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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Two people standing at an IBTS stand holding a sign saying 'Reduce Your Use'
Public Sector

From Red to Green: Reducing Energy Use at the Irish Blood Transfusion Service

The Irish Blood Transfusion Service is implementing a long-term Climate and Sustainability Strategy that seeks to reduce environmental impact while maintaining the safe and reliable provision of critical healthcare services.

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Members of the Corofin SEC standing outside the community centre.
Communities

From Planning to Delivery: How Corofin SEC Turned an Energy Master Plan into Community Action

Corofin Sustainable Energy Community (SEC) turned its Energy Master Plan into real action, securing funding, delivering energy upgrades and bringing the community together around a shared vision for a more sustainable future.

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A group photo taken at a housing estate
Communities
Home Energy Upgrades

Delivering warmer, healthier homes for older residents in Mountmellick

A major retrofit project at Wolfe Tone Court in Mountmellick, Co. Laois has transformed 24 homes for older residents, bringing every dwelling to an A1 rating.

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Two members of Balbriggan SEC working together.
Communities

Balbriggan Sustainable Energy Community working to take community climate action

Balbriggan Sustainable Energy Community (SEC) secured over €60,000 through the Community Climate Action Programme (2024-2025) to support climate action in partnership with other local community groups in Balbriggan.

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Martina standing outside her home with John from SSE Airtricity
Home Energy Upgrades

Semi-D goes from a BER D1 to A2 following a home energy upgrade

Martina is now living in a more comfortable and energy efficient home following multiple energy upgrades managed by an SEAI registered One Stop Shop

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Tyndall-Institute-Building-External
Business & Industry
Featured
EXEED

Tyndall National Institute lowers energy use and carbon emissions by 33% and energy costs by 23%

The energy team used the EXEED IS 399 process to identify significant energy and CO2e savings measures across its campus.

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Mullingar Park Hotel
EXEED
Business & Industry

Optimising hotel energy efficiency at Mullingar Park Hotel

Mullingar Park Hotel’s successful EXEED certified energy transformation delivers energy savings of 665,905 kWh/yr and carbon reduction 138 tCO2/yr

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Three people pose with EXEED certification
EXEED
Business & Industry

Shannon Springs Hotel’s EXEED certified achievements of 48% savings against the baseline

A landmark EXEED certified project delivering energy savings of 510,000 kWh/yr, and carbon emission reductions of 117 tonnes of CO2/yr, and enhanced hotel operational performance.

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A group of people outside Maynooth University Ireland
Business & Industry
EXEED

Designing a low-carbon academic building at Maynooth University

Applying EXEED at the design stage delivered 29.5% measurable energy and carbon savings.

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Team at Kilsaran being present with a plaque for EXEED Certification
EXEED
Business & Industry

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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  1. Kenmare Community Hospital
    Public Sector

    HSE improves energy efficiency in County Kerry facilities

    The HSE Capital and Estates South West reviewed its energy use in two County Kerry facilities. The aim was to make the buildings more efficient, reduce energy bills and cut down on carbon emissions.

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  2. 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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  3. 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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  4. 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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  5. Margaret Murphy, homeowner, and Ken Lee from One Stop Shop Leetherm.
    Home Energy Upgrades

    Kilkenny bungalow gets home energy upgrade

    Homeowner Margaret went the One Stop Shop route to upgrade her family home.

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  6. Photo of Anne Marie
    Home Energy Upgrades

    Galway home goes from BER C2 to A1

    Anne Marie’s home in the heart of Galway City underwent a full energy upgrade and is now super warm, cosy and energy efficient.

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  7. 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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  8. 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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  9. Heat pump and Solar PV array at Ballyogan Operations Centre
    Business & Industry
    Public Sector
    Renewable Technologies
    Featured

    Dún Laoghaire-Rathdown County Council Ballyogan Operations Centre Decarbonisation Project

    This case study examines the decarbonisation project for the Ballyogan Operations Centre, part of Dún Laoghaire-Rathdown County Council corporate estate. It serves as a powerful example of what can be accomplished through collaboration and shared values, and it will undoubtedly inspire other public bodies who are looking to enhance energy performance.

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  10. Aerial view of Astellas Kilorglin site.
    Business & Industry
    Large Industry Energy Network

    Astellas Ireland achieving significant sustainable energy goals

    The Astellas Killorglin site is reaping the benefits from investing in several energy efficiency projects.

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  11. Group photo taken at Broiler Advisory Services.
    Business & Industry
    EXEED

    Broiler Advisory Services Reduces Energy by 52% with EXEED

    Through SEAI's EXEED-certified Energy Efficient Design approach, Broiler Advisory Services reduced farm energy use and associated carbon emissions by 52%, saving 1.4 GWh and 350 tonnes of CO2e annually while improving operational control.

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  12. Tipperary Town SEC presenting its Energy Master Plan in a townhall
    Communities

    Tipperary Town Sustainable Energy Community (SEC)

    The Tipperary Town SEC has achieved great things since its formation by bringing the local community together.

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  13. David Currid, owner of Grantstown Nurseries, holding a box of tomatoes.
    Business & Industry
    Renewable Technologies
    Support Scheme for Renewable Heat

    Grantstown Nurseries install biomass boiler

    A second-generation tomato grower moves away from using fossil fuels to renewable heat to heat the glass houses.

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  14. The Energy Team at Kepak Group accepting their SEAI Energy Award 2025.
    Business & Industry

    Kepak makes award winning energy efficiency improvements

    Kepak Group won the SEAI Energy Award 2025 for ‘Large Business’

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  15. ISCycle-case-study
    Energy Research

    ISCycle – Supporting an inclusive and sustainable transition away from fossil fuel transport

    This research project explores the impact of short-term ebike loans in workplace settings and is aimed at individuals often excluded from existing schemes, such as caregivers, people with disabilities and those outside standard employment.

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  16. Barrow Valley Tourism Hub
    Communities

    Graiguenamanagh Sustainable Energy Community Solar Project

    This Kilkenny SEC aims to achieve 100% energy self-sufficiency for Graiguenamanagh by 2030.

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