Energy Efficient Design: Why It Matters in Modern Construction

Energy performance is becoming a key consideration across construction and development projects in Ireland. Rising energy costs, evolving building regulations and growing sustainability targets are all increasing the demand for smarter, more efficient buildings. 

As a result, Energy Efficient Design (EED) is no longer viewed as an added extra. It is now an important part of delivering compliant, cost-effective and future-focused developments.

What is Energy Efficient Design? 

Energy Efficient Design focuses on reducing the lifecycle energy and CO2 consumption of a building by implementing efficient processes, guiding principles and control systems into the design stage of a project. 

This can include everything from building orientation and insulation to heating, ventilation, lighting and renewable energy systems. The goal is to create buildings that use less energy while still delivering comfort, functionality and long-term performance. 

When considered early in the design process, EED can significantly reduce lifecycle energy and carbon costs of a building. 

Why is EED Becoming More Important? 

In Ireland, stricter energy performance requirements and sustainability targets are placing greater emphasis on building efficiency across all sectors. 

Regulations such as Part L of the Building Regulations and NZEB standards are continuing to shape how buildings are designed and delivered. At the same time, developers, asset owners and occupiers are under increasing pressure to reduce operational costs and improve ESG performance. 

Energy-efficient buildings are also becoming more attractive from an investment and occupancy perspective, particularly as organisations place greater focus on sustainability and long-term operational savings. Including EED in the design stage provides confidence and trust for investors by providing assurance of energy performance.

Who Needs Energy Efficient Design? 

Energy Efficient Design is relevant across a broad range of sectors and project types, including:

• Commercial developments  
• Residential projects  
• Healthcare and educational facilities  
• Industrial and manufacturing buildings  
• Public sector developments  
• Refurbishment and retrofit projects  

Whether it’s a new build or an upgrade to an existing asset, integrating energy efficiency measures early can help improve overall project outcomes and reduce costly design changes later in the process. 

The Benefits of Energy Efficient Design 

Lower Operational Costs 

Reducing energy consumption can significantly lower long-term utility and operating costs for building owners and occupiers. 

Improved Compliance 

Early consideration of EED helps projects align with current energy performance requirements and sustainability objectives. 

Better Building Performance 

Well-designed buildings can provide improved thermal comfort, air quality and overall user experience. 

Increased Asset Value 

Buildings with strong energy performance are increasingly attractive to investors, tenants and purchasers looking for more sustainable, future-ready assets. 

Reduced Environmental Impact 

Lower energy demand supports wider carbon reduction and sustainability goals, helping organisations reduce their environmental footprint.

Common Challenges 

One of the most common issues on projects is that energy performance is considered too late in the design process. This can lead to avoidable redesign work, increased costs and missed opportunities to improve building efficiency. 

A coordinated approach between design disciplines from the outset is often key to achieving the best results. 

How ORS Supports Energy Efficient Design 

The ORS Sustainability Team works with clients, design teams and project stakeholders to integrate energy-efficient strategies into developments from the earliest stages of design. 

Our multidisciplinary approach allows us to consider energy performance alongside wider project requirements, helping clients balance compliance, sustainability, operational efficiency and commercial objectives. 

With experience across multiple sectors, ORS supports the delivery of practical, high-performing and sustainable building solutions tailored to each project’s needs.

To learn more about how ORS can support your project with Energy Efficient Design, contact our Sustainability team at info@ors.ie or call +353 1 524 2040.