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300 MW battery storage plant proposed at Ballincarroonig, Aghada, Co. Cork

2 July 2026 · Permission.ie Planning Wire · from the Cork County Council planning register · published 31 August 2026

Electricity Supply Board (ESB) lodged plans with Cork County Council on 2 July 2026 for a 300 MW battery storage plant at Ballincarroonig, Aghada.

Key facts

Reference
26/1782
Planning authority
Cork County Council
Location
The townland of Ballincarroonig, Aghada, County Cork, within the wider ESB landholding
Applicant
Electricity Supply Board (ESB)
Received
2 July 2026
Application type
Permission
Site area
4.7 hectares
Stated capacity
300 MW
Status
Invalid - Prepare Letters
Submissions until
5 August 2026 (closed)

In context

It is one of 13 battery storage applications Cork County Council has received in the past twelve months, against 58 nationally. Of the 72 such applications decided by councils in the past three years, 78% were granted.

What happens next

The five-week window for public submissions has closed. The council normally decides within eight weeks of the application being lodged, unless it requests further information, which stops the clock.

The development description, as lodged

Verbatim from the Cork County Council register. This is the source for every figure in the story above.

Electricity Supply Board (ESB) intend to apply for planning permission for the development of the "Aghada LDES" (Aghada Long Duration Energy Storage) project comprising a Battery Energy Storage System (BESS) with a capacity of up to 300 MW on 4.65 Ha of lands located in the townland of Ballincarroonig, Aghada, County Cork, within the wider ESB landholding. The proposed development will consist of a fenced compound containing a BESS compound and Customer HV Compound. Specifically, the BESS compound will feature up to 200 No. 20 ft battery energy storage system (BESS) enclosures and up to 20 No. Medium Voltage (MV) Skids / Twin Inverter Skids and associated bunds. Associated ancillary equipment includes 1 no. MV switchgear building consisting of 2 no. adjoining prefabricated buildings, 1 no. Control Building, 5 no. LV Switchgear Containers, a fire water tank and pumphouse, Operation and Maintenance site offices (O&M portacabin) including welfare facilities, 3 no. spare parts stores (20-40 ft containers), 1 no. backup diesel generator plinth, an underground fire water retention tank, a surface water soakaway, harmonics structure (if required following testing of equipment), all services connections including electrical, potable water and connections to surface water drains, external lighting poles, CCTV, lighting monopole. The proposed Customer HV Compound will comprise Grid Step-up Transformers and associated bunds and fire walls, 5 No. Auxiliary Transformers and associated bunds, associated electrical equipment including current transformers/voltage transformers (CT/VT) Circuit Breakers, Neutral Earth Resistors, Cable Chairs, and Line Earth Disconnects, external lighting poles, CCTV, lightning monopole. The development proposal also includes a new site access road from the existing Aghada station, access gate, palisade fencing to secure both compounds (2.6m high) and all ancillary site clearance and development works including provision of areas of hard standing, internal access roads, laydown area, car parking and connections to site services and networks.

Cite this story

Free to quote, reproduce and republish with attribution (CC BY 4.0). Every figure on this page is traceable to the council record linked above; please link to this page so readers can check it too.

For print or broadcast

Source: Permission.ie analysis of the national planning register, "300 MW battery storage plant proposed at Ballincarroonig, Aghada, Co. Cork", 2 July 2026. https://www.permission.ie/news/cork-county-council/26%2F1782

For the web (with link)
<p>Source: <a href="https://www.permission.ie/news/cork-county-council/26%2F1782">300 MW battery storage plant proposed at Ballincarroonig, Aghada, Co. Cork</a>, Permission.ie analysis of the national planning register, 2 July 2026.</p>
Full application record

Map, site boundary, timeline and nearby applications for 26/1782.

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