Lighting is one of the most critical systems in any manufacturing or industrial facility. It affects worker safety, production quality, energy costs, and code compliance. Upgrading an existing plant or specifying a new facility presents the same core challenge: matching the right fixtures to the environment, the work task, and the maintenance reality. This guide covers what contractors and facility managers need to know to make the right choices and avoid common mistakes.
Why Lighting Matters in Industrial Environments
Industrial and manufacturing spaces operate for long hours, often under harsh conditions. Lighting needs to be durable, efficient, and dependable. Switching to LED high bay lighting delivers measurable benefits across every industrial environment:
- Improved visibility and safety: Bright, uniform light helps prevent accidents around machinery and moving equipment.
- Better quality control: High color accuracy makes it easier to spot defects during production or inspection.
- Lower operating costs: LED fixtures can reduce energy use by 50 to 70% compared to older high-intensity discharge (HID) systems.
- Reduced maintenance: Long lifespans mean fewer relamps and less downtime for service lifts or scissor lifts.
- Increased productivity: Proper lighting supports worker comfort and focus, especially for multi-shift operations.
Pro Tip: Replacing HID fixtures with LED high bays can yield full payback in under three years in most industrial facilities, once utility rebates and reduced maintenance costs are factored in.
Key Factors to Consider Before Upgrading
Before selecting fixtures for a plant or industrial space, work through these questions:
- What type of work happens in each area? Assembly lines, machining cells, and inspection areas all have different lighting needs.
- How harsh is the environment? Heat, moisture, vibration, or chemicals will determine what fixture ratings are required.
- Are maintenance and access a challenge? Fixtures over production lines or equipment should have long lifespans and field-replaceable drivers to minimize downtime.
- Are there specific safety or compliance requirements? Certain areas may require UL844, NSF, or hazardous location listings to meet code.
- What energy-saving goals or rebates are available? Many utilities offer rebates for DLC-listed LED fixtures and advanced controls.
Documenting these items before you start shopping helps you choose fixtures that perform well for years and qualify for available incentives.
Common Areas in Industrial Facilities
Each area in a manufacturing plant has its own lighting challenges. Below are the most common environments and the fixtures that work best in each.
Production Areas
Manufacturing and assembly floors demand bright, uniform lighting with minimal glare. Fixtures must handle long operating hours at elevated mounting heights and tolerate the vibration that comes with active machinery. For most production bays with ceiling heights of 15 feet or above, LED high bays are the go-to solution.
Recommended fixtures:
Tips:
- Choose 4000K to 5000K color temperature for bright, neutral light on the production floor.
- Target 50 to 100 foot-candles depending on the precision of work performed, consistent with IES RP-7 recommendations for industrial interiors.
- For metalworking, finishing, or inspection areas, select fixtures with high CRI (80 or above) for accurate color rendering.
Top LED High Bay Fixtures for Industrial Facilities
800
Browse all High Bay Lighting
Maintenance and Utility Rooms
Smaller rooms used for maintenance, compressors, electrical panels, or utilities benefit from simple, durable lighting that needs minimal attention. Surface-mount fixtures work well in these lower-ceiling spaces, and adding occupancy controls makes them nearly set-it-and-forget-it.
Recommended fixtures:
Tips:
- Use occupancy sensors to save energy in rooms with intermittent use. These spaces often run dark for hours at a time.
- Select IP65 or higher rated fixtures where moisture, steam, or dust is present.
Washdown and Sanitation Areas
Food and beverage processing lines, bottling areas, and sanitation rooms require sealed fixtures that can withstand high-pressure washdown cycles and chemical cleaning agents. NSF listing and smooth, crevice-free housings are required in most food-zone environments. Standard industrial fixtures will fail quickly in these conditions.
Recommended fixtures:
Tips:
- Look for IP66 to IP69K rated fixtures for the highest level of ingress protection in active washdown environments.
- Avoid glass lenses; use shatter-resistant materials that comply with food-zone safety requirements.
- Choose smooth housings with no ledges or crevices that trap debris or standing water.
Vapor Tight and Wet-Location High Bay Lights
799
Browse all Vapor Tight High Bays
Hazardous or Classified Locations
Facilities handling chemicals, paints, solvents, or combustible dusts may have areas classified under the National Electrical Code as Class I, II, or III locations. These environments require fixtures with specific UL or FM listings designed to contain any potential ignition source. Do not substitute a standard industrial fixture in a classified area. For full classification requirements, refer to NFPA 70 (the National Electrical Code).
Recommended fixtures:
Tips:
- Confirm the correct Class, Division, and Group for each hazardous location before purchasing any fixture.
- Use corrosion-resistant hardware and conduit seals at all junction points.
- Choose fixtures with accessible driver compartments for quick service without compromising the enclosure rating.
Explosion Proof and Hazardous Location Lighting
774
Browse all Explosion Proof Lighting
Outdoor and Security Lighting
Exterior lighting helps workers move safely between buildings and improves perimeter visibility for security. Loading docks, truck courts, and facility entry points all benefit from consistent, reliable light after dark. Loading dock bays specifically benefit from dock lights mounted at each door for safe trailer loading and unloading. For the perimeter and grounds, wet-listed fixtures with surge protection are essential.
Recommended fixtures:
Tips:
- Choose fixtures with surge protection and corrosion-resistant finishes for outdoor industrial environments.
- Use photocells or dusk-to-dawn controls to eliminate waste during daylight hours.
- Add motion sensors in low-traffic perimeter areas for additional savings without sacrificing safety.
Egress and Emergency Lighting
Code compliance and worker safety require that exit routes remain illuminated at all times, including during power failures. OSHA 1910.37 and local fire codes specify illumination levels and testing requirements for egress paths in industrial facilities. Plan your emergency lighting alongside the primary fixture upgrade, not as an afterthought once the project is nearly done.
Recommended fixtures:
Tips:
- Verify battery runtime and self-testing features before specifying, especially for large facilities with long egress paths.
- Consider remote heads where a single unit cannot illuminate an entire egress corridor.
- Maintain clear visibility of all exit signage at all times, including during any construction or retrofit phases.
Common Mistakes to Avoid in Industrial Lighting Projects
Even experienced contractors run into problems when upgrading plant lighting. These pitfalls are worth reviewing before finalizing a fixture schedule:
- Ignoring environment ratings: Installing standard fixtures in hot, wet, or corrosive areas shortens lifespan drastically and can void warranties outright.
- Underestimating glare: Replacing old high bays with very high-output LEDs without diffusers can create harsh, uncomfortable conditions on the floor below. Verify the fixture's glare rating and beam angle before ordering.
- Skipping layout verification: One-for-one replacements can leave shadows or over-lit zones if ceiling heights, task types, or floor layouts have changed since the original installation.
- Choosing non-DLC fixtures: Many utility rebates require DesignLights Consortium (DLC) listing. Unlisted products can disqualify entire projects from incentive programs.
- Forgetting about controls: Upgrading the fixtures but leaving old manual switches in place misses major savings potential. Occupancy sensors alone can cut lighting energy use by 20 to 30% in areas with variable occupancy.
ROI Insight: Pairing LED high bays with occupancy sensors typically adds another 20 to 30% in energy savings on top of the fixture upgrade, often with minimal additional cost. Many utility rebate programs cover sensors alongside the fixtures.
Lighting Controls and Energy Efficiency
Smart controls are now standard in most industrial lighting upgrades. They help maximize energy savings and fine-tune performance by area without requiring a full building automation system. Even a basic control strategy can meaningfully reduce your operating costs.
Effective control types for industrial facilities include:
- Occupancy sensors in low-traffic or intermittent areas such as storage rooms, stairwells, and utility corridors.
- Daylight sensors near windows, skylights, or loading doors where natural light varies significantly through the day.
- Time-based scheduling to align lighting operation with shift schedules or plant shutdowns.
- Dimming controls to fine-tune brightness by area or task type without adding separate circuits.
- Networked lighting systems that provide monitoring and remote adjustment, particularly valuable for multi-building industrial campuses.
Start with a simple approach if your site has older wiring. Even standalone occupancy sensors deliver immediate, measurable savings with no IT infrastructure required.
Planning a Lighting Upgrade
When preparing for a retrofit or new-construction lighting project, work through these steps before finalizing a fixture schedule:
- Audit existing conditions: Record fixture types, wattages, mounting heights, and zone controls for every area in the facility.
- Identify problem areas: Look for poor visibility, flickering, color inconsistency, or excessive glare that affects work quality or safety.
- Determine environment ratings: Match fixture specifications to the specific heat, humidity, or chemical exposure in each zone.
- Establish target light levels: Aim for safe, comfortable foot-candle levels based on the specific work tasks performed in each area.
- Evaluate total cost of ownership: Compare initial cost, energy consumption, maintenance frequency, and rebate eligibility across competing options, not just the fixture price.
- Plan control integration: Identify where occupancy sensing, daylight harvesting, or time-scheduling can deliver additional savings in your layout.
- Verify compliance: Confirm that emergency lighting, hazardous area ratings, and any required NSF or UL listings are addressed before placing an order.
- Work with RelightDepot: Our team can verify your fixture selections, assist with value engineering, and help identify rebate opportunities for your region.
For facilities that combine industrial production with warehousing or distribution, see our Warehouse Lighting guide for fixture recommendations tailored to racking aisles, dock areas, and mixed-use industrial spaces.
Long-Term Maintenance and Performance
The right lighting system should run for years with minimal intervention. To protect performance over the long term:
- Keep lenses and reflectors clean. A buildup of dust or grease on a lens can reduce delivered light levels by 10 to 20% over time.
- Record fixture models and driver types for every zone so replacements are quick and you avoid compatibility issues.
- Schedule periodic inspections to verify that controls, photocells, and battery backup systems are functioning correctly.
- Use surge protectors in high-load or outdoor areas to prevent driver damage from electrical transients, especially near heavy machinery.
RelightDepot offers a broad selection of commercial and industrial LED high bays and specialty fixtures built for long service life and low maintenance overhead.
Why Work with RelightDepot
Industrial lighting is more than finding the brightest fixture. It's about matching the product to the environment, the task, and the budget, and getting the project done without delays or costly substitutions. RelightDepot provides:
- A broad catalog of commercial and industrial LED fixtures from vetted manufacturers, including high bays, specialty, and controls.
- Value engineering support to find cost-effective alternatives to specified fixtures without sacrificing performance.
- Expert assistance from our sales team for planning, photometric layouts, and rebate guidance on larger projects.
- Fast project quotes and factory-direct shipping to your job site to keep your project on schedule.
Our goal is to simplify the process, lower your costs, and keep your projects moving.
Ready to upgrade your facility? Contact our team, call us at 888-548-6387, or email [email protected]. We'll help you build a fixture schedule that works for your environment and your budget.
