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Partnering with Ørsted to deliver the Tonn Nua offshore wind farm

In partnership with Ørsted, we were provisionally awarded the rights to develop the Tonn Nua site off the coast of County Waterford by The Department of Climate, Energy and the Environment (DCEE).

Currently in an early phase of development, once completed the site will span 306 square kilometres with expected capacity output of approximately 900MW, enough energy to power almost one million homes based on the wind prevalence in the area.

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Our Generation Portfolio

Ardnacrusha

Feb 24, 2022, 09:16 AM
Title : Ardnacrusha
Location : Co. Clare
Select a choice : Hydro
Latitude : 52.7066527
Longitude : -8.6143541

Fuel: Water

Capacity: 86MW

Commissioned: 1929 and 1934

Technology: Vertical-Shaft Francis Generators (Units 1, 2 and 3 – 1929) and Kaplan Turbine Generator (Unit 4, 1934)

 

Ardnacrusha has the distinction of being ESB’s first hydro station. It is also Ireland’s largest river hydroelectric scheme and operates on a purpose-built canal connected to the Shannon.

Ardnacrusha was a ground-breaking development in 1929 and unique in that the national grid (110kV) was constructed at the same time. For these reasons, it was a model for large scale electrification schemes worldwide. At the time, the 86 MW capacity was enough to meet the electricity demands of the whole country. Today, Ardnacrusha represents around 2% of our total installed capacity.

Water is delivered to the turbines by four large, cylindrical steel structures known as penstocks. Each penstock is 41m long, 6m in diameter and can deliver around 100 tonnes of water per second.

Developing and acquiring 1.2 GW of solar energy by 2030

Solar is increasingly central to our net zero energy ambitions. We aim to develop and acquire 1.2 GW of solar by 2030 and continue to develop our growing solar energy portfolio, partnering with others to help deliver this.

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More than 25 years of expertise of onshore wind

Since 1998, starting with our 5MW wind farm in Crockahenny in Co Donegal, we’ve built an onshore wind portfolio supplying nearly 850MW of clean energy in Ireland and the UK.

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Growing our battery storage facilities

We are at the forefront of developing battery systems, supporting the decarbonisation of Ireland's electricity system. We currently have more than 300MWs of battery storage capacity in operation in Ireland, making it one of the largest battery portfolios in Europe.

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Our hydrogen ambitions

We believe hydrogen produced from renewable electricity will play a critical role in the decarbonisation of many sectors. We plan to use our existing capabilities and future renewable growth to become a leading player in large scale renewable hydrogen production, thereby enabling renewable electricity, in the form of electrons or green modules, to meet the energy requirements of Ireland’s future zero carbon economy.

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Investing in offshore wind energy

Offshore wind is playing a major role globally in our fight against climate change and our transition to a zero carbon economy.

We have been involved in offshore wind since 2017 with a number of planned projects for Ireland and the UK.

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Our people working in generation

Meet Joe Shinkwin, Onshore Wind Project Director in our Generation and Trading business. Joe shares how the projects he works on not only deliver clean energy but also create a community benefit fund to support local initiatives. At ESB, we’re investing in renewable energy to help reach net zero emissions, and we’re proud of the people making it happen.

Our people working in generation video