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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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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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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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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  1. Hugh Franklin
    Home Energy Upgrades

    Hugh’s new home goes from BER C3 to A1

    Hugh Franklin sold his 5-bedroom family home in the Kildare countryside and bought a smaller 2-bed home in the centre of Kilcock town.

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  2. Mark's home
    Home Energy Upgrades

    Limerick farmhouse transforms from BER G to A2

    Mark's family farmhouse underwent a home energy upgrade through SEAI's One Stop Shop service and was upgraded from BER G to A2.

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  3. 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.

    Find out more
  4. 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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  5. 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.

    Find out more
  6. 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.

    Find out more
  7. 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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  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. 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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  11. Frank home
    Home Energy Upgrades

    Glasnevin home achieves BER A3 after home energy upgrade

    Frank’s Glasnevin semi-detached home went from BER G to BER A3 after a home energy upgrade through SEAI’s One Stop Shop service.

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  12. 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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  13. 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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  14. Natalie-and-Phil_KK_OSS
    Home Energy Upgrades
    Featured

    Kilkenny couple transform their 90s bungalow through the One Stop Shop service

    Homeowners Natalie and Phil give their cold, energy inefficient home an energy upgrade using a registered One Stop Shop which managed the entire project from start to finish.

    Find out more
  15. fergal-cantwell_1200px
    Home Energy Upgrades

    Envirobead Retrofit reaps benefits of being a One Stop Shop

    The Envirobead team explains why they decided to register with SEAI as a One Stop Shop.,

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  16. Caroline-Ashe-Brady_KORE-Retrofit
    Business & Industry
    Home Energy Upgrades

    Why KORE Retrofit registered as a One Stop Shop

    Caroline Ashe-Brady, Commercial Director at KORE Retrofit, explains the benefits of becoming a registered One Stop Shop

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