SSE Announces Construction Of Aberarder Wind Farm
The title of this post, is the same as that as an advert on my online edition of The Times.
Click the advert and you get this page, with the title of this post.
This is the sub-heading.
Aberarder secured 15-year CfD in UK Allocation Round 5
These three paragraphs give more details of the wind farm.
SSE has taken a final investment decision to proceed with Aberarder Wind Farm in the Scottish Highlands, in a circa £100m investment boost for its onshore wind portfolio.
Construction of the 12 turbine, 50MW wind farm, which is wholly owned by SSE Renewables, will begin before the end of the year with completion scheduled for the end of 2026. The Aberarder project was successful in September 2023 in the UK’s fifth Contract for Difference (CfD) Allocation round, securing a 15-year contract for low-carbon power generation.
Located at Strathnairn near Inverness, on a natural plateau at an average of 700m above sea level, the Aberarder project site sits directly adjacent to the operational 94MW Dunmaglass Wind Farm, which is jointly owned by SSE Renewables and Greencoat UK Wind.
It would appear that a £100m investment in the Scottish Highlands will get you a fully-operational 50 MW wind farm.
These are my observations and thoughts.
SSE’s Project Overview Of Aberarder Wind Farm
These four paragraphs are SSE’s project overview from this page on the SSE Renewables web site.
The Aberarder Wind Farm project is located in Strathnairn near Inverness, on a natural plateau at an average of 700m above sea level. It will sit directly adjacent to the operational 94MW Dunmaglass Wind Farm, which is jointly owned by SSE Renewables and Greencoat UK Wind.
The project was developed by RES and consented by The Highland Council in April 2017. The consent allows for the construction of a 12-turbine onshore wind farm, with each turbine having a maximum tip height of up to 130m and is expected to have an export capacity of 49.9MW. SSE Renewables reached an agreement with RES to acquire Aberarder in October 2022.
In September 2023 Aberarder was successful in the UK’s fifth Contract for Difference (CfD) Allocation Round and was awarded a 15-year contract for low carbon power generation. SSE took a final investment decision to proceed with Aberarder Wind Farm, in a circa £100m investment in May 2024, construction is scheduled to begin before the end of 2024 with completion scheduled for the end of 2026.
Our focus is now on building strong and meaningful relationships with the local community surrounding the Aberarder Wind Farm. As a responsible developer and operator, we are looking forward to working closely with the community in surrounding area to fully realise the benefits of this exciting project.
Construction has now started and it would appear that in two years, the twelve-turbine wind farm will be producing power.
SSE’s Description Of Dunmaglass Wind Farm
These four paragraphs are SSE’s description from this page on the SSE Renewables web site.
Located to the south east of Inverness, on a natural plateau at an average of 700m above sea level, Dunmaglass is SSE’s highest wind farm to be constructed.
SSE acquired the project from RES in May 2013 and initial enabling works began in the summer of 2013 which included the upgrading of 11km of tracks and the construction of two timber deck bridges.
Highland contractor RJ McLeod was awarded the £16m main civil works contract in summer 2014.
Dunmaglass became fully operational in 2017.
This paragraph also illustrates the challeges of the It looks like the construction of the larger Dunmaglass wind farm.
The height at which Dunmaglass is located presented its challenges during construction and the winter months brought high winds and plenty of snow. The site was fully completed and handed to the operations team in 2017.
Surprisingly, the legendary Highland midges didn’t get a mention.
The Sale Of 49.9 % Of Dunmaglass Wind Farm To Greencoat UK Wind
This sub-heading outlines the sale.
In February 2019, SSE sold 49.9% of Dunmaglass to Greencoat UK Wind PLC as part of a deal in which Greencoat acquired a 49.9% stake in both Dunmaglass and the nearby Stronelairg wind farm.
This paragraph gives more details of the sale.
In February 2019, SSE signed agreements for the sale of 49.9% of Dunmaglass wind farm to Greencoat UK Wind Plc (“UKW”). This sale was part of a £635m deal in which Greencoat acquired a 49.9% stake in both Stronelairg and Dunmaglass wind farms. The stakes equate to 160.6MW (megawatts) of capacity, with an average valuation for the two wind farms of around £4m per MW. This valuation demonstrates SSE’s ability develop quality, low carbon assets and infrastructure vital to the GB energy market.
The interesting figure is that SSE was paid £4m per MW for the interest of 160.6 MW, that they sold.
Aberarder wind farm is a 50 MW wind farm and it appears that it will cost £100 million to build.
If after a couple of years of operation, the wind farm is worth £4 million per MW, then SSE have doubled their money.
Does this illustrate, why the professionals like SSE and Greencoat UK Wind invest in wind farms?
- SSE would have taken the risk, that they could build the wind farm.
- SSE have the engineering skillsto do an excellent job.
- Greencoat UK Wind are buying into a producing asset, with a known cash flow.
SSE also get more money to build more wind farms.
Where Are Aberarder And Dunmaglass?
This Google Map shows the site of Aberarder wind farm with respect to Inverness.
Note.
- Inverness is at the top of the map on the waters of the Solway Firth.
- Aberarder wind farm is marked by the red arrow.
- Aberarder is a hamlet to the North-West of the wind farm.
- Drumnaglass is a shooting estate to the North-West of the wind farm.
- Loch Duntelchaig is the main reservoir for Inverness.
This second Google Map shows the Drumnaglass wind farm.
Note.
- Drumnaglass wind farm has 33 turbines and a capacity of 94.05 MW.
- There is a track network of 11 km. linking all the turbines.
- A good proportion of the turbines can be picked out on the map.
It would appear that Aberarder wind farm will lie to the South-East of this wind farm.
Aberarder Wind Farm To Fort Augustus
In Cloiche Onshore Wind Farm, I talked about the 130.5 MW Cloiche wind farm and its future construction to the East of Fort Augustus and Stronelairg wind farm.
This Google Map shows the position of Aberarder wind farm with respect to Ford Augustus.
Note.
- Loch Ness runs across the North-West corner of the map.
- Fort Augustus and Stronelairg wind farm, are at the Southern end of the loch.
- The red arrow shows Aberarder wind farm.
- Foyers pumped hydro is on the Eastern bank of Loch Ness, at about the same latitude as the Aberarder wind farm.
- The lake at the bottom of the map, to the South-East of Ford Augustus, is the Glendoe Reservoir, that powers the Glendoe hydroelectric scheme.
There are certainly, a lot of SSE-owned and/or SSE-controlled assets in the area and I wouldn’t be surprised, if SSE integrated them more closely, or added a few more wind farms.
Why Are SSE Advertising The Start Of Construction?
SSE have been advertising for some time on The Times web site.
As they are not a retail energy company anymore, as they sold their retail business to OVO, the advertising, is probably about spreading a good corporate message and getting their strategy broadcast.
Cloiche Onshore Wind Farm
This document from the Department of Business, Industry and Industrial Strategy lists all the Contracts for Difference Allocation Round 6 results for the supply of zero-carbon electricity.
The largest onshore wind farm in the Allocation Round, is the Cloiche wind farm, which has this web page,which is entitled Onshore Wind Projects , on the SSE Renewables web site.
It is the only project on the page and these two paragraphs describe its location and capacity.
The proposed 29 turbine Cloiche Wind Farm is located on the Glendoe and Garrogie Estates, adjacent to the operational Stronelairg Wind Farm and Glendoe Hydroelectric Scheme and approximately 11 kilometres (km) to the south-east of Fort Augustus in the Great Glen, in the Monadhliath mountain range.
It is anticipated that the wind farm will generate approximately 130.5MW.
This Google Map shows the location.
Between the village of Fort Augustus and the Stronelairg wind farm, lies the Southern end of Loch Ness.
In the South-East corner of the map, there is a large lake, which is shown in more detail in this Google Map.
This is the Glendoe Reservoir for the Glendoe Hydro Scheme, that was built in the early years of this century, by damming the River Tarff.
The dam is clearly visible at the Western end of the Reservoir.
The Glendoe Hydro Scheme was opened in 2009 and has a generation capacity of 106.5 MW.
The planning and building of the scheme are described in this Wikipedia entry and the entry is well worth a read.
Stronelairg Wind Farm
Stronelairg wind farm, Cloiche wind farm and the Glendoe Hydro Scheme are all projects, that were or will be developed by SSE Renewables.
Stronelairg wind farm has 66 turbines and a total installed capacity of 228 MW.
It has a web page on the SSE Renewables web site.
These two paragraphs describe the location of Stronelairg wind farm.
Stronelairg sits at an elevation of around 600m above sea level in the Moadhliath Mountain range making it one of our windiest wind farms.
It sits within a natural bowl on a plateau, set well back from Loch Ness meaning that no turbines are visible from the main tourist routes in the area. Stronelairg is also located adjacent to our 100MW Glendoe hydro scheme and so the construction teams were able to use the hydro infrastructure as do our operational teams now.
Stronelairg wind farm appears tobe a powerful asset, hidden in the mountains.
Three Co-located Assets
As Cloche wind farm, will be adjacent to the operational Stronelairg Wind Farm and Glendoe Hydroelectric Scheme, these three energy producing assets, will be close together.
- Cloiche wind farm – 130.5 MW
- Stronelairg wind farm – 228 MW
- Glendoe Hydroelectric Scheme – 106.5 MW
Note.
- This is a total power of 465 MW.
- This would be equivalent to a medium-sized gas-fired power station.
- All three assets could use the same grid grid connection and other facilities.
It could be considered a 358.5 MW wind farm, backed by a 106.5 MW hydro power station.
When there is a shortage of wind, the Glendoe Hydroelectric Scheme could step in, if required.
Conclusion
Onshore wind, backed up by hydroelectric schemes would appear to be a good way to create reliable hybrid power stations.
Do any other schemes in Allocation Round 6, involve combining onshore wind with existing hydro schemes?
Fifth Hydro Project Proposed At Loch Ness
The title of this post. is the same as that of this article on the BBC.
This is the sub-heading.
The local community is to be asked for its views next week on plans for a new hydro-electric scheme at Loch Ness.
These three paragraphs introduce the new scheme.
Glen Earrach Energy’s, external (GEE) pumped storage hydro project is the fifth hydro scheme proposed for the Loch Ness area.
The company said its project on Balmacaan Estate would create clean energy while protecting the environment, and create 600 on-site jobs.
But concerns have been raised about the number of planned schemes, with Ness District Salmon Fishery Board worried about the effect on wild fish.
The project has a web site, which has a section entitled About The Project, where this is said.
Glen Earrach Energy, which means “Valley of Spring” in Gaelic, stands at the forefront of energy innovation. The Pumped Storage Hydro (PSH) project, located at Balmacaan Estate, Scotland, is a critical component for achieving a net-zero grid by 2030.
The project prioritises environmental preservation and biodiversity enhancement while achieving outstanding efficiency in energy storage and generation.
This ensures a healthier and more sustainable balance between harnessing natural energy resources and the maintenance and reinforcement of the surrounding ecosystem.
Note.
- It doesn’t say, but it looks like Glen Earrach Energy aim to complete the project by 2030.
- Glen Earrach Energy also seem to be playing a strong environmental card.
But nothing is said about the size of the project.
This article on Business Insider, which is entitled £3 billion Loch Ness Hydro Project Plans Unveiled, does give some details.
- Potential Investment – More than £2 billion
- Output – 2 GW
- Storage Capacity – 30 GWh
- The project could create at least 600 on-site construction jobs in Scotland over a six-year period, plus many thousands more locally in the supply chain.
It is larger, than SSE’s flagship Coire Glas pumped storage hydroelectric power station, which is planned to be a 1.5 GW/30 GWh station, at the other end of the Great Glen.
I have some thoughts.
The Existing Hydro Schemes On Loch Ness
According to the BBC article, there are two existing hydro schemes on Loch Ness.
- Foyers is described on this web site and is a reasonably modern 305 MW/6.3 GWh pumped storage hydroelectric power station, that was built by SSE Renewables in the last fifty years.
- Glendoe is described on this web site and is a modern 106.5 MW conventional hydroelectric power station, that was built by SSE Renewables in the last twenty years.
Foyers and Glendoe may not be the biggest hydroelectric power stations, but they’re up there in size with most solar and onshore wind farms. Perhaps we should look for sites to develop 100 MW hydroelectric power stations?
The Proposed Hydro Schemes On Loch Ness
According to the BBC article, there are four proposed hydro schemes on Loch Ness.
- Coire Glas is described on this web site and will be a 1.5GW/30 GWh pumped storage hydroelectric power station, that is being developed by SSE Renewables.
- Fearna is described on this web site and will be a 1.8GW/37 GWh pumped storage hydroelectric power station, that is being developed by Gilkes Energy.
- Loch Kemp is described on this web site and will be a 600MW/9 GWh pumped storage hydroelectric power station, that is being developed by Statera.
- Loch Na Cathrach is described on this web site and will be a 450MW/2.8 GWh pumped storage hydroelectric power station, that is being developed by Statktaft.
In addition there is, there is the recently announced Glen Earrach.
- Glen Earrach is described on this web site and will be a 2GW/30 GWh pumped storage hydroelectric power station, that is being developed by Glen Earrach Energy.
Note.
- The total power of the seven pumped storage hydroelectric power stations is 4.76 GW.
- The total storage capacity is 85.1 GWh.
The storage capacity is enough to run all turbines flat out for nearly five hours.
Could Glendoe Be Updated To Pumped Storage?
The Wikipedia entry for the Glendoe Hydro Scheme mentions pumped storage several times.
In Glendoe Hydro Power Station, I estimate that a Glendoe pumped storage scheme could be perhaps 50 % bigger than the system at Foyers.
I feel that if more storage capacity is needed in the Highlands, then Glendoe could be converted to pumped storage.
Loch Kemp Pumped Hydro
Loch Kemp Is a smaller loch just to the East of Loch Ness.
This Google Map shows Loch Kemp in relation to Loch Ness.
Note.
- Loch Ness is in the North West corner of the map, with partial cloud cover.
- Loch Kemp is in the South East corner of the map.
The proposed Loch Kemp pumped hydro scheme will have these characteristics.
- Loch Kemp will be the upper reservoir.
- Loch Ness will be the lower reservoir.
- The power station will be on the banks of Loch Ness.
- The power station will be designed to fit into the environment.
- Eight dams will be built to enlarge Loch Kemp.
- Trees will be planted.
- Output of the power station will be 300 MW
- Available storage could be 9 GWh.
The station will have almost as much storage capacity as Electric Mountain, but that power station has an output of 1.8 GW.
In Glendoe Hydro Power Station, I wrote about the Glendoe Hydro Scheme.
- It is a 100 MW hydroelectric power station
- It has the highest head at 600 metres of any power station in the UK.
- It opened in 2009, making it one of the newest hydroelectric power stations in the UK.
- The actual power station is in an underground cavern.
- The dam and power station have been designed to be hidden from view.
This Google Map shows the location of Glendoe power station to the South of Loch Kemp.
Note.
- The red arrow indicates Loch Kemp.
- The loch in the South East corner is the reservoir that feeds Glendoe power station.
- Fort Augustus is at the Southern end of Loch Ness.
This Google Map shows the Northern end of Loch Ness.
Note.
- The red arrow indicates Loch Kemp.
- Foyers, which is a short distance to the North West, is the site of the Foyers pumped hydro scheme. I wrote about this scheme in The Development Of The Foyers Pumped Storage Scheme.
- Loch Duntelchaig, in the North-East corner of the map, is being used as the upper reservoir of the Red John pumped hydro scheme. I wrote about this project in Red John Pumped Storage Hydro Project.
On the East side of Loch Ness there seems to be four substantial hydro-electric schemes.
In order from South to North these schemes are.
Glendoe
Glendoe is a modern 100 MW hydroelectric power station, that opened in 2009.
In Glendoe Hydro Power Station, I felt it might be possible to expand Glendoe into a pumped hydro scheme, with upwards of 10 GWh of storage.
Loch Kemp
Loch Kemp is a proposed 300 MW/9 GWh pumped hydro storage station.
Foyers
Foyers is an existing 300 MW/10 GWh pumped hydro storage station.
Red John
Red John is a proposed 450 MW/2.8 GWh pumped hydro storage station, which has received planning permission.
These four power stations could be summarised as follows.
- Glendoe – 100 MW/10 GWh
- Loch Kemp – 300 MW/9 GWh
- Foyers – 300 MW/10 GWh
- Red John – 450 MW/2.8 GWh
Note.
- Totals are 1150 MW and 31.8 GWh
- Foyers was converted from a conventional hydroelectric power station, that was opened in 1895 to a pumped hydro storage station.
- If Foyers can be converted, why can’t Glendoe.
A very large pumped storage station of four separate units, can be built on the East side of Loch Ness.
Conclusion
This is only on the East side of Loch Ness, so if the West side can be similarly developed, Loch Ness could be developed into a real Loch Ness monster with over 60 GWh of pumped hydro storage.
Glendoe Hydro Power Station
When I think of hydro-electric power stations in the UK, I generally, think that most of the hydro-electric power stations were built years ago by organisations like the North of Scotland Hydroelectric Board. These power stations were one of the staples of the Meccano Magazine, of which I was a long-term subscriber in the 1950s.
But Glendoe hydro-electric power station is relatively new having been opened in 2009. At only 100 MW, the power-station may not be large in comparison to others around the world, but it does show what can be built in the Highlands of Scotland.
This Google Map shows the layout of the power station.
Note.
- The red arrow indicates the location of Glencoe power station, which is underground.
- To the North of the power station, is the Southern end of Loch Ness.
- In the South-Eastern corner of the map there is the lake from which the power station draws its water.
- The dam is at the Western end of the lake.
According to this article on Power Technology, the project cost £160 million.
This extract from a page on the SSE Renewables web site, describes the layout of the tunnels and the operation of the power station.
Engineers began planning the Glendoe project as far back as October 2001. Formal construction work at the site started over four years later, in January 2006. It involved constructing a 960 metre-wide dam on the River Tarff to create a new reservoir some 600 metres above the power station, giving it the greatest head of any hydro electric power station in the UK.
An 8.6 kilometre tunnel connects the reservoir to the power station that is built 250 metres below ground level, about two kilometres from the banks of Loch Ness. Although some of the tunnel was created using traditional drill and blast techniques that would have been familiar to the Tunnel Tigers of the last century, much of its length was bored out using a massive tunnelling machine named Eliza Jane by local schoolchildren.
The SSE page also describes the working and living conditions of those who built the scheme.
Most lived in specially constructed camps high in the hills above Loch Ness, braving brutal weather conditions in winter, and the fearsome Scottish midges in the summer.
The SSE page also gives the main use of the power station.
Today, the main operating feature of Glendoe is its ability to react quickly to changing demand for electricity, being able to reach full output in just 90 seconds.
So when there is an important football or rugby match on the television, it is ideal to supply the surge of electricity, when everybody puts on the kettle at half time.
Could This Power Station Have A Pumped Storage System Added?
Consider.
- There is a large lake six hundred metres above the power station.
- Loch Ness is a large source of water at the bottom of the mountain.
- Every tonne or cubic metre of water pumped into the upper lake would store 1.63 kWh of electricity.
- The world’s and the UK’s tunneling engineers are getting better and more ambitious.
- When this power station was built in the early years of this century, there wasn’t the large amount of wind turbines in Scotland, that there are now.
I suspect, it’s an idea that’s been looked at, but the costs or the distance to pump the water might kill it.
If a second project was the same size as the first, it would cost £210 million based on inflation.
But.
- It wouldn’t need another dam or a substation to connect to the National Grid.
- There would probably be a need for extra excavation at the power station to put in the pumps.
- I suspect it would need an extra tunnel to get the water uphill.
- One tunneling engineer told me, as with sex, digging a second tunnel is easier.
The main benefit, would be that it would be hidden infrastructure.
As to the energy storage capacity, I estimate from maps that the top reservoir at Glendoe is about half the size of Loch Mohr at Foyers power station, but the head is 600 metres as against 197 metres. As Foyers can store 10 GWh, it looks to me, that Glendoe could store around 15 GWh.
Also, as Glendoe power station was designed and built after the successful conversion of Foyers to a pumped storage station, I wouldn’t be surprised to find that Glendoe was designed, so that the station could be converted to pumped storage at a later date.
Conclusion
This scheme will be seriously looked at for extension with a pumped storage facility.
The Anonymous Widower 