Case Studies

Whether you're planning an energy efficiency upgrade or researching the benefits of energy efficiency, our case studies can show you how energy efficiency projects have been completed.

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Team at Kilsaran being present with a plaque for EXEED Certification
EXEED

Design-led energy performance optimisation at Kilsaran Asphalt Plant, Tullamore

Through SEAI’s EXEED programme, Kilsaran achieved verified energy and carbon savings at its Tullamore Asphalt production facility.

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Man standing outside of his house
Home Energy Upgrades

Kildare homeowner cuts his energy bills by almost 50%

Thomas chose the SEAI One Stop Shop grant to help bring his home from a BER C to BER A1.

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Three men walking with Markree Castle Hotel in the background.
Business & Industry
Support Scheme for Renewable Heat

A 17th century castle brings its energy efficiency into the 21st century

Renewable heat at the heart of a heritage estate. A 350kW biomass boiler now supplies 80% of Markree Castle’s thermal energy, transforming comfort and cutting costs.

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Roadstone truck at Belgard plant
Business & Industry
Featured
Large Industry Energy Network
EXEED

Roadstone blacktop optimisation: designing for energy efficiency and carbon reduction with EXEED

Through SEAI’s EXEED Certified Energy Efficient Design approach, Roadstone optimised its blacktop production process, reducing energy use and emissions while boosting operational performance across its asphalt plants.

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Erris SEC
Communities

From master plan to implementation: co-creating community-led energy solutions for Erris

Postgrad students from Germany worked with Erris SEC to explore renewable energy options within the community.

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Picture of home featured in case study
Energy Research

Testing flexibility of renewable energy systems based on price

The aim of this project is to control the power flowing into and out of a home through a single, remotely operated smart platform.

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Solar panels on a farm building in Dingle, Co. Kerry
Communities

West Kerry Dairy Farmers SEC – Ireland’s first sectoral Sustainable Energy Community

A farmer-led Sustainable Energy Community on the Dingle Peninsula is cutting energy costs, installing solar power, building community cohesion and reshaping how dairy farming engages with climate action.

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Heat pumps installed at BOI buildings
Business & Industry
Large Industry Energy Network

Bank of Ireland's decarbonisation journey

Bank of Ireland IT centre reduces its reliance on fossil fuels contributing to BOI’s 49.3% SBTi Carbon reduction target.

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SE Systems wins SEAI Residential Energy Upgrades Award
Home Energy Upgrades

SE Systems won the SEAI ‘Residential Upgrades’ Energy award

SE Systems, Winner at the 2025 SEAI Energy Awards, transformed the comfort for residents living at Douglas Lions Club, Co. Cork.

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Wexford Town SEC
Communities

Wexford Town SEC: Driving a Just Transition Through Community Action

A passionate volunteer group in Wexford Town is tackling building fabric issues while reducing fossil fuel use in the community.

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  1. kilmurry-ibrickane
    Communities

    Kilmurry Ibrickane GAA pitch receives lighting upgrade

    A new lighting upgrade at the County Clare club enabled members to use the pitch year-round. .

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  2. Glinsk-4
    Communities

    Glinsk Case Study

    Glinsk Sustainable Energy Community (SEC) is making significant strides in promoting sustainable energy practices and transforming their rural community in Co. Galway.

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  3. Youghal-Energy-Info-Hub
    Communities

    Youghal Blue & Green Community Network: Leading the Charge for Sustainable Energy

    Youghal Blue & Green Community Network pioneer significant sustainable energy initiatives, making strides in energy efficiency and community engagement.

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  4. Kilanerin-Community-Centre
    Communities

    Kilanerin Community Centre goes solar

    A Sustainable Energy Community in Co. Wexford opted for Solar PV to help reduce energy bills at their community centre.

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  5. Greg-Heylin-OSS-customer
    Featured
    Home Energy Upgrades

    Dublin house achieves A1 BER

    Greg's 1950s end-of-terrace house on the south side of Dublin was transformed from a BER D2 to A1 after his home energy upgrade.

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  6. KPFA-Solar-Refurb-Hawthorn1
    Communities

    Kerry Parents and Friends Association upgraded two homes

    The Killarney based charity insulated two houses to give residents more comfort and reduce energy costs.

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  7. Ray-MacSharry-park
    Communities

    Ray MacSharry Park upgrades pitch lighting

    The football venue availed of SEAI community grant to revamp lighting.

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  8. St-Mary_s-Julianstown
    Communities

    St. Mary's Church invested in energy upgrades to improve comfort for parishioners

    The church in Julianstown, Co. Meath, decided to upgrade its windows, doors and ventilation

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  9. the-helix-dcu
    Communities

    Dublin City University's Helix Theatre improves its energy efficiency

    The busy venue wanted to address its energy performace as per the public sector targets for 2030.

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  10. Sandford-Park-School
    Communities

    Sandford Park School gets energy efficiency upgrades

    The Co. Dublin school needed to improve its environment for both students and staff.

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  11. BOYNE-FISHERMENS-RESCUE-RECOVERY
    Communities

    Boyne Fishermens Rescue and Recovery Service save on energy costs for boathouse

    The rescue and recovery service wanted to reduce their energy bills to allow them more budget to fuel the boats.

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  12. Pauls-home-resized
    Home Energy Upgrades

    1970s dormer bungalow upgraded to a BER A2

    Kildare family create their dream home transforming their
    uninsulated bungalow into an A-rated airtight house.

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  13. OPW-Trim-1
    Public Sector

    Pathfinder - OPW Head Office, Trim

    As part of the OPW's commitment to reducing energy consumption and waste, a large solar photovoltaic (PV) array was installed at the OPW Head Office in Trim.

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  14. St-Columbas-Glenties
    Public Sector

    Pathfinder - St Columba's Comprehensive School, Glenties, Co. Donegal

    The objective of the project was to upgrade the building energy rating (BER) from a C3 to a targeted B1, while reducing carbon emissions by a minimum of 51%

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  15. St-Marys-Hospital
    Public Sector

    Pathfinder - St Mary's Hospital, Phoenix Park

    A suite of energy saving recommendations associated with the control and operation of the heating system at St. Mary's Hospital were identified and implemented.

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  16. St-Dympnas-Hospital
    Public Sector

    Pathfinder - St. Dympna's Hospital, Carlow

    The upgrade works centred around the replacement of two end-of-life boilers, which supplied heat to the district heating network.

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