Clonarrow Wind Farm

The proposed project will comprise of up to 4 wind turbines, with a tip height of up to 180m. ​It will have an installed capacity of 22.2 MW, which would generate enough electricity to power 13,000 homes per annum.

Site Location

Clonarrow Area of Interest

Maps are reproduced under Ordnance Survey Ireland Licence No. CYAL50319136 (c) Ordnance Survey Ireland / Government of Ireland

The site is located approximately 2.5km southeast of Daingean and 15km east of Tullamore. It is located in an area that is designated as “Open for consideration” for Wind Energy Development, in the Offaly County Development Plan.

Community Benefit Fund

Regnum is committed to setting up a community benefit package to support the residents living closest to the project. We will collaborate closely with the community to customise this financial support package, placing​ local individuals at the forefront of decision-making regarding its implementation and impact.

Proposed Development

The proposed Development consists of a 10-year planning permission for the construction of a windfarm, including all the associated ancillary development, and for the 35-year operation, including:

  • Erection of 4 wind turbines; The candidate wind turbines for T1, T2 and T4 have a rotor diameter of 150m, a hub height of 105m and a tip height of 180m. The candidate wind turbine for T3 has a rotor diameter of 117m, a hub height of 91.5m and a tip height of 150m;
  • Construction of permanent Turbine Hardstands and Turbine Foundations;
  • Construction of new permanent internal Access Tracks and upgrade of existing internal Access Tracks;
  • Development of an internal site drainage network and sediment control systems;
  • Construction of a permanent 38kV Onsite Substation with surrounding palisade fence 2.6m in height;
  • Installation of battery arrays located within container units (4 no. units) and associated electrical plant for grid stabilisation adjacent to the Onsite Substation building with surrounding palisade fence 2.6m in height;
  • All associated internal underground electrical and communications cabling connecting the wind turbines to the Onsite Substation;
  • All associated site development works including soil excavation, spoil storage and biodiversity enhancement measures;
  • Installation of a meteorological mast (32m in height) for monitoring wind speeds, set in a 5m x 5m reinforced concrete foundation with surrounding paladin fence 2.4m in height;
  • Installation of a Relay Mast (to re-route the Three Ireland radio link between Mount Lucas and Curragh) 19.8m in height including lightning protection rods set in an 8m x 8m reinforced concrete foundation with surrounding paladin fence 2.4m in height with an adjacent outdoor cabinet on a 3m x 2m concrete base;
  • Temporary Road widening and strengthening works at the R402 and L50203 junction to accommodate abnormal load deliveries;
  • Existing bridge on L50203 (ITM 650044E, 727144N) to be permanently upgraded to accommodate abnormal load deliveries;
  • Temporary bridge and temporary local access road to facilitate local traffic while the bridge upgrade works are being carried out;
  • Upgrade of an existing Site entrance located on a private road off the L50203; and
  • Construction of a Temporary Construction Compound with associated temporary site offices, parking areas, security fencing welfare facilities and wastewater holding tank. An additional Temporary Construction Compound will be constructed for the bridge upgrade and temporary bridge works.

Planning Submission

On the 23/05/2025, Clonarrow Windfarm Limited C/o Regnum Renewables Development Limited submitted the application to Offaly County Council. The planning reference number for this application is (2560189) or a link to the planning application on Offaly County Council’s website can be found here. ePlan - Online Planning Details

Request for Further Information

On the 17/07/2025, Offaly County Council issued a ‘Request for Further Information’ (RFI) to Clonarrow Windfarm Limited. On the 28/11/2025 Clonarrow Windfarm Limited C/o Regnum Renewables Development Limited submitted its response to Offaly County Council’s RFI.

Planning Decision

On the 30/01/2026, Offaly County Council granted permission for Clonarrow Wind Farm to build out its development. Within the 4-week appeal period, no submissions were made and on the 12/03/2026 Clonarrow Wind Farm received its final grant from Offaly County Council.

Grid Connection

In May 2026, Clonarrow Wind Farm was listed as part of ESBN’s Electricity Connection Policy-Generation and System Services (ECP-GSS-2) initial batch. This is the national system used to manage applications for new electricity grid connections in Ireland. This means the wind farm has been selected to progress through the process of securing a connection to the electricity network, allowing renewable energy generated at the site to be supplied to homes, businesses and public services.

Metrological Mast (Met Mast)

Clonarrow Area of Interest

On the 23/02/2026, Clonarrow Wind Farm received its final grant of planning for the erection of a temporary 100m met mast. A met mast is being installed to gather detailed wind and weather information at the site. The data collected will support the ongoing development and delivery of the approved wind farm project and help inform future monitoring activities.

At the end of May 2026, construction started on the temporary 100m met mast and finished in early June. The met mast is now operational and is gathering detailed wind and weather information at the site.
that is designated as “Open for consideration” for Wind Energy Development, in the Offaly County Development Plan.

Communications

As the project progresses, any updates or milestones that are achieved will be documented here. If you have any feedback, comments or queries in relation to the project, please do not hesitate to contact us through our dedicated Community Liaison Officer for the project:


Daragh Browne

t: +353 87 487 6422​
e: daragh@regnumrenewables.ie

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