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. HTC_Court-Image-1
    Communities
    Featured

    Local Community Tennis Club, Hazelwood, upgrades its club and takes on new members thanks to the Castlepook Community Benefit Fund

    Hazelwood Tennis Club is the last remaining sporting club operating in Hazelwood, Newtwopothouse in Mallow, Co. Cork. Thanks to the Castlepook Community Benefit Fund, it has been able to upgrade its club and accommodate new members.

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  2. Clew-Bay-Hotel_SSEA-CS
    Business & Industry

    SEAI Energy Audit helps Clew Bay Hotel on their journey to carbon neutrality

    The Westport-based hotel decided to progress their energy efficiency and sustainability journey further with an Energy Audit.

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  3. Solar-3
    Business & Industry
    Featured

    SSEA provided Bellurgan Precision with a data-driven approach to energy reduction

    Manufacturing firm Bellurgan Precision applied for SEAI's Support Scheme for Energy Audits (SSEA) as a means to meet one of their sustainability objectives for 2022-2023, which was an energy audit.

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  4. CoWind_Team-Photo
    Communities
    Energy Research
    Renewable Technologies
    Featured

    Community Engagement in Wind Energy: Innovative approaches to achieving a social license (Co-Wind)

    The 2018 SEAI National Energy Research Development & Demonstration (RD&D) Programme supported the UCC led Co-Wind project, which aims to better understand and improve community engagement with local wind farms in Ireland

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  5. D25389-0003
    Business & Industry
    Support Scheme for Renewable Heat

    Radisson Blu, Letterkenny halves its heating bill

    The Radisson Blu Hotel in Letterkenny, Co. Donegal, switched from using oil to heat the hotel to a biomass boiler, with support from SEAI.

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  6. Robert-Settino_HEA_Trim-Co.-Meath
    Home Energy Upgrades

    Energy Upgrade for Co. Meath Home

    Meath homeowner upgraded his home from a BER D1 to a BER A3 and are now enjoying the comfort levels one can expect to feel in an energy efficient home.

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  7. UCC-MaRINET2-image
    Energy Research

    SEAI Energy Awards 2022 Winner | Ore Group MaREI UCC

    Ore Group MaREI UCC were the winners of the 'Excellence in Energy Research and Innovation' category at the SEAI Energy Awards 2022. Find out why, in this case study.

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  8. Wren-Urban-Nest_Image_26-10-22
    Business & Industry

    SEAI Energy Awards 2022 Winner | Wren Urban Nest and BDP

    Wren Urban Nest and BDP were winners of the 'Energy in Buildings' category at the SEAI Energy Awards 2022. Read this case study on their Awards submission.

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  9. Port-of-Cork-EXEED_2
    Business & Industry

    Port of Cork reduces electricity use and carbon emissions

    The EXEED process was implemented at the Port of Cork, identifying several areas for energy savings. The LED lighting upgrade alone drastically reduced the level of electricity consumed at the Port.

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  10. DJI_0726
    Business & Industry
    Renewable Technologies
    Featured

    Wyeth Nutrition Ireland achieves EXEED Certification

    The Limerick manufacturing site Wyeth Nutrition incorporated energy efficiency design with support from SEAI.

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  11. Diageo_St-James-Gate_EXEED-Case-Study
    Business & Industry
    Climate Action

    Diageo invests in St. James's Gate Brewery through EXEED

    International beverage manufacturer Diageo are planning significant investments for their St. James's Gate Brewery site in Dublin through the EXEED managed process

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  12. MSD-Carlow_1
    Business & Industry
    Renewable Technologies
    Featured

    MSD Carlow makes Energy Efficient Design a priority

    Pharmaceutical company MSD Carlow followed a key building method for ensuring energy efficiency & sustainability in the construction of their new lab.

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  13. Element-Six-site
    Business & Industry
    Climate Action
    Featured

    Element Six makes big strides on their decarbonisation journey

    Element Six implemented the Energy Management System (EnMS0 ISO50001:2018 standard on their site, in addition to a heat pump, to continually improve energy performance.

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  14. Temmler
    Business & Industry
    Climate Action
    Renewable Technologies

    Temmler switches from Oil to Biomass

    Switching to a Biomass Boiler helped Temmler to hit its
    decarbonisation goals.

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  15. Killybegs-Quayside-Power-Socket-thumbnail
    Business & Industry

    Killybegs Harbour Switches to Cold Ironing

    Department of Agriculture, Food and the Marine establishes cold-ironing power supply for fishing trawlers.

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  16. Cavan-County-Council-lighting-thumbnail
    Business & Industry

    Cavan County Council upgrades street lighting

    Since 2016, Cavan County Council have been upgrading their streetlights to greener, more energy efficient LED technology as part of their ongoing Streetlight LED Retrofit Scheme.

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