Rethinking emergency lighting specification

Thursday 2 April 2026

Emergency lighting has often been treated as a compliance exercise – something to be completed as part of the overall design and signed off at handover. But across many projects today, particularly in Ireland and the UK, it has become a much more significant engineering decision, with implications for long-term performance, maintenance and safety.

As buildings become more complex and expectations around resilience, accountability and whole-life performance increase, emergency lighting can no longer be considered a secondary system.

Looking beyond compliance

Compliance with standards remains fundamental, but engineers are increasingly required to apply these standards in the context of each individual project.

In Ireland, this means working in accordance with IS 3217, to meet obligations and certification responsibilities. Achieving clarity around illuminance levels, escape routes, duration and signage is essential, particularly as expectations around documentation and accountability continue to grow.

Maintenance and testing: Earlier design decisions

Testing and maintenance are now influencing system design much earlier in the process. Traditionally addressed after handover, these considerations are now shaping system selection from the outset. The choice between manual testing, self-test systems or fully automated monitoring affects maintenance workload, access requirements and compliance risk.

This is particularly relevant on large residential schemes, data centres and pharmaceutical facilities, where system scale, access and operational continuity must be carefully considered from day one.

Designing for complex projects

On more complex developments, such as healthcare, infrastructure and life sciences projects, central battery systems and static inverters introduce additional technical considerations. Load sizing, inrush current, cabling strategies and fault management all need to be carefully coordinated, often alongside practical constraints such as limited plant space or working within existing buildings.

At the same time, there is a clear move towards greater visibility and system control. DALI-based and centrally monitored systems are becoming more common, particularly on commercial and industrial projects, helping to reduce manual testing and making compliance easier to demonstrate.

Professional development for engineers

In response to these industry changes, Ventilux has expanded its professional development programme for engineers, consultants and specifiers across Ireland and the UK. The programme focuses on the practical challenges associated with emergency lighting design - from standards and system selection to testing and central battery systems.

The initiative also coincides with the company’s 40th anniversary in the emergency lighting sector, reflecting how industry expectations have evolved towards maintainability, accountability and long-term value, rather than simply achieving compliance at handover.

Ultimately, emergency lighting will always be a life safety system. But delivering it well now depends on making informed decisions early, understanding how systems will be used and maintained in practice, and designing with the full life cycle of the building in mind.