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Power

At DJ O’Neill Bray Ltd we specialise in delivering high-quality electrical engineering and power infrastructure solutions across commercial, industrial, and public sector projects. As a trusted engineering contractor, we offer end-to-end services that ensure the safe, reliable, and efficient delivery of power to buildings, systems, and transport networks.

Whether it’s supporting the national grid, powering transport systems, or enabling the transition to electric vehicles, our experienced team brings precision, safety, and innovation to every project.

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Our Power Engineering Services Include:

1. MV/LV Electrical Installations

We provide full installation services for both medium voltage (MV) and low voltage (LV) systems, supporting everything from industrial facilities to EV charging infrastructure.

  • Switchgear and transformer installation

  • Power distribution boards and panels

  • Cable containment and routing systems

  • Earthing and bonding systems

2. EV Charging Infrastructure

We are a leading contractor in the rollout of EV charging solutions nationwide, integrating power systems that support public, commercial, and fleet charging.

  • Power supply upgrades for multi-unit charging

  • Load balancing and energy management systems

  • Connection to grid and renewable sources

3. Utility Ducting & Cable Installation

Safe and compliant underground ducting for power distribution, tailored to future-proof commercial and public developments.

  • Excavation and duct installation

  • Power cabling and jointing

  • Integration with lighting, signage, and control systems

4. Power Upgrades & Grid Connections

We handle site-wide power upgrades, liaising with utility providers to ensure seamless integration with the national grid or private networks.

  • ESB network connections

  • Load assessment and capacity planning

  • Infrastructure expansion and grid-tie services

5. Emergency Power & Backup Systems

Installation of resilient backup power systems to keep critical operations running during outages.

  • Generator and UPS installation

  • Changeover switch systems

  • Testing and maintenance support

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Whether you're powering new developments, upgrading existing systems, or supporting EV and smart infrastructure, DJ O’Neill Bray Ltd has the expertise to deliver reliable and future-ready power solutions.

Trusted by Clients Across Sectors

Our power engineering services support clients in industries such as:

  • Utilities & Energy

  • Transport & Rail

  • Commercial Real Estate

  • Government & Semi-State Bodies

  • Logistics & Warehousing

Why Choose DJ O’Neill Bray Ltd for Power Projects?

  • Fully certified and compliant with national standards

  • Experienced in high-demand, mission-critical environments

  • Skilled in design, installation, testing, and maintenance

  • Committed to health, safety, and sustainable engineering

  • Collaborative approach with utility providers and consultants

Our Services

Drainage

Extensive experience in design and installation of drainage solutions for foul waste and surface water.

Domestic

Catering for private individuals or developers who require small scale civil works.

E.V. Charging

Installation of a large assortment of electric solutions in a varied range of environments across the country.

Civil Works

Offering a complete service from start to finish including surveying, traffic management and customer liaison.