For most factories and warehouses, lighting runs 12–24 hours a day across huge
floor areas — making it one of the biggest and most controllable parts of the
electricity bill. The good news: cutting lighting costs doesn’t mean working in
the dark. With the right LED strategy, you can slash energy use by 50–70% while
actually improving visibility and safety. Here’s how.
1. Switch from Old HID/Metal Halide to LED High Bays
If your facility still runs metal halide, sodium, or mercury vapour high bays,
this is your single biggest saving. LEDs deliver the same brightness for less than
half the power — a 400W metal halide is typically replaced by a 120–150W LED high
bay. Across dozens of fixtures running all day, this alone can cut lighting energy
by 60% or more, with payback often within 1.5–3 years.
2. Choose High Efficacy (lm/W), Not Just Low Wattage
Not all LEDs are equal. Efficacy — lumens per watt — decides how much light you
get per unit of power. Budget LEDs sit around 100–120 lm/W; premium fixtures reach
up to 160 lm/W. Over thousands of operating hours, that difference compounds into
significant savings. Always compare lm/W, not just the wattage on the box.
3. Add Smart Controls & Motion Sensors
Why light an empty aisle at full power? Occupancy sensors dim or switch off
lights in unused zones, while daylight sensors reduce output near skylights. In a
large warehouse with intermittent activity, smart controls can add another 20–40%
saving on top of the LED upgrade.
4. Light for the Task, Zone by Zone
Over-lighting wastes money; under-lighting risks safety. Match light levels
(lux) to each area — general storage needs less, packing and assembly need more.
Zoning your lighting means you spend energy only where precision is required.
5. Don’t Forget Maintenance Savings
LEDs last 50,000+ hours versus ~10,000 for metal halide — and they don’t need
ballast replacements. On high ceilings, where every fixture change means hiring
access equipment, this dramatically cuts maintenance labour and downtime. The real
saving is energy plus maintenance.
Quick Win Checklist
- Audit current fixtures, wattages, and run-hours
- Replace HID with high-efficacy (130+ lm/W) LED high bays
- Add occupancy and daylight sensors
- Zone lighting to match tasks
- Insist on BIS, LM-79, LM-80 certified products
Conclusion
Factory and warehouse lighting is one of the easiest places to cut costs with a
fast, measurable return. A well-planned LED upgrade — with smart controls and the
right efficacy — can reduce lighting energy by up to 70% while improving safety and
slashing maintenance. Reway’s
industrial LED range (ULTRABAY, BAYLITE, ORBIT) is built for exactly this.
