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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Group gathered outside at the Irish Wheelchair Association building in Belmullet
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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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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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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Group photo taken at Broiler Advisory Services.
Business & Industry

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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David Currid, owner of Grantstown Nurseries, holding a box of tomatoes.
Business & Industry
Renewable Technologies

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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  1. 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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  2. 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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  3. Churchfield Home Services
    Home Energy Upgrades

    Home Energy Upgrade Loan Scheme sample cases

    The Home Energy Upgrade Loan Scheme offers a short-term, unsecured loan with low interest rates.

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  4. St-Marys-Hospital
    Public Sector

    Window restoration and ventilation upgrade at St. Mary’s Hospital

    The Energy Team carried out multiple energy upgrades at St Mary’s Hospital making it warmer and more comfortable for patients and staff.

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  5. Solar panels at St. Marys campus in Phoenix Park
    Public Sector
    Renewable Technologies

    Solar PV at St. Mary’s campus in Phoenix Park

    Green Team aims to reduce energy bills and generate renewable electricity with new Solar PV system.

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  6. Gilead's steam generation boiler
    Large Industry Energy Network
    Business & Industry

    Gilead Data Collection – Steam Generation Metrics

    Gilead’s Carrigtwohill facility has identified the data requirements to facilitate the development of effective energy performance indicators (EnPIs).

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  7. Boston-scientific-case-study
    Business & Industry
    EXEED

    Boston Scientific achieves certification in energy efficient design

    Boston Scientific applied Energy Efficient Design principles during design of new equipment reducing operational energy consumption by 42%.

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  8. John Brady, a homeowner, standing outside his recently upgraded home.
    Home Energy Upgrades

    A north Dublin home goes from a D1 to A3 with a home energy upgrade

    Homeowner John Brady is thrilled with his warmer home and significant savings on his electricity bill.

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  9. Trad-Homes
    Home Energy Upgrades

    Traditional Homes Pilot - Gortavalla Farmhouse

    SEAI's Traditional Homes Pilot supports homeowners improving the energy performance of traditionally constructed dwellings while acknowledging their particular conservation needs.

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  10. exterior of School of Pharmacy at UCC
    Public Sector

    UCC School of Pharmacy implements bivalent heat pump retrofit

    University College Cork (UCC) is one of Ireland’s oldest universities with a strong track record of sustainability.

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  11. The Cottage, Loughmore - Community Co-Operative Shop & Tearooms.
    Communities

    EcoVision Sustainable Energy Community (SEC)

    EcoVision – what started as a community energy initiative is now a thriving community cooperative business.

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  12. Ellie, a homeowner, outside her newly upgraded house
    Home Energy Upgrades

    Cork cottage goes from BER D2 to A3

    Homeowner Ellie wanted to create a cosy cottage vibe for her new home

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  13. houses-solar-panels
    Energy Research

    Software enables authorities to assess energy performance of housing

    Retrokit 2.0 is a cloud-based project planning and implementation toolkit to foster the uptake of deep energy retrofit in housing.

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  14. ocean-wave
    Energy Research

    Ireland now has an integrated solar, wind and wave energy forecasting system

    Researchers have been working on ways to improve forecasting capabilities to benefit effective renewable energy usage.

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  15. Defence Forces
    Public Sector

    The Defence Forces reach decarbonisation targets through energy upgrade measures

    Throughout its facilities, the organisation has undertaken energy upgrades including solar panels, EV charging infrastructure, heat pumps and new heating systems.

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  16. Energy efficient homes
    Energy Research

    The reality of daily energy use in A-rated homes

    We all know that A-rated homes are the most energy efficient - but how do they perform in the reality of daily use, compared to expectations?

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