ent, winning the ‘International Landmark’ prize in 2002 from the American Society of Civil Engineers. Other recipients of the prize in the past have included the Eiffel Tower, San Francisco’s Golden Gate Bridge and the Panama Canal. The power station has also won an ‘International Milestone’ award that was presented by the Institute of Electrical & Electronic Engineers.
As well as this, other projects around the world looked to Ardnacrusha when building their own power stations – it was a reference site for the Tennessee Valley project in the US.
Ardnacrusha - first build
But can we look to Ardnacrusha as a symbol of forward thinking for the Ireland of today in terms of harnessing more of the country’s natural resources, such as wind, to create a cleaner energy supply?
Back in late July, the current Taoiseach, Enda Kenny, TD, was at Ardnacrusha to mark the 85th anniversary of the setting up of ESB.
Another former taoiseach, Liam Cosgrave, was also at Ardnacrusha on that day. It was significant as he was at the official opening of the station by his father WT Cosgrave on 29 July 1929 as a young boy.
Kenny spoke this July about how Ardnacrusha remains a “powerful symbol of bold thinking” as new reforms are introduced in the State-owned energy sector.
So where is Ardnacrusha at right now in terms of Ireland’s electricity supply? According to ESB, the station can provide a rapidly available source of electricity during hours of peak demand and can also act as a back up, such as when another plant breaks down.
Catherine Halpin is plant manager at Ardnacrusha, which now employs 53 people. She said that in the Nineties, a big overhaul was carried out at the station to maximise its output.
“This means the station now has the capacity to achieve up to 92 megawatts of electricity instead of the previous maximum 85/86 megawatt output at any point in tim," she explained.
To put that in perspective, that’s enough electricity to power a town like Ennis in Co Clare each day, depending on the water. That’s our maximum output.”
According to Halpin, Ardnacrusha, when it provides intermittent electricity, powers 2pc of Ireland's current maximum requirements. And when it first started running all those years ago the station provided 96pc of Ireland's electricity requirements.
“We run depending on the lake levels in Lough Derg, as well as the predicted rainfall into the lake. We monitor the meteorological conditions daily.”
Ardnacrusha - second build
But what can Ireland take from Ardnacrusha now, especially as the Government looks to integrate more renewable into the electricity grid? In June, for instance, Energy Minister Pat Rabbitte, TD, met with the UK’s Energy Minister Charles Hendry, MP, in London, where the duo agreed to develop a formal memorandum of understanding (MoU) on renewable energy trading between the two countries.
Said Halpin: “The massive risk that was taken with Ardnacrusha is an example of breaking into new technologies and how you have to take a risk in order to break new ground.”
Right now, ESB has four main hydro stations in Ireland and Halpin argued that it is tapping into 70pc of the estimated available hydro resources in the country.
“Ardnacrusha has paid off and ESB would like to think of it as an example of how Ireland can harness its clean energy resources in the future, especially around wind, wave and tidal,” she said.