World’s First Unmanned HVDC Offshore Platform Installed At World’s Largest Offshore Wind Farm
The title of this post, is the same as that of this news item from the Dogger Bank wind farm web site.
These are the two bullet points.
- Dogger Bank Wind Farm will be first UK High Voltage Direct Current (HVDC) connected offshore wind farm
- 70% reduction in topside weight per MW for offshore platforms
These are my thoughts.
High Voltage Direct Current
Wikipedia has an excellent entry on high voltage direct current, which is commonly referred to as HVDC.
The news item says this about how the electricity is brought ashore from the Dogger Bank wind farm.
The innovative offshore platform has a lean design and is the first unmanned HVDC platform which will be operated from shore and accessed only by a Service Operations Vessel. The platform will receive 1.2GW of AC power from Dogger Bank A’s 95 offshore wind turbines and convert it to DC, which will then be sent ashore to an onshore convertor station near Beverley in East Riding of Yorkshire.
Fitted with Hitachi Energy’s latest generation HVDC converter technology, Dogger Bank will be the first offshore wind project in the UK to use this technology to transmit the electricity produced back to shore, ensuring that the electricity is transmitted efficiently over long distances while minimising losses.
Note.
- Wind turbines generate AC.
- There will be conversion to DC on the substation and conversion back to AC onshore.
- It should also be noted, that large undersea interconnectors are generally built around HVDC technology.
Wikipedia says this about the advantages of DC transmission.
A long-distance, point-to-point HVDC transmission scheme generally has lower overall investment cost and lower losses than an equivalent AC transmission scheme. HVDC conversion equipment at the terminal stations is costly, but the total DC transmission-line costs over long distances are lower than for an AC line of the same distance. HVDC requires less conductor per unit distance than an AC line, as there is no need to support three phases and there is no skin effect.
Depending on voltage level and construction details, HVDC transmission losses are quoted at 3.5% per 1,000 km (620 mi), about 50% less than AC (6.7%) lines at the same voltage. This is because direct current transfers only active power and thus causes lower losses than alternating current, which transfers both active and reactive power.
It looks like cost is a big factor.
My knowledge of grid systems and AC power is limited, as I was more of a Control Engineering and Electronics student at university.
But could HVDC-connected wind farms have advantages, when it comes to providing a reactive power capability to the grid, as I wrote about in Dogger Bank C In UK Offshore Wind First To Provide Reactive Power Capability.
Extra income is another good reason to choose something.
Lightweight Platforms
I’ve always been a fan of lightweight structures and it does seen that the engineers of the Dogger Bank Wind Farm have gone down that route.
This is a paragraph from the news item.
The platform will be controlled from shore and by removing the need for personnel to stay on the platform meant it has been possible to eliminate elements such as the living quarters, helideck and sewage systems, resulting in a 70% reduction in weight (per megawatt) of the topside compared to previous platforms installed, and cost savings of hundreds of millions of pounds.
Again costs are being reduced and profits increased.
We should never rule out the importance of the finances of a project. Once by simulating a chemical process on the computer for ICI, I knocked ten metres off the height of a chemical plant. I got a nice little bonus for that!
If they have made a substantial reduction in substation weight, this surely means that the supporting structure can probably be smaller and less costly.
Conclusion
I suspect, a lot more wind farms will follow the Dogger Bank example.
Businesses Back Hydrogen Trials To Accelerate Net Zero Ambitions
The title of this post, is the same as that of this news item on Centrica.
These are the three main findings of a business survey, to ascertain attitudes to hydrogen.
- Three quarters (77%) of businesses back hydrogen as part of their energy improvement strategy with a quarter (27%) intending to trial or implement it in the next two years.
- Almost one in ten (8%) respondents say they have already installed hydrogen-ready combined heat and power (CHP) units.
- A third (33%) of firms say energy costs are motivating them to adopt hydrogen.
This paragraph details who were surveyed.
We surveyed 500 executives in December 2022 and January 2023 across food and beverage manufacturing, healthcare, hospitality and travel, pharmaceutical manufacturing, heavy industry, horticulture and light industry. 24% of respondents were from the UK, 16% Ireland, 20% Netherlands, 20% Italy, 20% Hungary.
It certainly looks to be a well-constructed survey, with a wide range of respondents.
I have some thoughts.
Centrica And Combined Heat And Power
I was initially surprised that eight percent of respondents had already installed hydrogen-ready combined heat and power units.
But according to Centrica Announces Hydrogen Ready Combined Heat And Power Partnership With 2G, Centrica are preparing themselves for selling systems in this area.
Businesses Are Certainly Looking At Hydrogen
A figure of 77 % of businesses are looking at hydrogen and 27 % are investing in hydrogen.
But I don’t think the average man on the Clapham Omnibus would be so enthusiastic.
Costs Are Motivating Firms To Adopt Hydrogen
I would be surprised if costs didn’t have an effect.
But if costs are driving them towards hydrogen, then hydrogen must be more affordable.
Which is one in eye for hydrogen deniers, who always tell me it is more expensive.
Are Centrica Working To Drop Their Costs?
These posts would suggest they are.
- Centrica And Ryze Agree To Develop Hydrogen Pathway
- Centrica Announces Hydrogen Ready Combined Heat And Power Partnership With 2G
- Centrica Partners With Hull-Based HiiRoc For Hydrogen Fuel Switch Trial At Humber Power Plant
- Centrica Plan Green Energy Hub At Former Gas Power Plant
- Centrica Re-Opens Rough Storage Facility
- Lhyfe And Centrica To Develop Offshore Renewable Green Hydrogen In The UK
They are doing deals with start-ups and repurposing old plants and pipelines.
Conclusion
Centrica seem to be leading the charge to hydrogen in the UK.
Denmark Launches World’s First Power-to-X Tender
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
The Danish Energy Agency (DEA) has invited bids to build and operate Power-to-X projects with a deadline for applications set to 1 September. Through the tender – the first of this kind in both Denmark and the world – the country has made available DKK 1.25 billion (approximately EUR 167.7 million) in state support for the production of Power-to-X in the form of green hydrogen.
This paragraph outlines the deal.
The tender is being held to procure hydrogen produced by using renewable energy sources and is part of Denmark’s goal to reach between 4 and 6 GW of electrolysis capacity by 2030 and its Power-to-X strategy, released in 2021, according to which the country’s offshore wind resources provide good conditions for the production of green hydrogen, which requires large amounts of green electricity.
These are the conditions.
- Only hydrogen that is produced from renewable energy sources and meets the EU’s documentation requirements for green PtX fuels is eligible for support.
- The winning bidder(s) must have the project(s) built to full capacity and start green hydrogen production within four years of signing the contract with the Danish Energy Agency.
The tender has been approved for state aid by the European Commission.
I can see all the large electrolyser builders getting their bids ready for what will be tough competition.
Overview – Siemens Energy Electrolyser Deal Dwarfs Rest In Q1 2023
The title of this post is the same as that of this article on Renewables Now.
This is the first paragraph.
The global electrolyser market concluded the first quarter of 2023 with a variety of equipment supply deals, partnerships, framework agreements and even some firm contracts. Siemens Energy stood out with the news of its selection to equip a “world-scale” eFuels facility in Texas with a total capacity of 1,800 MW.
The article is a good summary of the electrolyser market.
SSE To Help Decarbonise 5000 Homes In Major London Retrofit Project
The title of this post, is the same as that of this news item on SSE.
These three paragraphs outline the work.
SSE Energy Solutions has agreed a deal with Berkeley Homes that will help to decarbonise a heat network for up to 5,000 homes in London, thought to be one of the largest retrofits of its kind in the country.
An Air Source Heat Pump (ASHP) system will be installed to supply the homes on an existing district heating network at the Woolwich Arsenal site after several options were considered, including the use of waste heat and ground and river source solutions. An ASHP was chosen as the best low carbon, low tariff option over the length of the supply contract.
The system will be installed in nearby Wellington Park where a new landscape will be created through a unique planting scheme that broadens the biodiversity of the area by responding to the microclimate. The ASHP will connect directly to the existing district heating network pipes, reducing the carbon content of the heat provided by the network.
It strikes me, that no new housing estates or blocks of flats, should be built without a district heating system.
In this example, SSE are able to decarbonise a large number of houses and flats, by just replacing a boiler with an air source heat pump.
Just imagine the hassle if five-thousand individual boilers had to be replaced.
Siemens Completes Study To Decarbonise Major UK Industrial Estate By 2038
The title of this post, is the same as that of this news item on Siemens UK web site.
This is the sub-heading.
Siemens has proposed a road-map for decarbonising Trafford Park, one of Europe’s largest industrial estates, to support Trafford Council’s aims for the Greater Manchester borough to achieve net zero by 2038.
This three paragraphs outline the proposal.
The Low Carbon Trafford Park 2038 study, proposed by Siemens, aims to identify, cost and measure the impacts of low carbon technologies at the industrial estate. It covers a broad range of solutions, from waste to energy and heat recovery from energy intensive industrial players, to the potential for solar photovoltaics across the park to generate 147 GWh of clean energy.
The study acts as a blueprint for the council to consider as it works to eliminate the 714,000 tonnes of carbon emitted from Trafford Park each year. The estate is home to 1,330 businesses employing more than 35,000 people, with a dense population of industrial and commercial occupiers over an area of 4.6 sq miles.
The Council aims to use the roadmap to facilitate stakeholder engagement and collaboration across the industrial park, aligning business and environmental goals to different commercial segments across recommended technological and behavioural measures. It will then consider its broader recommendations as part of a long-term plan in partnership with occupiers.
This is decarbonisation on a grand scale!
- Siemens expects the decarbonisation of Trafford Park to attract new business to the Park and maintain and enhance its standing as a commercial and industrial hub in the region.
- The measures recommended would require £1.2 billion of private and public investment to achieve a 94% reduction in emissions.
- The study provided Trafford Council with modelling of an extensive range of measures for conserving gas and electricity and for generating clean energy on-site.
This page on the Siemens web site is entitled Smart Infrastructure For A Sustainable Future, outlines some of the company’s solutions.
Conclusion
It will be interesting to see how Trafford Park decarbonises.
Seaway7 Installs Final Foundation At Seagreen Offshore Wind Farm
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Seaway7 has installed the final wind turbine foundation on Seagreen Offshore Wind Farm, off the coast of Angus, Scotland, concluding the 18-month installation campaign.
Note.
- As 114 foundations have been installed in eighteen months or just over six installations in a month.
- According to Deepest Ever Fixed-Bottom Wind Turbine Foundation Stands Offshore Scotland, each foundation weighs two thousand tonnes.
- Some are also the deepest ever turbine foundations with a depth or is that height of nearly sixty metres.
- The Seagreen web site, says that phase 1 will be complete in the second quarter of this year.
- The first phase will generate 1075 MW.
We should raise a few cheers for the companies involved.
Mingyang Building Fish Farm-Equipped Offshore Wind Jacket Foundation
The title of this post, is the same as that of this article on offshoreWIND.biz.
This is the sub-heading.
Chinese wind turbine manufacturer Mingyang Smart Energy revealed on 17 April that it started the construction of a jacket foundation that also features a net cage system for fish farming, which will be installed at the Mingyang Qingzhou 4 offshore wind farm in the South China Sea later this year.
The picture in the article, looks like something out of Baldrick’s book of cunning plans.
This paragraph gives more details.
The jacket is typhoon-resistant and the aquaculture system, which will raise up to 150,000 fish in 5,000 cubic metres of water, will have remote functions such as automated feeding, monitoring, detection, and collection, according to Mingyang.
Mingyang also state that the Qingzhou 4 offshore wind farm will also produce hydrogen.
Does that mean that in the next phase of the development, they’ll be putting a fish and chip shop on top?
Australia Climate Protest: Rising Tide Activists Shovel Coal Off Train
The title of this post, is the same as that of this article on the BBC.
This is the sub-heading.
About 50 climate activists have been arrested in the Australian state of New South Wales after protesters climbed on a train carrying coal and began shovelling its cargo out of the wagons.
At least with coal, the mess won’t do too much damage.
UK Government Grants £30 Million For Long Duration Energy Storage Projects
The title of this post, is the same as that of this article on Solar Power Portal.
These two paragraphs outline the grants and their recipients.
The UK Department for Energy Security and Net Zero (DESNZ) is providing £30 million in grants for three long-duration energy storage (LDES) projects using novel energy storage technologies.
The three projects awarded funding are from Synchrostor, Invinity Energy Systems and Cheesecake Energy. Synchrostor and Cheesecake Energy are to receive £9.4 million each to fund thermal energy storage systems and Invinity Energy Systems receiving £11 million to develop a vanadium flow battery.
The UK Government seems to give out a lot of these grants for research and development purposes and from feedback I have received from recipients and also by applying my own experience, I am of the opinion, that they are spending tax-payers money more in a wise, rather than a foolish direction.
Cheesecake Energy
I wrote about Cheesecake Energy’s grant in Cheesecake Energy Collects £9.4m Government Funding.
The Government’s press release says this about Cheesecake’s grant.
Cheesecake Energy Ltd, Nottingham, which will receive £9.4 million to test their FlexiTanker technology which stores electricity using a combination of thermal and compressed air energy storage and uses a reversible air compression / expansion train to charge and discharge. They will then install pilot units at 2 sites within a microgrid development in Colchester.
If this project proves successful, it surely is one that can be duplicated in many places.
I have had my eye on Cheesecake Energy for some time and this could be their breakthrough.
Invinity Energy Systems
I first wrote about Invinity Energy Systems in UK’s Pivot Power Sees First Battery On Line By 2021.
The Government’s press release says this about Invinity’s grant.
Invinity Energy (UK) Limited, Scotland, which will receive £11 million to develop and manufacture their 7MW, 30MWh 4-hour Vanadium Flow Battery (VFB), the largest in the UK. Invinity will manufacture the 30 MWh VFB at the Company’s factory in West Lothian, Scotland. The location of the plant will be confirmed in due course.
In this article on renews.biz, which is entitled Invinity Wins Funds For 30MWh UK Battery, these two paragraphs introduce the project.
Invinity Energy Systems plc has today been awarded £11m in funding by the Department for Energy Security and Net Zero to build what it says is the largest grid-scale battery ever manufactured in the UK.
The £11m in funding will come from the Longer Duration Energy Storage Demonstration (LODES) Competition, with funding matched by Invinity’s, as yet unnamed, project partner.
These are other points from the article.
- It will be a fast-response 30MWh battery.
- The battery will be assembled at Bathgate in Scotland.
- It will operate as a stand-alone energy storage asset.
- It will be connected to the National Grid.
- Invinity’s vanadium flow batteries are an alternative to lithium-ion.
The aim is to go live by 2025.
This paragraph indicates the differences between a vanadium flow battery and a traditional lithium ion one.
Invinity said this battery is safer as they cannot catch fire, more durable as they do not degrade with use and are almost completely recyclable at the end of their 25+ year life, reducing environmental impacts and disposal costs for project owners.
I believe that there will come a point, when fully-developed vanadium flow batteries, will become very attractive for financial reasons to the successful energy storage funds like Gresham House and Gore Street.
If the UK government’s funding hastens the day, when energy storage funds feel that these new-fangled vanadium flow batteries are a safe investment, then it is money well spent.
It is not as though the money is going to an early start-up, as this page on the Invinity Energy Systems web site indicates at least a dozen installations.
This project for an as yet unnamed customer, which has a capacity of 30 MWh, is probably much bigger and the Government help is probably very much welcomed.
SynchroStor
SynchroStor was new to me, today.
The Government’s press release says this about SynchroStor’s grant.
Synchrostor, Edinburgh, Scotland, which will receive £9.4 million to build a Pumped Thermal Energy Storage (PTES) grid-connected demonstration plant operating at 1MW, with the ability to charge and discharge for a period of 10 hours, longer than current battery technology.
This page named Technology on their web site, explains their technology, both with words and diagrams.
It is probably the most complex technologies of the three batteries, but I don’t think that will be a problem.
Conclusion
The Government has given grants to three different storage technologies.
If all goes well three good sizable pilot plants will be created and those companies like Centrica, Gore Street, Gresham House, National Grid, Ørsted, SSE and others, will be able to judge, which system is best for their needs.
