How Long Does It Take To Build An Offshore Wind Farm?
These are some timescales and costs for the construction of some wind farms.
East Anglia One
East Anglia One is a 714 MW offshore wind farm, which consists of 102 turbines on fixed foundations, in a maximum water depth of 53 metres.
- Planning consent – June 2014.
- Contracts – April 2016
- Offshore construction – June 2018
- Commissioned – July 2020
It is expected to cost £2.5 billion.
Hornsea One
Hornsea One is a 1200 MW offshore wind farm, which consists of 174 turbines on fixed foundations, in a maximum water depth of 30 metres.
- Planning consent – April 2014.
- Contracts – March/April 2016
- Offshore construction – January 2018
- Commissioned – March 2020
It is expected to cost £4.2 billion.
Hornsea Two
Hornsea Two is a 1400 MW offshore wind farm, which consists of 165 turbines on fixed foundations, in a maximum water depth of 30 metres.
- Planning consent – August 2016.
- Offshore construction – 2020
- Commissioned – August 2022
I can’t find any costs.
Moray East
Moray East is a 950 MW offshore wind farm, which consists of 100 turbines on fixed foundations, in a maximum water depth of 50 metres.
- Planning consent – 2014.
- Financial Close – December 2018
- Offshore construction – July 2020
- Commissioned – July 2022
It is expected to cost £2.6 billion.
Keadby Wind Farm
Keadby Wind Farm is a 68 MW onshore wind farm, which consists of 34 turbines.
SSE says this about its construction timescale.
After receiving planning permission in 2008, construction began in 2012 and the first turbine foundation was complete in February 2013. The final turbine was assembled on 11 December 2013 and the project was completed in summer 2014.
I can’t find any costs.
Can I Deduce Anything?
Two things are similar on the four fixed-foundation offshore wind farms.
Planning Consent To Commissioning Seems To Take About Six To Eight Years
Moray East took eight years and the other three took six.
In addition Keadby onshore wind farm took six years.
This indicates to me, that any improvements to the planning process for wind farms could shorten the planning process for many wind farms and allow offshore construction of these wind farms to start earlier.
The Start Of Offshore Construction To commissioning Seems To Take About Two Years
It surprised me that it takes twice as long to go from planning to the start of offshore construction, than to actually build and commission the offshore components of the project.
In addition Keadby onshore wind farm took two years.
How will these two observations affect floating wind farms, which could be more numerous in the future?
The home page of the Principle Power web site, shows a floating wind turbine being constructed and floated out.
- The turbine and its float are assembled in a deep water dock, using a large crane mounted on the dock.
- This dockside assembly must be less dependent on good weather, than doing assembly onto a fixed foundation forty miles or more out to sea.
I wouldn’t be surprised to find that floating wind farms may have substantial health and safety, and construction advantages, but I doubt they’d save much time on the current two years of offshore construction.
But I suspect, they would be one of these types of project that would only rarely be late.
Assembly And Project Management Issues
As with many types of construction, I suspect good project management will be key to building both fixed-foundation and floating offshore wind farms.
For fixed-foundation wind farms, a steady stream of turbines, foundations, substations and connecting cables would need to be delivered to a tight schedule to the assembly point offshore, where turbines, foundations, substations and connecting cables would be lifted into place by a crane mounted on a barge or ship.
For floating wind farms, a steady stream of turbines, floats and probably some connecting cables would need to be delivered to a tight schedule to the assembly dock in a convenient port, where turbines would be lifted onto floats by a crane mounted on the dock. Once complete, the floating wind turbines would be towed into position, anchored and connected to the offshore sub-station.
- No large offshore crane would be needed.
- The dockside crane could be sized for the largest turbines.
- Floating turbines would be brought back to the dockside for major serving and updating.
- One assembly dock could serve several wind farms during construction and operation.
Given that in the latest ScotWind leasing round, there was 17.4 GW of floating wind farms and 9.7 GW of fixed-foundation wind farms, which is 64/36 % split, I can see that the proportion of floating wind farms will increase.
Good project management, with particular attention to the rate of the production of critical components will be needed for both fixed-foundation and floating offshore wind farms.
Perhaps it would help, if we reduced the numbers of types of each components?
Would it be too far to imagine a British Standard float, that could handle any manufacturer’s turbine with a standard connecting cable? This is Plug-and-Play at the very heavy end.
Conclusion
Consider.
- As the floating wind technology matures, I can see the designs getting more affordable and the proportion of floating wind farms increasing dramatically.
- I also believe that in the future, it will take a shorter time to install, connect up and commission a wind farm.
This leads me to think, that in future, it is reasonable to make the following assumptions.
- It will take six years or less from planning consent to commissioning.
- It will take two years or less from the start of construction to commissioning.
Note.
- I’m assuming that better project management and improved government legislation, will tend to level down the times.
- Floating or fixed foundations doesn’t seem to make much difference.
The UK will become Europe’s zero-carbon power station.
Maximising Space In North Sea Essential To Tackling Energy Security And Net Zero Targets
The title of this post, is the same as that of this article on the Eastern Daily Press.
These two paragraphs introduce the article.
Reviving wells in the Southern North Sea, powering oil and gas platforms with wind turbines, capturing and storing CO2 and hydrogen systems, starting work on world-class offshore wind farms off the coast and consent for Sizewell C nuclear power station – the East of England is ripe with opportunity for companies ready for the challenge.
The industrialised North Sea is becoming supercharged in the name of UK energy security – so much so that a spatial planning exercise is under way to optimise the seabed for energy security and make everything fit for maximum efficiency.
This is an article, that must be read fully.
These are some topics that are discussed.
- Looking at old wells to see if more oil and gas can be extracted.
- Electrification of oil and gas facilities, where economic and possible.
- Powering oil and gas facilities with offshore wind.
This is also said about the Innovation and Targeted Oil and Gas (INTOG) leasing round.
The Innovation and Targeted Oil and Gas (INTOG) leasing round is open for developers to apply for the rights to build offshore wind farms specifically to provide low-carbon electricity to power oil and gas installations in Scotland. It offers the opportunity to enable small scale (less than 100MW) innovation projects, including alternative outputs such as hydrogen.
It looks like mopping up the oil and gas in the North Sea could be promoted as a possible alternative to fracking.
I shall be interested to see how INTOG progresses.
At worst, it will mean that oil and gas installations will be powered by zero-carbon electricity, but in addition it could recover worthwhile amounts of oil and gas.
Thoughts On The Mini-Budget
This article on the BBC is entitled At A Glance: What’s In The Mini-Budget?.
If nothing else KK has whipped up a storm, with the most tax-cutting budget in decades.
But!
According to my calculations in Will We Run Out Of Power This Winter?, the planned offshore wind that will be installed between 2022 and 2027 will be at least 19 GW. About 3 GW of this offshore wind is already producing electricity.
To this must be added 3.26 GW for Hinckley Point C, 2 GW for solar and 0.9 GW for onshore wind in Scotland, which will be developed by 2027.
So we have 25.2 GW for starters.
Following on from this is the 27.1 GW from ScotWind, about 4 GW from the Celtic Sea, 3 GW from Morecambe Bay and 10 GW from Aker’s Northern Horizons. All of these are firm projects and some are already being planned in detail.
These wind and solar farms are the collateral for KK’s borrowing.
The corporate tax changes will hopefully attract world class energy and manufacturing companies to set up UK-domiciled subsidiaries to develop more offshore wind farms and manufacture the turbines and the electrical gubbins close to where they will be installed.
As more wind farms are built, many GW of electricity and tonnes of hydrogen will be exported to Europe.
Note that 1 GW for a day costs around £ 960,000 and for a year costs £350.4 million.
A big benefit of all this electricity, will be that we won’t need to frack.
Technologies like green hydrogen, that will be created by electrolysis will reduce our need for gas.
We might develop a gas field like Jackdaw, to give us gas for a backup with a few gas-fired power stations, for when the wind doesn’t blow, but gas will only have a minor roll.
The force of the maths is with KK!
Have We Missed The Boat On Fracking?
I have just re-read my post from October 2019, which was entitled Fracking Hell…Is It The End?, where these were my conclusions.
- Fracking for hydrocarbons is a technique that could be past its sell-by date.
- The use of natural gas will decline.
- INEOS could see hydrogen as a way of reducing their carbon footprint.
- The heating on all new buildings should be zero carbon, which could include using hydrogen from a zero-carbon source.
- There are reasons to think, that electricity from wind-farms creating hydrogen by electrolysis could replace some of our natural gas usage.
So will the Government’s lifting on the ban on fracking make any difference?
The announcement is detailed in this article on the BBC, which is entitled Fracking Ban Lifted, Government Announces.
These are my thoughts.
Fracking Is Not A Quick Fix
My personal view is that to achieve any significant amounts of gas from fracking will take some years, so it is not something that will be available in the short term.
Opposition To Fracking Won’t Help
There are very few inhabitants of the UK, who are enthusiastic about fracking.
Opposition to fracking will make it less likely to be the feasible short term fix we need in the UK.
Suppose There Was An Earthquake Near To A Fracking Site
Fracking also has the problem, that if there were to be a small earthquake near to a site, even if it was very likely to have not been caused by fracking, it would result in massive public uproar, which would shut down all fracking in the UK.
This to me is a big risk!
Would The Jackdaw Oil And Gas Field Be A Medium Term Solution?
- In Shell’s Jackdaw Gas Field Given Go-Ahead By Regulators, I wrote about Shell’s Jackdaw field, which has been given the go-ahead.
- It could be able to provide 6 % of North Sea gas production.
- It should be fully operational by 2025.
I believe that with other gas field developments and imports, Jackdaw could keep us supplied with enough gas until the end of the decade.
Future Renewable Electricity Production
In Will We Run Out Of Power This Winter?, I summarised the likely yearly additions to our offshore wind power capacity in the next few years.
- 2022 – 3200 MW
- 2023 – 1500 MW
- 3024 – 2400 MW
- 2025 – 6576 MW
- 2026 – 1705 MW
- 2027 – 7061 GW
Note.
- Ignoring 2022 as it’s going, this totals to 19.2 GW.
- Hopefully, by the end of 2027, Hinckley Point C will add another 3.26 GW
- According to Wikipedia, there are currently 32 active gas fired combined cycle power plants operating in the United Kingdom, which have a total generating capacity of 28.0 GW.
I think it is not unreasonable to assume that some of the electricity will enable some of our gas-fired power stations to be stood down and/or mothballed.
Gas consumption would be reduced and some power stations would be held in reserve for when the wind was on strike!
Using Hydrogen To Eke Out Our Gas
Consider.
- In Lime Kiln Fuelled By Hydrogen Shown To Be Viable, I wrote about how hydrogen can be used instead of or with natural gas to fuel a lime kiln.
- There are other processes, where hydrogen can be used instead of or with natural gas.
- Using more hydrogen will reduce the amount of carbon dioxide emitted.
Perhaps we should strategically build a few huge hydrogen electrolysers, so that some large industrial users can cut back on their natural gas.
Will Energy Storage Help?
Energy storage’s main use is to mop up all the surplus electricity when demand is low at a low price and sell it back, when demand is high.
If we waste less energy, we will use less gas.
Will District Heating Schemes Help?
Consider.
- In Eden Project: Geothermal Heat Project ‘Promising’, I wrote about the Eden Project’s plan to extract heat from a borehole.
- In ‘World-First’ As Bunhill 2 Launches Using Tube Heat To Warm 1,350 Homes, I wrote about a district heating scheme in Islington, that uses heat from the London Underground.
- In Exciting Renewable Energy Project for Spennymoor, I wrote about a district heating scheme, that uses heat from abandoned coal mines.
More schemes like this should be developed, where there is a readily-available source of heat or electricity
Conclusion
As we add more renewables to our energy generation, it appears to me, that our gas usage will decline.
If we were to go fracking, we should have done it a lot earlier, so we can bridge the short term gap.
How To Store Excess Wind Power Underwater
The title of this post, is the same as that of this article on the BBC.
The article talks why batteries are needed and then describes the Ocean Battery.
But one firm, which won a 2022 Best of Innovation award at the CES technology show earlier this year, believes it has the solution.
Dutch startup, Ocean Grazer, has developed the Ocean Battery, which stores energy below the wind farm.
When there is excess electricity the system pumps water from an underground reservoir into tough, flexible bladders that sit on the sea bed. You could think of them like big bicycle inner tubes.
The water in those tubes is under pressure, so when it is released the water flows quickly and is directed through turbines, also on the sea bed, generating electricity when needed.
“The Ocean Battery, is effectively based on the same technology as hydro storage, where water is pumped back through a dam in a river, though we have transformed it into something you can deploy on the sea bed,” says chief executive Frits Bliek.
There is a visualisation of the system and a picture of their prototype.
UK Cleantech Consortium Awarded Funding For Energy Storage Technology Integrated With Floating Wind
The title of this post, is the same as that of this page on the UK Government’s Catapult Offshore Renewable Energy Web Site.
This is the introductory paragraph.
STORE, a UK-based cleantech consortium led by RCAM Technologies Limited, has been awarded £150,000 of funding to develop an advanced subsea energy storage technology manufactured using 3D printed concrete that could help offshore wind farms produce a steady and predictable energy output to the electricity grid.
This paragraph talks of the concept of Marine Pumped Hydro.
STORE is assessing the feasibility of integrating Marine Pumped Hydro (MPH) technology, which stores energy using hollow concrete spheres fitted with a hydraulic turbine and pump, with floating offshore wind plants in UK waters. In addition, the project advances the design of MPH systems and plans a prototype demonstration in the UK.
Note.
- The hollow concrete spheres are 3D-printed in concrete using the technology of RCAM Technologies.
- Spheres are structurally very strong.
- 3D printing of concrete is now mainstream technology and has been extensively used on the Elizabeth Line as I wrote about in The Story Behind The Concrete Panels On The Elizabeth Line.
- There is a visualisation on the Catapult web page, which shows several floating turbines, a floating sub station and several concrete hemispheres sitting on the seabed.
- The energy storage medium is sea water and air, which must be environmentally-friendly.
The technology is described in detail on this page of the STORE consortium web site.
- The spheres are fifteen metres across.
- The spheres can be installed at depths between 150 and 2000 metres.
- The system has a round-trip efficiency is up to 70%, which is similar to pumped storage hydro.
- The design life is 50 to 80 years.
I think that this system has possibilities.
This last paragraph in the Catapult web page gives a look into the future.
As well as improving the reliability and predictability of energy to the electricity grid, the project will support the cross sector transfer of UK offshore expertise and port infrastructure for use in renewable energy and create high-value UK jobs in engineering, construction, and operations and maintenance. This energy storage solution is ideally suited to coupling with floating wind plants and for powering offshore oil and gas assets from renewable energy. The 3D printed concrete also facilitates localized manufacturing and enables low cost fabrication of new and complex shapes that were previously not practical.
I also feel that if the concrete sphere energy storage can be made to successfully work, then the technology can surely be fitted to any offshore wind farm, by just adding the right number of spheres and connecting them to the offshore sub station.
The STORE Consortium
The STORE consortium has a web site, which has a heading of Innovative Subsea Energy Storage.
It describes the technology in this paragraph.
STORE is advancing a subsea energy storage technology called Marine Pumped Hydro (MPH). MPH uses large hollow concrete spheres on the seafloor to store mechanical energy in the form of pressure. MPH charges when seawater is pumped out of the spheres and releases energy to the grid when high-pressure water flows back into the spheres through a turbine. MPH features a patent-pending multi-sphere pod to increase the amount of energy stored and uses efficient 3D concrete printing to reduce manufacturing costs.
It sounds like an engineer with children, has been playing with them and their plastic toys in a bath and has had an Archimedes moment.
The project and its funding is described in this paragraph.
STORE was awarded £150,000 from the Department for Business, Energy & Industrial Strategy Longer Duration Energy Storage Demonstration (LODES) competition. Phase 1 will deliver a Feasibility Study focused on the design and analyses for the UK. Phase 2, if awarded, will design, manufacture, and operate a prototype system at TRL 6.
Note that TRL 6 is Technology Readiness Level 6 and is fully defined on this NASA web page, as having a fully functional prototype or representational model.
There is also an interesting link to the ScotWind N3 wind farm. that I wrote about in ScotWind N3 Offshore Wind Farm.
- This is an unusual floating wind farm with a floating substation.
- Technip and Loch Kishorn port are involved in both the wind farm and STORE.
- Loch Kishorn has a history of building immense concrete structures.
I wouldn’t be surprised if this wind farm would be the location of the prototype system.
Conclusion
This is a brilliant concept.
- It is the ideal energy storage system for offshore wind, as it can turn a wind farm with a variable output into one with a much more constant output.
- It can be retrofitted to existing offshore wind farms.
- It will work with both fixed and floating wind farms.
- The concrete storage spheres can be fully assembled with all their electrical gubbins on shore and towed out, before sinking in the required position.
It also looks like the Department for Business, Energy & Industrial Strategy have got involved and helped with the funding. Someone there seems to know a good idea, when they see it!
IberBlue Wind Launches In Spain And Portugal With The Objective Of Promoting Iberian Leadership In Floating Offshore Wind
The title of this post is the same as that of this press release from the Simply Blue Group.
These three paragraphs introduce the project.
Simply Blue Group, Proes Consultores and FF New Energy Ventures have formed a joint venture that brings together expertise in all phases of floating offshore wind farm development.
The joint venture will focus its operations in Spain on Andalusia and Galicia, while in Portugal it will focus on the central and northern parts of the country.
IberBlue Wind aims to develop around 2GW of floating offshore wind farms.
This paragraph describes the plans of the Irish company; Simply Blue Group.
Simply Blue Group is a global developer of floating offshore wind farms with projects in Ireland, UK, US, Poland, and Sweden. Simply Blue Group currently has a pipeline of 10GW of projects under development. As part of its growth strategy, the company is now expanding into the Spanish and Portuguese markets.
It appears to be a very ambitious company.
Every GW of renewable energy helps.
Biden-Harris Administration Announces New Actions To Expand U.S. Offshore Wind Energy
The title of this post is the same as that of this fact sheet from the White House briefing room.
This is the sub-title.
Departments of Energy, Interior, Commerce, and Transportation Launch Initiatives on Floating Offshore Wind to Deploy 15 GW, Power 5 Million Homes, and Lower Costs 70% by 2035.
Some points from the fact sheet.
- The President set a bold goal of deploying 30 gigawatts (GW) of offshore wind by 2030, enough to power 10 million homes with clean energy, support 77,000 jobs, and spur private investment up and down the supply chain.
- Conventional offshore wind turbines can be secured directly to the sea floor in shallow waters near the East Coast and the Gulf of Mexico.
- However, deep-water areas that require floating platforms are home to two-thirds of America’s offshore wind energy potential, including along the West Coast and in the Gulf of Maine.
- Globally, only 0.1 GW of floating offshore wind has been deployed to date, compared with over 50 GW of fixed-bottom offshore wind.
- The Floating Offshore Wind Shot will aim to reduce the costs of floating technologies by more than 70% by 2035, to $45 per megawatt-hour.
- The Administration will advance lease areas in deep waters in order to deploy 15 GW of floating offshore wind capacity by 2035.
This all seems to be ambitious!
But!
- In ScotWind Offshore Wind Leasing Delivers Major Boost To Scotland’s Net Zero Aspirations, I looked at Scotland’s latest round of offshore wind leases.
- If the lessors carry out their proposals Scotland will add 9.7 GW of fixed-foundation offshore wind farms and 14.6 GW of floating offshore wind farms, which I estimate will be built by 2035.
- In Three Shetland ScotWind Projects Announced, I looked at three floating wind farms to the East of Shetland, which are a secondary deal after ScotWind, which could generate 2.8 GW by 2035.
- In Is This The World’s Most Ambitious Green Energy Solution?, I describe an ambitious plan called Northern Horizons, proposed by Norwegian company; Aker to build a 10 GW floating wind farm, which will be 120 km to the North-East of the Shetlands.
It could be possible that little Scotland installs more floating wind farms before 2035, than the United States.
And what about England, Wales and Northern Ireland?
- England hasn’t announced any floating wind farm projects, but has around 17 GW of fixed-foundation offshore wind farms under development in the shallower waters along the East and South coasts.
- In Two Celtic Sea Floating Wind Projects Could Be Delivered By 2028, I looked at prospects for the Celtic Sea between Wales, Ireland and Devon/Cornwall. It is possible that a GW of floating wind could be developed by 2028, out of an ultimate potential of around 50 GW.
- Northern Ireland is a few years behind England and Scotland and might eventually make a substantial contribution.
But Biden’s aims of a strong supply chain could be helped by Scotland, as several of the floating wind farms in Scotland are proposing to use WindFloat technology from Principle Power, who are a US company. The Principle Power website has an explanatory video on the home page.
North Seas Countries Commit To 260 GW Of Offshore Wind By 2050
The title of this post, is the same as that of this article on Renewables Now.
This is the first two paragraphs.
The nine member countries of the North Seas Energy Cooperation (NSEC) on Monday committed to at least 260 GW of offshore wind energy by 2050.
The NSEC aims to advance offshore renewables in the North Seas, including the Irish and Celtic Seas, and groups Belgium, Denmark, France, Germany, Ireland, Luxembourg, the Netherlands, Norway, Sweden and the European Commission.
Note.
Intermediate targets are 76 GW by 2030 and 193 GW by 2040.
The UK has a target of 50 GW by 2030, of which 5 GW will be floating offshore wind.
The UK is not mentioned, but has joint projects with the Danes, Germans, Irish, Norwegians, Spanish and Swedes.
There is nothing about energy storage or hydrogen!
On the figures given, I think we’re holding our own. But then we’ve got more sea than anybody else.
RCAM Technologies
Wouldn’t it be a good idea to have a wind turbine with built-in energy storage?
This article on Power Engineering, is entitled Five Long-Duration Energy Storage Projects Get Funding In New York.
One of the projects, from RCAM Technologies is described like this.
To develop a 3D concrete-printed marine pumped hydroelectric storage system that integrates directly with offshore wind development in support of grid resiliency and reduced reliance on fossil fuel plants to meet periods of peak electric demand.
That sounds like an offshore wind turbine with built-in energy storage, that is 3D-printed in concrete.
The RCAM Technologies web site is all about 3D-printed concrete.
- It looks like they can build taller wind farm towers, than you can make with steel.
- It appears offshore wind turbine tower with integrated foundations can be built on-site.
- Material can be 100 % locally-sourced.
- The next step could be to build some form of pumped storage into the tower.
- They are experimenting with storing energy as pressure in 3D-printed concrete spheres. The New York grant will help fund this.
- High Speed Two is using 3D-printing of concrete, as I wrote about in HS2 Utilising UK-First Pioneering 3D Concrete Printing On Project.
The company has offices in Colorado, California and Edinburgh.
Conclusion
This technology could be on the right track. Read their web site.
The Anonymous Widower 