Tinnycross Battery Storage Project
Tinnycross BESS (formerly known as Thornsberry BESS) is a proposed 120 MW | 240MWh battery storage project to be located in the townlands of Derrynagall and Ballydaly north-east of Tullamore in Co. Offaly, Ireland.
The project was acquired from UK-based renewable energy company Low Carbon in November 2024.
This grid-scale project could power over *115,000 Irish homes for up to two hours at a time.
If approved for final delivery, the project could be operational by the end of the decade and would be expected to provide a boost to the supply chain and job creation in County Offaly and the wider Midlands during delivery.
It would also support the delivery of local authority essential services in Offaly through the payment of development contributions and commercial rates.
Potential capacity
Public Consultation - 8th May 2025
We will be running a public consultation for this project for three weeks, from May 8th. During this time, we hope to hear the views of the local community regarding the project.
Our consultation materials, outlining further detail, will be available to view in-person at St Mary’s Youth and Community Centre in Tullamore on May 8th. Members of the project team will also be in attendance, and we encourage the local community to provide their feedback and views.
All materials on display at our in-person event, and an online feedback form, will also be available here our project website from May 8th until May 29th.
The event is free to attend and gives the local community the chance to learn more about our plans and have any questions they might have answered by our project team.
Location: St Mary’s Youth and Community Centre, Harbour Street, Tullamore, R35 W2K0
Date & Time: May 8th, 2:30pm-8:30pm
Tinnycross newsletter - April 2025
Please click below to download our Tinnycross BESS project newsletter.
Click here to downloadA short film : How does a Battery Energy Storage System (BESS) work?
Contact us
If you have any questions relating to the proposed Thornsberry BESS Project, please contact our Community Liaison Officer:
Email: [email protected]
* Quoted 115,757 homes supplied for 2 hours, based on an 120MW (240MWh) battery against assumed average daytime (08:00-20:00) hourly use of 1.03kWh at a typical home (based on Typical Domestic Annual Consumption, 4,200 kWh per household, Commission for the Regulation of Utilities).