High Bay & Warehouse Lighting in Singapore: What to Know Before You Buy

Quick answer: The two things that decide which high bay light you need are your ceiling height and how the space is used (bulk storage, active work area, or general circulation). This guide walks through both, plus the difference between the two fixture types we carry, so you know what to ask for and can size the installation with confidence.

1. Why warehouses and factories need a different kind of light

A standard panel or downlight is designed to sit close to where people work — a desk, a shelf, a counter. In a commercial space with a high ceiling, that same fixture mounted well above head height spreads its light too wide before it reaches the floor, and because light intensity falls off sharply with distance, the work plane below ends up dim even though the fixture looks bright enough up close. High bay lights are engineered around this problem: a narrower, more concentrated beam angle keeps the light from scattering too early, and higher output compensates for the extra distance the light has to travel before it lands on the floor — which is exactly why these fixtures are built to be mounted well above the work plane rather than close to it.

Singapore’s Workplace Safety and Health (WSH) Act requires employers to provide adequate lighting in all work areas, and the WSH (General Provisions) Regulations specifically cover lighting among other workplace conditions — first-time non-compliance can carry a fine of up to S$50,000. In a warehouse specifically, this isn’t just a paperwork requirement: dim lighting around racking, loading bays and forklift paths is a genuine trip-and-collision risk, which is part of why the regulation singles lighting out rather than leaving it to general good practice. Cross-checked via workplacesafety.sg and industry sources, 1 Sep 2026 — not the official Act text; check mom.gov.sg for the current wording before treating this as a compliance reference.

The detailed illumination levels for different work areas sit in a separate operating standard, SS 531 (Code of Practice for Lighting of Work Places), published by Enterprise Singapore. This is a paid standard — we could only access a preview, not the full text, so any specific lux figures below are third-party summaries, not a screenshot of the original document. Treat this section as background, not a compliance checklist for your specific site.

2. A rough sense of how much light different areas need

These figures are cited by multiple industry sources as reflecting SS 531, but none of them are the official document itself — use them as a general reference point when talking to your electrician or lighting supplier, not as a number to design against on your own.

The pattern behind these figures is fairly intuitive once you see it: the finer the visual task, the more lux it calls for. A general walkway only needs enough light to move around safely, while precision or detailed assembly work needs enough brightness and contrast for someone to catch a small defect or read a fine marking. Emergency escape lighting sits in a category of its own — it’s a life-safety backup rather than a working-comfort figure, which is why it’s specified as a floor-level minimum paired with a guaranteed backup-power window, rather than a lux target for getting work done.

For comparison, the US IES RP-7-21 standard is sometimes cited for bulk storage areas (20–30 footcandles) and picking/packing areas (30–50 footcandles). This is a US standard, not a Singapore one — mentioned here only because it’s a commonly referenced industry benchmark. Don’t treat it as what Singapore requires. Cross-checked, 1 Sep 2026.

Our recommendation: if you need a number to design a specific site around, ask a lighting professional to do a proper assessment rather than working backward from any of the figures above — none of them have been verified against the SS 531 original text, and your specific ceiling height, reflectance and layout all change the real answer.

3. Roughly matching wattage to ceiling height

Industry sources commonly describe mounting a high bay fixture at around 60% of the ceiling height (for example, a 9-metre ceiling would put the fixture at roughly 5.5 metres) as a starting rule of thumb, with wattage scaling up as the ceiling gets higher — very roughly, lower-height spaces (around 4–6 m) sit at the lower end of the wattage range, while much taller spaces (12–18 m and up) call for higher output paired with a narrower beam angle. Cross-checked via international lighting-manufacturer sources (not Singapore-specific), 1 Sep 2026. The logic follows the same physics as section 1: light intensity drops off with distance, so a fixture mounted further from the floor needs more raw output — and often a narrower beam angle to keep that output concentrated — to deliver the same brightness at floor level that a lower-mounted fixture could achieve with less power.

This is a general shape, not a formula to plug your ceiling height into — the wattage that’s right for a given height also depends on how reflective your walls and floor are, how far apart your fixtures are spaced, and what the space is used for. Our high bay lighting range currently covers 100W, 150W and 200W; whether that’s the right output for your ceiling height is exactly the kind of thing to check with our team before ordering — if your site needs more than that, we’ll tell you directly rather than stretching a spec.

Lighting designers also use a concept called the “spacing criterion” to keep light even across a floor rather than leaving bright and dim patches — in short, fixtures generally shouldn’t be spaced further apart than a multiple of the mounting height. The reason this matters in practice: uneven spacing leaves alternating bright and dim bands across the floor, which is more than a cosmetic issue in a warehouse — dim patches along an aisle or near racking make it harder to spot obstacles and read labels, and forcing fixtures closer together than necessary just to compensate wastes energy without actually fixing the unevenness. You don’t need to calculate this yourself; it’s worth knowing the term exists so you can ask a supplier or designer whether it’s been considered for your layout.

4. Two fixture types, two different situations

We carry two high bay ranges, and they suit different jobs rather than one being “better” than the other:

UFO high bay — a compact, round fixture (100W / 150W / 200W) with a published IP65 rating, 90° beam angle and 135 lm/W efficacy. IP65 means the fixture is sealed against dust ingress and low-pressure water jets, which is worth having in a warehouse where dust settles on fittings over time or where fixtures sit near loading bay doors exposed to the weather. The 135 lm/W efficacy figure measures light output per watt of electricity drawn — the higher this number, the more light you get for the same running cost, which adds up when a facility runs its lighting for long hours every day. The compact shape makes it a common choice for retrofitting into an existing high bay fixture position, and its wider 90° beam angle spreads light over a broader floor area at a given mounting height, which is part of why it’s the range typically considered at the lower end of high-ceiling spaces.

Standard high bay — our other range (also 100W / 150W / 200W), rated for a 25,000-hour lifespan with a 0.9 power factor. A long rated lifespan matters more here than in most other lighting applications — changing a fixture mounted several metres up usually means scaffolding or a lift, so fewer replacement cycles over the fixture’s working life is a genuine operational saving, not just a spec sheet number. Power factor measures how efficiently a fixture uses the electrical supply relative to the apparent power it draws; a rating close to the maximum (like this range’s 0.9) means less wasted capacity on the circuit, which is worth knowing if a facility already runs a lot of other equipment off the same supply. Both ranges are built for warehouses, factories, workshops and high-ceiling commercial spaces, and both are available in 3000K, 4000K or 6500K colour temperature — cooler options (4000K–6500K) tend to suit active work areas where visual alertness matters most, while warmer 3000K is sometimes chosen for lower-traffic storage zones.

This is where a site assessment adds more value than a spec sheet: neither range publishes a specific throw distance or coverage radius, so the most reliable way to know how much floor area one fixture will actually cover at your ceiling height is a conversation with our team about your specific space.

Not sure which one fits? Browse the range or get in touch — tell us your ceiling height, floor area and what the space is used for, and we’ll point you to a sensible starting option. You’re also welcome to visit any of our five showrooms to see the fixture sizes in person before deciding.

5. Where a proper assessment beats a rule of thumb

• Exactly how many fixtures your warehouse needs comes from a photometric layout, which depends on your specific dimensions, reflectance and layout — that’s a proper lighting design exercise, and it’s best worked out with our team rather than from a general guide like this one.
• The SS 531 lux figures in section 2 are third-party summaries, not the official standard text (it’s a paid publication we’ve only been able to preview) — treat them as a starting conversation with a lighting professional, not a spec to design against on your own.
• Our current range covers up to 200W. If your project genuinely needs more output than that, our team will advise you directly and point you toward a suitable option, rather than stretching a product description to fit.

Have a floor plan for your warehouse or factory? Share it with us — our light specialist will review your layout and come back with a detailed assessment of what your space needs, including how many fittings we’d recommend and where they should go. It’s the fastest way to turn the rules of thumb above into a plan you can actually order against.

6. What to browse next

• High bay lights — UFO and standard ranges, 100W–200W, for warehouses, factories and high-ceiling commercial spaces
• Browse all commercial lighting — for offices, floodlighting and other commercial fixture types

Planning a bulk or project order? Trade and bulk enquiries — tell us your project scope and we’ll get back to you. Need it fitted as well? Request an installation quote and our team will confirm what’s needed before any work starts.

FAQ

How high does my ceiling need to be before I need a high bay light instead of a regular panel light?
There’s no single official cut-off — it’s a judgement based on how far the light has to travel to reach the floor and how the space is used. Confirm with a lighting professional for your specific space.

What wattage high bay light do I need?
It depends on your ceiling height, floor area and how the space is used — there’s no single number that fits every warehouse. See section 3 above, and talk to our team if you want a starting recommendation rather than a guess.

Is there a Singapore standard for warehouse lighting levels?
Yes — SS 531, published by Enterprise Singapore, covers workplace lighting including industrial areas. It’s a paid standard, so this guide uses third-party summaries of its commonly cited figures rather than the original text (see section 2) — treat them as a reference point, not a guarantee of compliance.

What’s the difference between UFO and standard high bay lights?
Both come in 100W/150W/200W and suit similar spaces. The UFO range has a published IP65 rating and compact round shape, which tends to make it a fit for retrofits. See section 4 for details on both.

Written by the Lighting Hub team. Last updated: 3 September 2026