Reliable electrical services for Northern Ireland.
McDonnell Shields Electrical is a Northern Ireland-based electrical contractor delivering commercial installation, inspection, testing, compliance and renewable energy services. We support clients who require safe, well-documented, professionally delivered electrical work across live, operational and compliance-critical environments.
Built on reliability and attention to detail
McDonnell Shields started with a simple commitment: deliver electrical work that's done right the first time. Whether it's EICR testing for landlords, installation work for commercial clients, or large scale renewable projects, we focus on safety, quality, and clear communication with every job.
Experienced Electricians Serving Northern Ireland
McDonnell Shields Electrical was built around a simple commitment: deliver safe, compliant and well-documented electrical work for clients who need it done right first time. We support commercial premises, public sector estates, principal contractors, facilities managers and renewable energy projects with installation, inspection, testing, certification, remedial works and technical support. Our focus is clear communication, practical technical advice, safe delivery and reliable documentation from initial enquiry through to completion.
Principal Contractor
Lead Electrician
Delivers EICR testing, inspections, and installation work with focus on code compliance and customer safety across landlord and commercial projects in Northern Ireland.
Electrical Technician
Installation Specialist
Handles commercial electrical installations with attention to detail and adherence to UK building regulations and safety standards.
Trusted electrical expertise across Northern Ireland
McDonnell Shields delivers reliable EICR certifications, testing, and installation work for commercial clients who need it done right.
100%
Compliance on every job
Every EICR certification and installation meets current UK electrical safety standards.
1000+
Properties inspected
We've tested and certified electrical systems for landlords and commercial businesses in Killyleagh and surrounding areas.
24hr
Response time
We prioritise urgent inspection requests and get back to you the same business day.
35+
Years in the trade
Extensive experience with domestic, commercial, and rental property electrical work.
Let's discuss your electrical needs.
Contact McDonnell Shields today for support on any electrical projects you need support with