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. Members of Youghal SEC
    Climate Action
    Communities

    Youghal Blue & Green Community Network SEC

    Youghal SEC is part of a proactive community-led network which has created a membership model approach for other communities to follow. Their goal is to reduce their carbon footprint while also fostering a sense of pride and collective responsibility within their town in County Cork

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  2. A group of URL people standing infront of a fish sculpture
    Climate Action
    Communities

    Sligo Sustainable Energy Community

    Sligo town’s largest energy users and employers are working together to achieve behavioural change and lower carbon emissions across Sligo and Leitrim.

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  3. Four people riding bikes
    Climate Action
    Communities

    Triple SEC: Connecting Cabra SEC, Phibsboro Village SEC and Cosybatter SEC

    Triple SEC is changing the narrative around retrofitting to make it understandable and accessible to everyone in their community.

    Find out more
  4. Family outside house with solar pv
    Communities
    Climate Action

    Greystones and Delgany SEC

    Greystones and Delgany Sustainable Energy Community (SEC) are tackling climate change in Co. Wicklow through grassroot initiatives, embracing innovation through technology and nature-based solutions.

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  5. drumree-gaa-pitch-lighting
    Climate Action
    Communities

    How GAA clubs are saving energy with the SEAI Community Energy Grant

    GAA clubs around the country are benefiting from warmer, more comfortable facilities, better lighting, reduced energy bills and a lower carbon footprint.

    Find out more
  6. 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

    Find out more
  7. 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.

    Find out more
  8. 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.

    Find out more
  9. Annahagh-Roundabout-After_thumbnail
    Renewable Technologies
    Climate Action
    Communities

    Public Lighting Upgrade for County Monaghan

    Monaghan County Council is the first local authority to retrofit all its streetlights to LEDs.

    Find out more
  10. Marine-Institute-staff
    Business & Industry
    Climate Action

    Marine Institute Staff Engagement Campaign

    The Marine Institutes's 'Get Greener' staff engagement campaign has reached several hundred staff with a series of mini campaigns that highlighted ways to save energy at work and at home.

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  11. One-small-change-logo
    Climate Action

    Courts Service Staff Engagement Campaign

    The Courts Service quickly recognised that the engagement of staff was key to making energy efficiency gains.

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  12. Inishowen-SEC
    Communities
    Climate Action

    Inishowen Sustainable Energy Community leads the way

    Inishowen Sustainable Energy Community (SEC) plans to become a renewable energy centre of excellence.

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  13. Port-of-Waterford_1200-x-800px
    Climate Action
    Communities

    Port of Waterford hits 2020 energy efficiency targets

    Port of Waterford have achieved their 2020 energy efficiency targets and are working towards the dual energy efficiency and carbon reduction targets for 2030, assisted by EcoMerit and ISO 14001 certifications.

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  14. Defence-Forces_PV_1200-X-800px
    Climate Action

    The Defence Forces's Solar PV Project

    The Irish Defence Forces continues its programme of implementing renewable energy onsite generation through the installation of Solar PV systems.

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  15. TG4_1200-x-800-px
    Climate Action

    Energy efficiency at TG4

    TG4's philosophy is to do more with less - this ideology has been actioned through their efficient use of energy and 'green' project planning.

    Find out more
  16. Dublin-city-grab_1200-x-800-px
    Business & Industry
    Climate Action

    Dublin City Council leading by example

    Dublin City Council (DCC) won the Leadership in Public Sector Award at the SEAI Energy Awards 2020 and is one of ten award winners.

    Find out more
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