Awaiting decisionEnergy

Derrynagall Or Ballydaly, Tullamore, Co. Offaly

A 10-year permission for a revised Battery Energy Storage System (BESS) facility and electrical compound.

2560681 · Offaly County Council · Lodged 22 December 2025

Reference: 2560681
Authority: Offaly County Council
Register status: Invalid or incomplete
Type: PERMISSION
Received: 22 December 2025

Summary

AI-generated

The development on a 4.9-hectare site consists of a revised design for a permitted Battery Energy Storage System (BESS) incorporating 28 to 112 battery containers. It also includes an associated electrical compound with a high-voltage yard, buildings, an 18m lightning mast, and access track modifications.

Energybattery storageenergygrid

Floor area: 121 m²

Generated from the description above by an AI model and may contain mistakes. The council’s description is the authoritative record.

Official record

Development description

A 10 year planning permission for development at derrynagall or ballydaly, tullamore, co. Offaly, on a site of approximately 4.9 hectares. The development will consist of
A revised site design for a battery energy storage system facility permitted under ref no. 24/60002, incorporating between 28 no. And 112 no. Battery containers with a difference in height of between 4m and 5.5m . Hvac units, transformers, inverters, underground cabling and associated control rooms will also be provided
An associated electrical compound comprising : o 1 no. A high voltage electrical yard; o 1 no. Operational and welfare building (29.7 sq m); o 1 no. Storage building (91.0 sq m); o an 18m high agl lightening protection mast; and o an auxiliary power supply, transformer, circuit breaker, disconnector, earth switch and ancillary grid equipment
Access will be provided using an existing access track off the l1024 which will be widened on a temporary basis to allow for the delivery of abnormal loads during the construction stage. A new secondary access track connecting to the l1024 will also be provided
All ancillary site development works and infrastructure necessary to facilitate the development including the provision of a temporary construction compound, palisade fencing, landscaping and earth bunding, cctv security monitoring system, surface water drainage, potable water supply, lighting and signage
Fire safety provisions which will include 2 no. Fire water storage tanks; and
General enabling works including boundary treatment . Certain details of the proposed development are unconfirmed in the planning application, and an opinion on unconfirmed details from offaly county council pursuant to section 32h(1) of the planning and development act 2000 (as amended) accompanies this planning application. The details unconfirmed in this application are battery height and number of battery containers. The range of parameters under which the battery storage will fall are specified on this site notice and in the design flexibility opinion that accompanies this application

Key dates

Timeline

Application received22 December 2025

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