View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
  1. Project
21 January 2022

Dunmaglass Wind Farm, Inverness, Scotland, UK

Dunmaglass wind farm, which was fully commissioned in December 2017, is powered by 33 GE 2.85-100 wind turbines.
Dunmaglass wind farm is located in Dunmaglass Estate in Inverness, Scotland. Credit: SSE.
Dunmaglass features 33 wind turbines rated 2.85MW each. Credit: SSE.
The wind turbines were designed specifically for the project by GE. Credit: SSE.
Dunmaglass is the highest wind farm ever built by SSE. Credit: SSE.

Developed by SSE Renewables, Dunmaglass is a 94.05MW wind farm situated 25km south of the city of Inverness, Scotland. At 700m above sea level, it is the highest wind farm ever constructed by the Scottish energy company.

Free Report
img

Wind Power Market seeing increased risk and disruption

The wind power market has grown at a CAGR of 14% between 2010 and 2021 to reach 830 GW by end of 2021. This has largely been possible due to favourable government policies that have provided incentives to the sector. This has led to an increase in the share of wind in the capacity mix, going from a miniscule 4% in 2010 to 10% in 2021. This is further set to rise to 15% by 2030. However, the recent commodity price increase has hit the sector hard, increasing risks for wind turbine manufacturers and project developers, and the Russia-Ukraine crisis has caused further price increase and supply chain disruption. In light of this, GlobalData has identified which countries are expected to add the majority of wind power capacity out to 2030. Get ahead and download this whitepaper for more details on the current state of the Wind Power Market.
by GlobalData
Enter your details here to receive your free Report.

The Scottish Government approved the wind farm in December 2010. SSE acquired the 33-turbine project from Renewable Energy Systems Group (RES) in May 2013.

Construction of the wind farm was initiated in 2014, and the turbines were delivered in May 2016. The final turbine was installed at the site in October 2016, and full-scale operations started in December 2017. The total investment for the project was £200m ($267.7m).

SSE Renewables reached an agreement with Greencoat UK Wind, a renewable infrastructure investment fund, for the sale of a 49.9% stake in its Dunmaglass and Stronelairg wind farms in a deal worth £635m ($833.2m) in February 2019. The deal was completed by the end of March the same year.

Dunmaglass wind farm make-up

GE was contracted to supply 33 of its 2.85-100 wind turbines with 70m-high towers for the Dunmaglass project. The company custom-designed and developed the turbines for the project to meet the strict constraints imposed by the local authorities, which required a maximum blade tip height of 120m. Each turbine is up to 120m high to the tip of the blade, whereas the hub height is 80m.

Other components of the project include two 80m-high anemometry masts, 12.5km of upgraded roads, 20km of new access roads, a new substation, on-site borrow pits and a construction camp.

Power transmission system for the Dunmaglass wind farm

A new substation known as Farigaig substation was built outside the farm, near Torness, Inverness. The 275/132kV substation comprises a control building, two super-grid transformers and two steel overhead line towers.

The substation connects the wind farm to the national grid for the distribution of the generated power. Scottish Hydro Electric Transmission established a new electrical connection using both overhead and underground cables to establish the connection.

A section of the overhead trident wood poles from the Farigaig substation was connected to a new terminal pole located 1.5km north of the junction. An underground cable section was also built between the new terminal pole and Farigaig substation to avoid unnecessary overhead lines near the substation.

Contractors involved

RJ McLeod, a civil contractor based in Highland, was awarded two civil work contracts including a £5.5m ($8.85m) enabling works contract and £16m ($25.74m) civil engineering works contract.

The scope of the enabling works included the construction of two temporary timber deck bridges, main works site compound, new platform for the on-site substation, upgrading of the existing track and development of the on-site rock borrow pit.

The main civil works contract included the construction of bases for the 33 turbines and crane hardstandings as well as related cabling and drainage works.

Ground engineering and sustainable solutions provider Aarsleff was responsible for the installation of 140 piles for four wind turbines.

Dunmaglass wind project benefits

The wind project was expected to help the Scottish Government’s goal of generating sufficient renewable energy to meet 100% of gross annual consumption by 2020. It produces clean, carbon-free electricity sufficient to cater to the needs of more than 40,000 households a year.

The project is also designed to help reduce green gas emissions by displacing between 80,000t and 180,000t of carbon dioxide emissions a year.

Over its lifespan, the wind farm will contribute £4m ($5.35m) towards a community fund, which will be spent on local community projects.

Topics in this article:
NEWSLETTER Sign up Tick the boxes of the newsletters you would like to receive. The top stories of the day delivered to you every weekday. A weekly roundup of the latest news and analysis, sent every Wednesday. The power industry's most comprehensive news and information delivered every month.
I consent to GlobalData UK Limited collecting my details provided via this form in accordance with the Privacy Policy
SUBSCRIBED

THANK YOU

Thank you for subscribing to Power Technology