How to ensure emergency lighting works during power cuts

Power cuts can be inconvenient, but in a commercial setting they can quickly become dangerous. When the lights go out, emergency lighting is what keeps people safe, guiding them to exits and preventing panic. If that system fails, the consequences can include injury, regulatory breaches and serious reputational damage.

So how can businesses make sure their emergency lighting doesn’t let them down when it’s needed most?

Why emergency lighting matters

Emergency lighting is a legal requirement in the UK under fire safety regulations. It ensures that escape routes remain visible if the mains power supply fails, whether due to a fault, fire or external outage.

So installing emergency lighting is a given. But keeping it operational is where many businesses fall short. Here’s what you can do to ensure that the emergency lighting at your commercial premises doesn’t fail because of a power outage.

1. Choose the right system from the start

There are different forms of emergency lighting system depending on your premises and usage. The two most common types are:

– Maintained systems, where the lights stay on continuously and switch to battery power during cuts
– Non-maintained systems, where the lights only come on when the power fails

Public-facing environments like cinemas or theatres typically require maintained lighting, while offices may use non-maintained systems.

The key is ensuring your system is properly specified, installed and compliant with British Standards such as BS 5266.

2. Install reliable back-up power

Emergency lighting relies on back-up power, usually rechargeable batteries. If those batteries fail, so does your lighting. Reduce risk by:

– Using high-quality battery units with proven lifespan ratings
– Considering central battery systems for larger buildings
– Ensuring batteries are correctly sized for the required duration (typically one to three hours)

It’s also worth noting that batteries degrade over time, even if they’re rarely used.

3. Commit to regular testing

One of the most common reasons emergency lighting fails is simple: it hasn’t been tested.

UK guidelines recommend both monthly and annual tests. Monthly functional tests briefly simulate a power failure to ensure lights activate. Annual full-duration tests confirm lights stay on for the required period.

You’ll need to keep a logbook of all tests. Not only does this help you stay organised, but it’s also essential for compliance during inspections.

4. Maintain and replace components proactively

Don’t forget to check your emergency lighting! Components wear out, especially batteries and bulbs, so it’s a good idea to follow best practice and do the following:

– Replace batteries every three to five years (or as specified by the manufacturer)
– Swap out dim or flickering lamps immediately
– Check for physical damage, corrosion or wiring issues

Delaying maintenance to save costs often ends up being more expensive and risky in the long run.

5. Use self-testing technology

Modern emergency lighting systems often include self-testing features. These automatically run routine checks and flag faults, reducing reliance on manual inspections.

While they don’t eliminate the need for oversight, they can significantly improve reliability, especially in larger or multi-site operations.

6. Train staff and assign responsibility

Even the best system can fail if no one is responsible for it, so ideally you should ensure that:

– A competent person is assigned to oversee testing and maintenance
– Staff understand what emergency lighting is and why it matters
– Faults are reported and addressed promptly

7. Plan for the worst-case scenario

Finally, consider how your business would respond if both your mains and the emergency lighting failed. Planning ahead can make a real difference should a genuine emergency occur.

Among the things you can check regularly are that exit routes are still identifiable, all staff know the evacuation procedures, and back-up torches or alternative lighting are easily available.

Planning for the unpredictable

Power outages are unpredictable, but your response to them doesn’t have to be. Reliable emergency lighting is a cornerstone of workplace safety, and maintaining it properly is both a legal and a moral duty.

A system that works perfectly during installation but fails during an outage is worse than useless because it creates a false sense of security. With the right set-up, regular testing and proactive maintenance, UK businesses can ensure their emergency lighting is ready for an unpredictable power cut.