Mynydd y Gwair Wind Farm

Wind energy from south Wales

Construction of innogy’s Mynydd y Gwair Wind Farm set to start

Mynydd y Gwair onshore wind farm is now under construction in South Wales, 15 km north of Swansea. Once operational, the 16 turbine project will have an installed capacity of up to 33.6MW. The project is expected to be a significant investment and could create up to 104 equivalent full time jobs on average during each year of its construction and deliver £8.5 million to the local economies of South and West Wales2.

Information about the construction of the project will be exchanged at Community Liaison Group Meetings and also made available on this web page and on our Mynydd y Gwair Wind Farm e-newsletter. We are keen to keep people up to date on our activities. If you would like to sign up to receive project newsletters about Mynydd y Gwair e-newsletter, please email us directly.

Community Investment

Working with communities

Once fully operational, Mynydd y Gwair Wind Farm will bring with it community funding of £240,000 per annum over the operational lifetime of the wind farm, likely to be up to 25 years.
This flexible funding has the potential to significantly benefit communities both very local to the project and more widely across Swansea.

Proposals for the Community Fund

In 2014 innogy consulted on our proposals for the fund with some key local stakeholders. We also commissioned Swansea Council for Voluntary Service (SCVS) to undertake a more detailed consultation exercise with communities within our proposed area of benefit for the local fund. The full SCVS report is available here.

You can read our full proposals, plus highlights from the consultation, along with more information about our next steps in developing the fund here:

Download Community Fund Structure Document
Download this document in Welsh here

Community Fund Administration – Procurement Process

Several organisations have tendered for the contract to administer the community fund in the Swansea area.  For more information on the procurement process please click here:

Download Mynydd y Gwair Wind Farm Community Fund
Download Mynydd y Gwair Wind Farm Community Fund Admin Contract - Indicative Procurement Timetable

Once the contract has been placed this page will be updated with more information.

Contact us

If you have any further questions for our Community Investment team please email

For more information about our community investment programme please visit our Community Investment pages.

Project name Mynydd y Gwair Wind Farm
Number of turbines 16
Projected capacity up to 33.6MW
Height of turbines up to 127metres at the highest point
Non technical summary of the project Download

Construction Update

Project Manager, Tim James, will post regular updates on the construction of Mynydd y Gwair Wind Farm here.

Construction Project Manager’s Blog

Welcome to my Blog.  During the construction of Mynydd y Gwair wind farm I will regularly update my blog to outline what has been happening on site, any upcoming events and share some progress photographs.

Mynydd y Gwair Wind Farm under construction
Mynydd y Gwair Wind Farm under construction


The works to widen Heol Glyn Dyfal have been completed and the road is now open to traffic.  There will be some minor reinstatement works to undertake over the coming weeks but these will not require any further road closures.

We are also working on Heol y Barna between the entrance to A1K9 and 5 Roads Junction.  These works have involved a complete reconstruction of the carriageway, they are progressing well and it is planned to complete the surfacing of this section by the end of July.

Dawnus have also begun works at 5 Roads Junction, so that we can keep the junction open they have constructed a temporary road for use whilst the works are ongoing.

The road closure on Heol y Barna  (between 5 Roads and Heol Glyn Dyfal) was been put in place allowing us to commence the final section of widening.  It is anticipated that these works will take twelve weeks.

Dawnus are working with the local community to minimise the disruption whilst these works are ongoing.  All businesses within or adjacent to the closures are open as usual and can be accessed in accordance with the posted signs.

Dawnus and ourselves continue to liaise closely with the City and County of Swansea Council Highways Department regarding these works.

We would like to thank everyone for the patience and understanding during this period.

I have included details of the closures and their associated signed diversion routes below 

The closures are as follows:

Upcoming Works

Following the completion of the works on Heol y Barna (between A1K9 and 5 Roads Junction) Dawnus will progress the remaining works at the Bolgoed Road Entrance.

We will also be working on 5 Roads Junction and Heol y Barna over the coming works.

Main Site

We look to start the works on the main site during October this year, to that end we have now placed the contracts for these elements of the project.  Following a competitive tender process, Farrans Construction have been appointed as our civil contractor.  This contract is worth in excess of £10m, of which it is anticipated that 74% will be spent within 100km of the site and will support 43 local jobs.

We have also placed the contract for the electrical works with Omexom.

Community Liaison Group

As part of the development, innogy has established a Community Liaison Group which has met regularly since November 2016 and will continue to meet regularly throughout the construction period, until the turbines are operational, probably towards the end of 2018.

The Community Liaison Group is an information exchange, giving innogy the opportunity to update members on progress, share construction plans, and providing other representatives with a forum in which to raise questions.

The four community councils most affected by the development have nominated representatives, as have the West Glamorgan Commoners Association, South Wales Police, Dawnus, and the planning and highways departments of Swansea City Council.

The representatives nominated by each community council, and the representative of the West Glamorgan Commoners’ Association, are:


If you want any further information on the Mynydd y Gwair Wind Farm, or have any queries or concerns, or simply want to make a comment, please contact us via:

  • Telephone: 0800 0727604
  • E-mail:
  • Twitter: @innogy_uk 


    (1) Energy predicted to be generated by the proposal is derived using wind speeds monitored in the local area and correlating to a Meteorological Office station providing longer term data. This enables a calculation to be made to estimate the average annual energy production for the site based on 16 turbines each of rated capacity of up to 3MW. The energy capture predicted and hence derived homes equivalent or emissions savings figures may change as further data are gathered. An equivalent home supplied is based on an annual electricity consumption per home of 4700 kWh. This figure is supported by recent domestic electricity consumption data available from The Digest of UK Energy Statistics and household estimates and projections from the UK Statistics Authority.

    (2) The Regeneris report contains research on economic issues associated with the construction and operation of the Mynydd y Gwair Wind Farm. Values are measured as Gross Value Added - a measure of the value of goods and services that an economy produces. During construction, the project could also potentially generate 104 Full Time Equivalent (FTE) jobs each year in Wales. The full Regeneris report is one of the key supporting documents included within the application and the Environmental Statement. The full report is available to download here.

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