You calculate the ROI of an LED lighting investment by dividing the total investment by the annual savings on energy, maintenance, and labor. In the industrial sector, the payback period is typically between two and five years, after which the savings directly contribute to the company's profits. This article answers the most important questions you need to make a well-founded calculation.
What costs are included in an LED lighting investment?
Many people immediately think of the price of the fixtures when considering an LED investment—and that's true, but it's far from the whole story. For a correct ROI calculation, you need to include all direct and indirect costs: from the fixtures themselves to installation costs, wiring, any adjustments to the electrical infrastructure, and engineering costs for a professional lighting design.
The following cost items belong in your total investment:
- Fittings and components the purchase price of the LED fixtures including drivers and mounting hardware
- Installation and labor: assembly, wiring, and commissioning by certified installers
- Engineering and lighting design: calculations, lighting plans, and technical specifications
- Infrastructure Adjustments adjustments to masts, switch cabinets, or power lines
- Disassembly of old lighting: removal and disposal of conventional fixtures
Anyone who only looks at the fixture price underestimates the investment. At the same time, many organizations also underestimate the savings that offset these costs. A complete picture of both sides is the basis of a reliable LED lighting calculation.
Calculating energy savings: here's how to do it
Multiply the wattage difference by the annual burning hours and the energy price per kilowatt-hour—that's the core of the calculation. LED fixtures typically consume 50 to 70 percent less energy than traditional high-pressure sodium or halogen fixtures with comparable light output.
A practical calculation example makes this concrete. Suppose you replace 50 conventional 400-watt fixtures with 150-watt LED fixtures, at a company that operates 4,000 hours per year and has an energy price of 0.25 euros per kWh:
- Power difference per fixture: 400 W minus 150 W = 250 W savings
- Annual savings per fixture: 250 W x 4,000 hours = 1,000 kWh
- Total savings 50 fixtures: 50 x 1,000 kWh = 50,000 kWh per year
- Financial savings: 50,000 kWh x 0.25 euros = 12,500 euros per year
Please note that the actual savings depend on the specific fixtures, lumen output, and optic quality. A higher lumen output per watt, expressed in lumens per watt (lm/W), means you achieve the same or better illumination with less power.
What is a realistic payback period for industrial LED lighting?
For industrial applications, the payback period for LED lighting typically ranges between two and five years. This depends on the number of operating hours, energy tariffs, the scale of the installation, and the extent to which subsidies or tax incentives are utilized. With intensive use, such as 24/7 operations in ports, terminals, or production halls, the payback period can even be less than two years.
The payback period is calculated using the following formula:
Payback period = Total investment / Annual total savings
The annual savings do not only consist of energy costs. Maintenance, lamp replacement, and downtime costs also play a role. The higher the total annual savings, the shorter the payback period. In sectors such as heavy industry, where lighting is continuously on under harsh conditions, the savings are correspondingly greater.
What savings outside of energy costs affect the ROI?
Besides energy savings, several cost reductions positively influence the ROI of LED lighting. Maintenance is often the biggest hidden cost with conventional lighting. Traditional lamps have a shorter lifespan and require regular replacement, sometimes in hard-to-reach locations with associated labor, aerial work platforms, and downtime.
High-quality LED fixtures have a lifespan of 50,000 hours or more, drastically reducing maintenance frequency. In practice, this means:
- Less lamp replacement: lower material costs and less labor for maintenance
- Less downtime: fewer production stops due to faulty lighting or planned maintenance
- Better visibility and safety: Better lighting reduces errors, incidents, and associated costs.
- Lower cooling costs: LEDs produce less heat, which lowers the cooling load in climate-controlled spaces.
These indirect savings are harder to quantify, but can significantly improve ROI. In industries where downtime is costly, such as Ports and terminals, because these items weigh heavily in the total calculation.
How do you incorporate subsidies and tax breaks into an ROI calculation?
Subsidies and tax incentives reduce the net investment and thus directly shorten the payback period. In the Netherlands, several schemes may apply to LED lighting investments in industry, including the Energy Investment Allowance (EIA), the Environmental Investment Allowance (MIA), and the Random Depreciation for Environmental Investments (VAMIL).
With the Energy Investment Allowance, you can deduct an additional percentage of the investment from your taxable profit, on top of normal depreciation. This lowers your taxable profit and therefore the effective investment. The exact percentages are determined annually by the government.
For the ROI calculation, process subsidies as follows:
- Determine the gross investment including all cost items
- Deduct direct grant income (if applicable)
- Calculate the tax benefit of EIA or MIA based on your tax rate
- Use the net investment as a starting point for the payback period calculation
Allow yourself to be supported by a specialist, as the applicability of regulations depends on the type of fixture, energy performance, and the specific situation of your organization.
When is the ROI of LED lighting highest?
The ROI of LED lighting is highest when the current installation is energy-inefficient, has long operating hours, and incurs substantial maintenance costs. The greater the difference between the old and new situation, the faster the investment pays for itself. Industrial environments with continuous operations and high energy prices benefit the most.
Concrete situations where the ROI is excellent are:
- Replacement of outdated high-pressure sodium or mercury vapor lighting with high power
- Installations with more than 3,000 operating hours per year
- Locations with high maintenance costs due to difficult accessibility, such as crane lighting or high-mounted fixtures
- Environments where reliability is critical, so that downtime costs due to faulty lighting are eliminated
- Projects where subsidies and tax deductions are fully utilized
The choice of the right fixture also plays a role. A fixture that provides precisely the required light without over-illuminating saves power without compromising safety or visibility.
Examples from practice: DFDS Terminal Lighting
A good example of how the ROI calculation works in practice is the project at DFDS, a large ferry and logistics terminal. The challenge here was multifaceted: the lighting had to withstand salty sea air and varying weather conditions, while operations at the terminal continue 24/7. Downtime for maintenance or replacement of fixtures is directly felt in the operational costs at such a location.
The design choices were therefore aimed at maximum lifespan and minimal maintenance intervals. Luminaires with a high IP rating and corrosion-resistant housings were chosen, so that the installation could function for years without intervention. The long operating hours—a terminal like this runs continuously—ensured that the energy savings of LED quickly translated into financial benefits. As a result, the payback period was considerably shorter than the industry average of two to five years.
The lesson learned from this project directly relates to the topic of this article: the ROI of LED lighting is determined not only by energy savings but also by the drastic reduction in maintenance costs and downtime risks. Especially in locations with high operational demands, these are the factors that make the difference. More practical examples can be found at projects page.
How JEL Products Helps Calculate the ROI of LED Lighting
JEL Products helps industrial organizations perform a comprehensive and reliable ROI calculation for LED lighting. This process doesn’t start with a quote, but with a thorough analysis of the current situation: what types of fixtures are in use, how many operating hours are recorded, what are the energy costs, and what maintenance costs are involved?
Based on that analysis, JEL Products offers:
- A professional lighting design tailored to the specific environment and standards
- Understanding applicable subsidies and tax regulations such as the EIA
- A transparent calculation of the payback period and total return
- Advice on luminaire selection for extreme conditions, such as high temperatures, corrosion, or explosion hazards
- Guidance from engineering to installation and commissioning
Whether it’s outdoor lighting, workshop lighting, or specialized solutions for harsh industrial environments, JEL Products works with you every step of the way—from the initial calculations to final delivery. Get in touch for a no-obligation chat about the ROI of your lighting investment.