A new solar project at County Hall in Dún Laoghaire is set to deliver cleaner energy, lower operating costs and significant carbon savings for Dún Laoghaire-Rathdown County Council. The installation is part of a wider programme designed to improve energy efficiency across public buildings.
Solar investment strengthens Dublin’s climate action
The 100 kW solar photovoltaic system has now been installed on the roof of County Hall. By producing electricity on site, the council expects to reduce its reliance on power from the national grid while supporting its long-term decarbonisation plans.
County Hall is one of the council’s main administrative buildings and has considerable energy needs throughout the year. Using locally generated renewable power for everyday operations should help improve the building’s environmental performance and create long-term financial savings.
Expected annual benefits
- Approximately 89,000 kWh of renewable electricity generated annually
- An estimated reduction of 40 tonnes of carbon dioxide emissions each year
- Lower dependence on grid-supplied electricity
- Long-term energy cost savings
- Real-time monitoring of energy generation and environmental performance
The scale of the expected output is equivalent to the annual electricity use of about 20 average Irish homes. A monitoring dashboard will allow the council’s Facilities Management team to assess system performance, electricity generation and carbon reductions over time.
Local government leadership on renewable energy
Cathaoirleach Cllr Barry Saul welcomed the project as a practical example of climate action delivering both environmental and economic value. Chief Executive Frank Curran also said the installation showed how sustainability could be incorporated into the daily operation of council services and buildings.
The County Hall project forms part of a broader programme involving energy-efficiency upgrades, renewable-energy installations and other decarbonisation measures across the council’s property portfolio. These initiatives are intended to reduce energy consumption and support a more climate-resilient Dún Laoghaire-Rathdown.
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What the project means for Dublin
Public buildings can play an important role in Ireland’s transition to cleaner energy. Projects such as this one demonstrate how councils can use their own estates to reduce emissions, control energy costs and raise awareness of practical climate solutions.
The installation may also provide useful performance data for future renewable-energy schemes. Monitoring actual generation and savings can help inform decisions about solar power, building upgrades and energy management across other public facilities.
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Frequently asked questions
How large is the new solar installation?
The County Hall system has a capacity of 100 kW.
How much electricity will it generate?
The council expects the installation to produce approximately 89,000 kWh of clean electricity each year.
How much carbon will it save?
The projected reduction is approximately 40 tonnes of CO₂ annually.
The new solar installation at County Hall is a clear example of Dublin climate action moving from policy to delivery. Its strongest takeaway is simple: renewable energy in public buildings can reduce emissions while creating lasting operational value for local communities.

