Photoluminescent vs. Electric Exit Signs: Reliability During Total Power Failures

In an emergency, people don’t follow plans, they follow light.

If you’ve ever sat in a late-night meeting when the lights suddenly went out, you know how quickly a calm building can feel confusing. Elevators stop, emergency buzzers chirp, and for a few seconds, everyone looks up, waiting to see which way to move. In that split second, the most reliable thing in your building isn’t your beautifully drafted evacuation plan - it’s the exit signs that actually stay visible when everything else goes dark.

For Canadian contractors, building managers, and owners, that’s the real test: when the grid fails completely, can your exit signs still safely shepherd people out?

In this blog, let’s walk through the showdown that really matters in that moment: photoluminescent vs. electric exit signs during a total power failure - no generators, no batteries, just building and occupants depending on whatever still glows.

How Canadian Compliance Codes See Exit Signs (And Why It Matters)

Under the National Building Code of Canada (NBC), indoor exit and directional signage must remain visible for a minimum duration after power loss and meet strict brightness and placement criteria.

Requirements include:

• A specified minimum luminance level maintained during a blackout period.
• Clear, universally understood “EXIT” or Running Man symbols.
• Mounting heights that keep signs visible from standing, seated, or even lying positions (typically around 1800–2400 mm).
• Compliance with national and provincial accessibility legislation and standards like NBC, AODA, and applicable ISO guidelines.

In other words, exit signs in Canada can’t just look good under normal lighting; they must perform under stress, smoke, and confusion - precisely when electricity is least reliable.

What Really Happens When Power Goes Out?

Let’s imagine a common Canadian scenario: a winter storm hits, the grid fails, and your building loses both main power and backup supply.

1. Electric Exit Signs in a Total Failure

Standard electric exit signs rely on:

• Hardwired electrical circuits, and
• Internal batteries or a central backup system to keep LEDs lit when mains power drops.

That works - until it doesn’t. In a complete failure scenario, several weak points show up:

• If a circuit is damaged or a breaker trips, electric signs may go dark instantly.
• If backup batteries weren’t maintained, replaced, or tested, their runtime can be shorter than required or non-existent.
• Components can degrade over time, especially in areas exposed to vibration, temperature swings, or moisture.

In thick smoke or dusty environments, the focused beams of some LED units can also create glare or hotspots, making the sign harder to read from certain angles.

2. Photoluminescent Exit Signs in the Same Moment

Photoluminescent exit signs flip the script. They don’t need electricity or batteries at all. Instead, they:

• Absorb light from typical indoor illumination (fluorescent, metal halide, mercury vapour or 4000K lighting) during normal operation.
• Store that energy in special pigments.
• Release it as a uniform green glow for hours once the lights go out.

When charged for at least 60 minutes at about 54 lux (roughly 5 foot-candles) of suitable light, Ecoglo photoluminescent exit signs supplied by Tactile Solution Canada continue to glow for two hours or more, often far beyond the basic code expectations. Many photoluminescent systems can exceed 12 hours of visible performance, depending on model and conditions.

In a total power failure, that means something simple and powerful: they just keep working.

A Night-Time Story from the Stairwell

Picture a downtown high-rise in Toronto, late evening. Cleaning staff are finishing up on level 18, a couple of engineers are in the mechanical room, and a security guard is doing a routine patrol. Suddenly, the building hum drops off - then silence. Total blackout.

On one floor, older electric EXIT signs flicker and die as the overloaded backup system fails. In another stairwell, the Ecoglo photoluminescent Running Man icons along the doors and directional exit signs along the walls come alive in a calm, steady green glow.

No buzzing, no flicker, just a continuous luminous breadcrumb trail:

• Running Man exit signs at each door, visible from 50 or 75 feet, depending on the model.
• Directional signage pointing “Exit to the Right”, “Exit Down and to the Left”, or “Exit Straight Ahead and Up” so people don’t hesitate at intersections.
• A consistent glow that cuts through the dim, smoke-prone environment of a stair shaft without harsh glare.

The guard doesn’t need to think; they simply follow the glowing icons, guiding others with confidence because the path is literally written in light. In that moment, the choice of photoluminescent over electric signage stops being a design detail and becomes a life-safety decision.

Performance Face‑Off: Photoluminescent vs. Electric Exit Signs

1. Reliability in Total Power Failure

• Electric exit signs: Depend on intact wiring and healthy batteries or a generator system. Any failure in that chain can leave them dark exactly when needed most.
• Photoluminescent exit signs (like Ecoglo units from Tactile Solution Canada):
  1. Require no electricity or batteries.
  2. Continue glowing autonomously for hours after a proper charge.
  3. Remain functional even if every electrical system in the building is offline.

2. Visibility and Optics

Ecoglo photoluminescent technology is engineered for high-contrast, uniform luminance:

• Running Man icons and arrows emit a consistent green glow that’s readable from multiple angles.
• Illumination is diffused across the full sign face, avoiding hotspots or dim patches common with some LED clusters.
• Visibility ratings of 50 or 75 feet help occupants locate exits from corridors, open areas, or large lobbies.

By contrast, some electric signs can develop localized dimming as individual LEDs fail, leading to partial or patchy visibility over time if maintenance is delayed.

3. Durability and Maintenance

Photoluminescent exit and directional signs from Ecoglo are built to withstand real-world abuse:

• Abrasion-resistant surfaces hold up under high traffic and regular cleaning.
• Non-toxic, non-radioactive photoluminescent materials maintain performance over decades.
• Standard warranties of up to 25 years underscore their long-term resilience.

Electric exit signs, on the other hand, add:

• Ongoing battery replacements and disposal requirements.
• Regular testing and inspections to ensure backup systems still function.
• Potential degradation of electronic components over time due to heat, vibration, or moisture.

4. Code Compliance and Certifications

Ecoglo photoluminescent exit signage supplied by Tactile Solution Canada is designed to make compliance less of a headache:

• ULC S572 listed for photoluminescent and self-luminous exit signs.
• UL 924 performance criteria for brightness, charging time, and uniformity.
• Indoor photoluminescent exit signs suitable for Canadian NBC-mandated emergency egress applications.

While many electric exit signs can be code-compliant too, they often require additional electrical infrastructure and maintenance to remain within specifications for the life of the building.

Where Tactile Solution Canada’s Exit Products Fit In?

At Tactile Solution Canada, our role is to provide exit and wayfinding systems that don’t flinch when the power grid does.

Ecoglo Photoluminescent Exit Signs

Our Ecoglo photoluminescent exit signs feature:

• Highly visible glowing Running Man icons with directional arrows.
• Mounting options as flags, flush wall, or ceiling-mounted units so they’re visible from varied approaches.
• 50- or 75-foot rated visibility, depending on the model.
• Indoor installation with a standard 25‑year warranty, non-toxic, non-radioactive construction.

These are ideal for:

• High-rises, hospitals, schools, transit facilities, and arenas seeking dependable non-electric egress marking.

Ecoglo Directional Exit Signage

Our Ecoglo directional exit signs extend that reliability along the entire egress route:

• Clear messages such as “Exit to the Right”, “Exit Down and to the Left”, or “Exit Straight Ahead and Up” in aluminum or vinyl formats.
• High visibility in both lit and dark conditions, with a long-lasting glow in a blackout.
• Durable, abrasion-resistant construction that is easy to clean and environmentally friendly.

Used together, photoluminescent Running Man exit signs and directional signage form a coherent, code-compliant visual guidance system that remains readable even in total power failure scenarios.

FAQs: What Building Pros in Canada Ask About Photoluminescent Exit Signs

1. Will photoluminescent exit signs work in my building if we lose power at night?

Yes, provided they have received the required charging before the outage. Ecoglo photoluminescent exit signs need exposure to at least 54 lux (5 foot-candles) of suitable lighting for a minimum of 60 minutes to become fully operational and then remain visible for two hours or more, often far longer.

2. Are photoluminescent exit signs code-compliant in Canada?

Ecoglo photoluminescent exit signs distributed by Tactile Solution Canada are ULC S572 listed and meet UL 924 performance criteria, supporting compliance with NBC emergency lighting and exit signage provisions. Section 1024 of the National Building Code requires photoluminescent exit path markings and signs in many indoor applications, and these products are designed to satisfy those demands.

3. Do I need to maintain or replace anything over time?

Unlike electric exit signs, photoluminescent signs have no bulbs, batteries, or wiring to replace. Routine cleaning and ensuring adequate ambient lighting for charging are typically all that’s required, and Ecoglo products are backed by long-term warranties of up to 25 years.

4. Can I retrofit existing electric exit signage with photoluminescent products?

Yes. Ecoglo signs are available with universal mounting kits and can be surface-mounted or integrated into existing exit assemblies in many retrofit scenarios, while still supporting Canadian code compliance when installed correctly.

When the Lights Go Out, Your Signs Shouldn’t

In day-to-day operations, electric and photoluminescent exit signs may appear to perform equally well. But in the scenario that truly matters (a total power failure), they behave very differently. Electric signs depend on a fragile chain of components; photoluminescent signs are quietly charged and ready, waiting to take over when everything else stops.

Ecoglo photoluminescent exit signs and directional signage at Tactile Solution Canada are designed precisely for that moment, giving you a self-reliant, code‑compliant, and future-ready egress system you can trust when it counts most.

Ready to upgrade your building's safety? Contact our team today, and let’s light the way forward.