerhouse will be connected to the UK via 2,361 miles of HVDC subsea cables.
  • The cables will be built with British steel in a new factory in Hunterton, Scotland.
  • It also appears that the site of the project has been chosen to optimise energy collection.

This project appears to be excellently-thought out to bring large benefits to all stakeholders.

June 29, 2022 Posted by | Energy, Energy Storage | , , , , , | 13 Comments

Rolls-Royce To Develop mtu Hydrogen Electrolyser And Invest In Hoeller Electrolyser

The title of this post, is the same as that of this press release from Rolls-Royce.

These are the three main points in the press release.

  • Holdings in start-up companies in northern Germany secure Rolls-Royce Power Systems access to key green hydrogen production technology.
  • Electrolysis systems for several megawatts of power.
  • First demonstrator in 2023 using a Hoeller stack.

This is the introductory paragraph to the deal.

Rolls-Royce is entering the hydrogen production market and acquiring a 54% majority stake in electrolysis stack specialist Hoeller Electrolyzer, whose innovative technology will form the basis of a new range of mtu electrolyzer products from its Power Systems division. Hoeller Electrolyzer, based in Wismar, Germany, is an early-stage technology company that is developing highly efficient polymer electrolyte membrane (PEM) stacks, under the brand name Prometheus, for the cost-effective production of hydrogen.

This page on the Hoeller Electrolysis web site gives details of Prometheus.

  • Hoeller are planning small, medium and large electrolyser modules, the largest of which is rated at 1.4 MW.
  • Load changes of between 0 and 100 % within seconds.
  • Cold start capability.
  • It will produce 635 Kg/day.
  • They are talking of a cost of 4€/Kg.

It all sounds good to me.

This paragraph is from the press release.

Founded in 2016, Hoeller Electrolyzer has positioned itself, with Prometheus, as one of the few highly specialized expert players in the field of high-efficiency PEM electrolysis stacks. Its founder, Stefan Höller, has more than a quarter of a century’s experience of developing electrolysis technology and has already registered 14 patents connected with Prometheus. Particularly high efficiency is promised by special surface technologies for the bipolar plates which significantly reduce the use of expensive precious metals platinum and iridium as catalysts, as well as increased output pressure.

I know a small amount about electrolysis and feel that Rolls-Royce may have got themselves a high-class deal.

Rolls-Royce’s large German presence in companies like mtu, will also help to smooth any doubts about the deal.

This paragraph indicates a shared belief.

Rolls-Royce and Hoeller Electrolyzer are united by a shared belief in the opportunity of zero-carbon energy – both for power supply and the propulsion of heavy vehicles. With decades of experience and systems expertise, Rolls-Royce is going to develop a complete electrolyzer system and has a global sales and service network, which opens up the potential for significant worldwide sales.

But perhaps, this is the most significant paragraph of the press release.

Armin Fürderer, who heads up the Net Zero Solutions business unit of Power Systems, said: “We’re going to launch electrolyzers with several megawatts of power right from the start. A total output of over 100 megawatts is conceivable by combining several electrolyzers.”

A quick search of the Internet, indicates that 100 MW is the size of the world’s largest electrolysers.

Applications

I can see applications for these large electrolysers.

Rolls-Royce Power Systems

This is a sentence from the press release.

Hoeller Electrolyzer, whose innovative technology will form the basis of a new range of mtu electrolyzer products from its Power Systems division.

The Rolls-Royce Power Systems web site, has this mission statement.

The Power Systems Business Unit of Rolls-Royce is focused on creating sustainable, climate neutral solutions for drive, propulsion and power generation.

In Rolls-Royce Makes Duisburg Container Terminal Climate Neutral With MTU Hydrogen Technology, I describe one of Rolls-Royce Power Systems projects.

The title of this post, is the same as this press release from Rolls-Royce.

This is the first sentence.

Rolls-Royce will ensure a climate-neutral energy supply at the container terminal currently under construction at the Port of Duisburg, Germany.

There is also this Rolls-Royce graphic, which shows the energy sources.

It would appear batteries,  combined heap and power (CHP), grid electricity, hydrogen electrolyser, hydrogen storage and renewable electricity are being brought together to create a climate-neutral energy system.

Note.

  1. The system uses a large hydrogen electrolyser.
  2. I suspect the hydrogen will be generated by off-peak electricity and local renewables.
  3. Hydrogen will probably power the container handling machines, ships, trucks, vehicles and other equipment in the port.

Hydrogen appears to be used as a means of storing energy and also for providing motive power.

I would suspect, the ultimate aim is that the port will not emit any carbon dioxide.

Other ports like Felixstowe and Holyhead seem to be going the hydrogen route.

Refuelling Hydrogen Buses and Charging Electric Buses

If you look at the Duisburg system, I can imagine a similar smaller system being used to refuel hydrogen buses and charge electric ones.

  • The hydrogen electrolyser would be sized to create enough hydrogen for a day or so’s work.
  • Hydrogen would be generated by off-peak electricity and local renewables.
  • If an operator bought more buses, I’m certain that the architecture of the electrolyser would allow expansion.
  • Hydrogen fuel cells would boost the electricity supply, when lots of buses needed to be charged.
  • Any spare hydrogen could be sold to those who have hydrogen-powered vehicles.
  • Any spare electricity could be sold back to the grid.

It should be noted that manufacturers like Wrightbus have developed a range of hydrogen and electric buses that use the same components. So will we see more mixed fleets of buses, where the best bus is assigned to each route?

I have used buses as an example, but the concept would apply to fleets of cars, trucks and vans.

Green Hydrogen

Large efficient electrolysers will surely be the key to producing large quantities of green hydrogen in the future.

It appears that about 55 MWh is needed to produce a tonne of green hydrogen using existing electrolysers.

The Hoeller electrolyser appears to be about 53 MWh, so it is more efficient.

Green Hydrogen From An Onshore Wind Farm

If you look at the average size of an onshore wind farm in the UK, a quick estimate gives a figure of 62 MW. I shouldn’t expect the figure for much of the world is very different, where you ignore the gigafarms, as these will distort the numbers.

An appropriately-sized electrolyser could be added to onshore wind farms to provide a local source of hydrogen for transport, an industrial process or a domestic gas supply for a new housing estate.

A single 5 MW wind turbine with a capacity factor of around 30 % would produce around 680 Kg of green hydrogen per day.

Green Hydrogen From An Offshore Wind Farm

There are basic methods to do this.

Put the electrolyser onshore or put the electrolyser offshore and pipe the hydrogen to the shore.

I think we will see some innovative configurations.

In ScotWind N3 Offshore Wind Farm, I described how Magnora ASA are developing the ScotWind N3 wind farm.

The floating turbines surround a concrete floater, which in the future could contain an electrolyser and tankage for hydrogen.

The ScotWind N3 wind farm is designed to be a wind farm rated at 500 MW.

I can see an electrolyser on the floater, of an optimal size to make sure all electricity is used.

Pink Hydrogen

Pink hydrogen, is zero-carbon hydrogen produced using nuclear-generated electricity.

There are industrial processes, like the making of zero-carbon chemicals, concrete and steel, that will require large quantities of zero-carbon green or pink hydrogen.

Rolls-Royce are developing the Rolls-Royce SMR, which will be a 470 MW small modular nuclear reactor.

One of these placed near to a steel works and coupled to one or more 100 MW electrolysers could provide enough zero-carbon electricity and hydrogen to produce large quantities of zero-carbon green steel.

Manufacturing

Rolls-Royce and their subsidiaries like mtu, seem to be extensive users of advanced manufacturing techniques and I would expect that they can improve Hoeller’s manufacturing.

Research And Development

The press release says this about the founder of Hoeller.

Its founder, Stefan Höller, has more than a quarter of a century’s experience of developing electrolysis technology and has already registered 14 patents connected with Prometheus.

If Rolls-Royce can develop and support Stefan Höller and his team, development could easily go to a higher level.

Conclusion

I think that Rolls-Royce have taken over a company, that will in the end, will design excellent efficient electrolysers.

 

 

 

June 29, 2022 Posted by | Hydrogen | , , , , , , , , , , , , , , , | 1 Comment

Five New Derbyshire Stations Could Be Built Under Rail Plans

The title of this post, is the same as that of this article on the BBC.

These paragraphs outline the schemes.

Up to five new railway stations could be built in Derbyshire as two projects to reopen existing lines to passengers have progressed in a government scheme.

The Barrow Hill line from Chesterfield to Sheffield could be opened to passengers as part of the government’s £500m Restoring Your Railway programme.

It would see stations built at Whittington, Barrow Hill, Eckington/Renishaw and Killamarsh.

It will now go through to the next stage of the scheme.

In addition, Derbyshire County Council said proposals to reopen the Ivanhoe line from Burton-upon-Trent to Leicester were being progressed as part of the project, which would see a new station built at Castle Gresley.

Business cases will now been drawn up to see if the cases will proceed.

Barrow Hill Line

I wrote about the Barrow Hill Line in Reinstatement Of The Barrow Hill Line Between Sheffield And Chesterfield.

Ivanhoe Line

I wrote about the Ivanhoe Line in Reinstatement Of The Ivanhoe Line.

There also is a Wikipedia entry for Gresley station, where this is said.

In the 1990s BR planned to restore passenger services between Leicester and Burton as the second phase of its Ivanhoe Line project. However, after the privatisation of British Rail in 1995 this phase of the project was discontinued. In 2009 the Association of Train Operating Companies published a £49 million proposal to restore passenger services to the line that would include reopening a station at Gresley to serve the town of Swadlincote.

This map shows the possible position of the station.

I suspect it would be to the West of the roundabout.

June 29, 2022 Posted by | Transport/Travel | , , , | 1 Comment

Northumberland Line On Track As Approval Granted

The title of this post, is the same as that of this article on the BBC.

These are the first three paragraphs.

A new rail line in Northumberland – including six new stations – is on track after getting ministers’ support.

The aim is to open the stations and upgrade track between Newcastle and Ashington by December 2023.

Following an inquiry, the government has granted a Transport and Works Act Order (TWAO) authorising the closure of level crossings and purchase of land.

Northumberland Council said it was a “key milestone”.

These two paragraphs describe the project.

Construction work on the line is due to start this summer.

It is planned to run a half-hourly passenger service along the 18-mile line, stopping at Bedlington, Blyth, Bebside, Newsham, Seaton Delaval and Northumberland Park Metro station.

We need more rail reopening like this to level-up the country.

June 29, 2022 Posted by | Transport/Travel | , , , , , , , , , | 2 Comments