ORESS Tonn Nua Offshore Wind Auction
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From: Department of the Environment, Climate and Communications
- Published on: 31 October 2024
- Last updated on: 27 May 2025
Government published the Terms and Conditions of Ireland's second offshore wind auction (Tonn Nua) under the Offshore Renewable Electricity Support Scheme (ORESS) on 31 October 2024. The Terms and Conditions set the framework for a competitive auction to take place in the second half of 2025 to select a single winner of ORESS two-way CFD support for a 900 MW offshore wind farm to be developed in the first site of the South Coast DMAP. Publication of the Terms and Conditions followed a year long process of engagement with stakeholders involving two consultations and several technical workshops.
An updated version of the Terms and Conditions (Ver 1.1) was published on 27 May 2025.
The qualification phase of the Tonn Nua Auction is anticipated to open in Q3 2025, with the bidding phase in Q4 2025.
The Tonn Nua project will contribute 900 MW towards our Climate Action Plan targets of 5 GW installed offshore wind capacity and will save 1.87 million tonnes of CO2 annually over its anticipated 30+ years of operation.
