What Is the Deep Retrofit Pilot Program in Ireland?

by | Mar 21, 2024

In our journey towards a more sustainable and energy-efficient future, Ireland’s Deep Retrofit Pilot Program stands out as a beacon of transformative change. Launched by the Sustainable Energy Authority of Ireland (SEAI), this initiative seeks to tackle one of the nation’s most pressing challenges: the energy inefficiency of older homes. With a significant portion of residential energy demand stemming from outdated insulation and heating systems, the program aims not only to enhance comfort and reduce energy use but also to serve as a blueprint for nationwide retrofitting efforts.

In this blog we will discuss the heart of this innovative program, exploring its objectives, achievements, and the lessons learned along the way.

What is the Deep Retrofit Pilot Program?

The journey to renew Ireland’s older homes starts with the Deep Retrofit Pilot Program, a visionary initiative led by the Sustainable Energy Authority of Ireland (SEAI). By turning the spotlight on energy wastage in residential spaces, this program sets the stage for a transformative makeover, aiming to reconfigure the very essence of home energy consumption.

The Beginning: 

Launched with a clear vision by the SEAI, the Deep Retrofit Pilot Program is Ireland’s ambitious response to the urgent need for energy-efficient homes. This program seeks not just to retrofit but to revolutionise the way homes conserve energy, making them both comfortable and sustainable.

Why It’s Needed: 

Irish homes, many steeped in history, often fall short in energy retention, necessitating prolonged heating and resulting in escalated energy usage. The program addresses this by retrofitting homes to significantly enhance their heat retention capabilities, thus easing the strain on both the environment and household budgets.

How It Works: 

Selected homes undergo a comprehensive makeover, receiving upgrades like advanced insulation and modern windows, and in some cases, innovative heating solutions. The transformation aims to slash energy consumption while elevating the living experience.

The Results So Far:

The outcomes are impressive, with retrofitted homes achieving top-notch ‘A’ energy ratings, marking a drastic improvement from their pre-retrofit statuses. This leap in energy efficiency underscores the program’s effectiveness.

Sharing What’s Learned:

A key pillar of the program is the dissemination of its findings, ensuring that the successful strategies and technologies employed can benefit a broader spectrum of Irish homes in the pursuit of energy efficiency.

What Is the Deep Retrofit Pilot Program in Ireland? 4

What Are Some Challenges Faced in Irish Housing Energy Efficiency?

As we explore the energy challenges faced by Irish homes, it’s clear that the road to efficiency is filled with hurdles, each demanding innovative solutions. These challenges highlight the complexities of transitioning to a more sustainable living environment.

Old Homes:

The architectural charm of Ireland’s older homes often masks their inefficiency in energy conservation. Thin walls and dated windows contribute to significant heat loss, making these homes energy-intensive to keep warm.

Wasting Energy:

The poor heat retention in these homes necessitates extended heating periods, leading to excessive energy consumption. This not only burdens the environment but also inflates energy bills for homeowners.

Hard to Update:

Retrofitting these historical dwellings presents its own set of challenges, from the technical difficulties in integrating modern insulation to the financial implications of such comprehensive upgrades.

Different Home Types:

The diversity in Irish home designs further complicates the retrofitting process, as each structure demands a customised approach to achieve optimal energy efficiency.

Need for Expertise: 

Achieving a successful retrofit requires skilled professionals who can navigate the intricacies of each home’s needs, ensuring that every upgrade contributes to the overall goal of energy conservation.

What Are the Objectives and Scope of the Program?

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The Deep Retrofit Pilot Program stands as a cornerstone in Ireland’s journey towards a greener and more energy-efficient future. With a focus on transforming the energy profile of older homes, this initiative is paving the way for a broader adoption of sustainable living practices across the nation.

Enhancing Home Energy Efficiency:

At the heart of the program is a mission to drastically lower energy consumption in Ireland’s older homes. Targeted updates, including state-of-the-art insulation and heating solutions, are central to this endeavour, ensuring homes not only use less energy but also provide a more comfortable living space for their occupants.

Understanding Retrofitting Challenges:

The program delves deep into the complexities of retrofitting, seeking to address the challenges inherent in modernising aged structures. From architectural constraints to the diversity of building materials, each aspect is deeply examined to ensure the most effective retrofitting strategies are employed.

Exploring Opportunities:

Beyond overcoming challenges, the initiative is keen on uncovering new frontiers in retrofitting technology and methodology. The pursuit of advanced materials and innovative retrofitting techniques stands to revolutionise how homes are upgraded for energy efficiency.

Setting a Precedent for Future Projects: 

The program’s rigour in documenting its processes and outcomes aims to lay a solid foundation for scaling up retrofitting efforts across Ireland. The insights garnered are expected to streamline future projects, making widespread retrofitting more accessible and effective.

Engaging with Homeowners and Communities:

A crucial element of the program is its engagement with the people at the heart of these homes. By promoting a collaborative environment, the initiative not only educates but also empowers communities and homeowners to embrace the benefits of energy-efficient living.

What Are the Main Components of Deep Retrofitting?

Deep retrofitting involves more than just a singular focus; it’s about integrating a multitude of components to achieve optimal energy efficiency. Each element plays a crucial role in transforming homes into bastions of sustainability.


Think of insulation like wrapping your home in a cosy blanket. It keeps the warmth inside during winter and out during summer. There are different places to put this “blanket,” like in the attic, the walls, and around the house. This helps in stopping heat from escaping, which means you don’t need to use as much energy to keep your home warm.

Heating System Upgrades:

This part is about making your home’s heating better. Old heaters can waste a lot of energy. By changing them to newer, smarter ones, like heat pumps, your home can stay warm without using so much power. It’s like swapping an old, thirsty car for a new, fuel-efficient one.

Windows and Doors: 

Old windows and doors can let cold air in and warm air out. By putting in better windows and doors with double or triple layers of glass, your home can keep the right temperature better. It’s like sealing leaks in a ship to keep the water out.

Ventilation Systems: 

Good air in your home is important for staying healthy. New ventilation systems make sure that fresh air comes in without losing heat. It’s like having a smart system that brings in fresh air but keeps the warmth.

Solar Panels: 

Solar panels are like magic sheets that catch sunlight and turn it into electricity for your home. This means you can use less energy from other places, and sometimes even make your power bill cheaper. It’s a great way to use the sun’s power to help your home and the planet.

What Are the Achievements and Impact of Deep Retrofit Pilot Program?

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With each retrofit, the Deep Retrofit Pilot Program not only redefines the energy narrative of Irish homes but also sets new benchmarks in sustainable living.

Significant Energy Savings: 

The program’s foremost achievement lies in its ability to significantly cut down energy usage in retrofitted homes. The attainment of ‘A’ energy ratings across numerous properties underscores the effectiveness of the retrofitting interventions and their role in promoting energy conservation.

Improved Home Comfort: 

Beyond energy savings, the qualitative impact of the program is evident in the enhanced comfort levels within retrofitted homes. The adoption of superior insulation and heating systems has transformed these spaces into havens of warmth in the winter and cool retreats in the summer, significantly improving the quality of life for residents.

Increased Property Value: 

The ripple effects of deep retrofitting extend into the real estate market, with retrofitted homes witnessing a notable appreciation in value. The allure of an ‘A’ energy rating not only reflects a home’s efficiency but also its appeal to environmentally conscious buyers, thereby elevating its market standing.

Reduction in Carbon Footprint: 

A key environmental milestone of the program is the reduction in carbon emissions achieved through decreased reliance on energy-intensive heating and cooling practices. This significant stride towards sustainability aligns with Ireland’s broader environmental objectives and its commitment to mitigating climate change.

Knowledge Sharing and Community Engagement: 

The program’s legacy is further enriched by its success in cultivating a community of informed and engaged homeowners. Through the dissemination of case studies and practical insights, the initiative has kindled a widespread interest in energy efficiency, fostering a culture of sustainability that extends far beyond the confines of the program itself.

What is the General Eligibility Criteria for the Deep Retrofit Pilot Program?

To get the Deep Retrofit Pilot Program in Ireland the eligibility criteria for homeowners vs. landlords or property investors is different. Here we have listed both for your benefit:


Primary Residence:

The program often targets the primary residences of applicants, ensuring that the benefits of retrofitting directly improve the living conditions of the occupants.

Property Age: 

There’s usually a focus on older homes, particularly those built before a specific year (e.g., 2006), as these are less likely to meet modern energy efficiency standards.

Energy Rating: 

Homes with a lower BER (Building Energy Rating) before retrofitting, such as those rated D or below, might be prioritised to ensure that the impact of the upgrades is maximised.

Landlords and Property Investors:

Rental Properties: 

Landlords may be eligible if they commit to improving the energy efficiency of their rental units, which can enhance tenant comfort and reduce operational costs.

Community Projects:

Group Applications: 

In some cases, community groups or associations can apply for grants to undertake retrofitting projects across multiple homes, fostering community-wide energy efficiency improvements

How to Apply for Your Deep Retrofit Grant – Application Process Overview:

Here is the step by step process to apply for the Deep Retrofit Pilot Program in Ireland:

1: Initial Steps:


To begin, it’s crucial to conduct thorough research to ensure a solid understanding of the program’s scope, requirements, and potential benefits. This involves:

  • Visiting the SEAI website to access up-to-date information on the Deep Retrofit Pilot Program, including guidelines, eligibility criteria, and any recent updates or changes to the program.
  • Reading through case studies or testimonials from previous participants to gauge the program’s impact and understand the types of improvements that have been successful.
  • Consulting with energy efficiency experts or attending SEAI workshops/seminars to gain deeper insights into best practices in home retrofitting and to stay informed about the latest technologies and materials used in energy-efficient construction.

Energy Assessment:

An energy assessment is a critical step in identifying how your home can become more energy-efficient. This involves:

  • Contacting a certified Building Energy Rating (BER) assessor. You can find a list of registered assessors on the SEAI website or through local directories.
  • The assessor will conduct a thorough examination of your home, including its current insulation, heating system, windows, doors, and overall energy usage.
  • Based on this assessment, the assessor will provide a BER certificate, which outlines your home’s current energy efficiency rating and suggests potential improvements.

2: Application Submission:

Gather Documentation:

Preparing the right documentation is key to a successful application. This typically includes:

  • Proof of property ownership, such as a deed or a recent utility bill in your name.
  • The current BER certificate for your home, showing its pre-retrofit energy rating.
  • Detailed plans or proposals for the retrofitting measures you intend to implement, which might include contractor quotes, technical specifications for the proposed installations (e.g., insulation materials, heating systems), and any architectural plans if structural changes are anticipated.

3: Submit Application:

Submitting your application can usually be done through one of two methods, depending on the program’s current procedures:

Online Submission: 

  • Many programs offer an online portal through the SEAI website, where you can create an account, fill out the application form, and upload all necessary documents. This method is often preferred for its ease and efficiency.

Physical Submission: 

  • In some cases, or if preferred, you might be able to submit a physical application. This would involve downloading the application form from the SEAI website, filling it out by hand, and mailing it along with your documentation to the specified address.

4: Post-Application:

Approval and Planning: 

  • Wait for application review and approval. Upon approval, you may need to finalise your retrofitting plans with approved contractors.

Project Implementation: 

  • Undertake the retrofitting work as per the approved plans, adhering to all program guidelines and quality standards.

Completion and Verification: 

  • After the work is completed, a post-retrofit BER assessment will verify the improvements. This assessment is crucial for grant disbursement.

5: Grant Disbursement:

Claiming the Grant: 

  • Follow the SEAI’s process for claiming the grant, which may involve submitting the post-retrofit BER certificate and any other required documentation.

Tips for a Smooth Application Process:

  • Ensure all documents are complete, accurate, and up-to-date to avoid delays.
  • Keep copies of all submitted documents for your records.
  • Pay close attention to deadlines to ensure your application is submitted on time.
  • Consider reaching out to an SEAI advisor or an experienced contractor for guidance on completing your application and planning your retrofitting project.

What To Keep in Mind While Planning for a Deep Retrofit Pilot Program?

Stay informed and prepared for your retrofit journey by considering the following:

Program Updates: 

Eligibility criteria and application processes can evolve, reflecting policy shifts or budgetary adjustments.

Regional Differences: 

Specific requirements may vary by region or local government area.

Professional Guidance

Engaging with SEAI-approved contractors and advisors can provide valuable insights and ensure compliance with all program requirements.


The Deep Retrofit Pilot Program in Ireland is an important initiative that focuses on making old homes more energy-efficient. By improving insulation, heating systems, windows, doors, and adding solar panels, it has successfully turned many homes into energy-saving examples. This not only helps save on energy bills but also makes homes more comfortable to live in and reduces their impact on the environment. The program has shared its learnings and strategies, encouraging a wider adoption of energy-efficient practices across the country.

If you’re looking to make your home more energy-efficient, save money, and contribute to a healthier planet, Coastal Homes is here to help. If you want to understand more about the Deep Retrofit Program, or need help to apply for the grant, reach out to us – we will help you with a smooth and hassle-free procedure, Contact Coastal Homes today to take the first step towards upgrading your home for the future.


What is the Deep Retrofit Pilot Program?

The Deep Retrofit Pilot Program in Ireland was initiated to explore the best methods for upgrading the energy efficiency of existing homes, aiming to understand and overcome the challenges of making homes more energy-efficient and reducing overall energy demand.

What does a ‘deep retrofit’ involve?

Deep retrofitting is an extensive process aimed at significantly improving a home’s energy efficiency. This could include adding insulation, air sealing, improving ventilation, resizing radiators, implementing solar energy solutions, and upgrading heating systems among other measures.

Who launched the Deep Retrofit Pilot Program?

The Sustainable Energy Authority of Ireland (SEAI) launched the program to address the challenges and opportunities presented by deep retrofitting and to inform future policy and large-scale retrofitting initiatives across Ireland.

What are the goals of the Deep Retrofit Pilot Program?

The program’s goals include making home upgrades both achievable and attractive to homeowners, encouraging the market to deliver integrated, whole-house solutions for achieving an A energy rating, and informing policy options for future retrofit programs.

Are there financial incentives available for participants in the program?

Yes, the program offers grant support covering up to 50% of the costs associated with renovating a home to meet the specified energy efficiency criteria.

What are the criteria for homes to be eligible for the program?

Eligible homes must achieve an A energy rating, focus on efficiency first by improving insulation and airtightness, use renewable energy sources for heating, and ensure good indoor air quality through mechanical ventilation.

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