LED Relighting
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Electrical Services
Professional Electrical Installations
From LED relighting with subscription financing to complete electrical infrastructure. Certified expertise for all your electrical needs.
Complete Electrical Solutions
From lighting upgrades to full electrical installations, we deliver quality workmanship with flexible financing options.
Power Distribution
Complete electrical infrastructure for commercial and industrial buildings.
- Main distribution boards
- Sub-distribution panels
- Cable management
- Power factor correction
Smart Controls
Intelligent building automation and control systems for optimal energy management.
- Building automation
- Lighting controls
- Energy monitoring
- Remote management
Safety Systems
Emergency lighting, fire detection, and safety installations to protect your premises.
- Emergency lighting
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Study to Installation
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Technical Guide
How Reliable Is a Quick LED Savings Estimate?
A quick online estimate gives you a useful starting point, but it is not a lighting study. The result depends on a number of simplified assumptions that may not fully match your actual installation.
Fixture type and wattage
The calculator distinguishes between halogen, fluorescent, older LED, and mixed lighting. Each type has a different assumed wattage and a different LED replacement ratio. In practice, actual wattages vary by manufacturer, model, and age of the fixture.
Operating hours and days of use
The estimate multiplies daily operating hours by days per week. This works well for regular schedules but does not capture seasonal variation, shift patterns, or areas with motion-sensor-controlled lighting.
Electricity price
The calculator uses a user-adjustable electricity rate (default: €0.32/kWh). Your actual rate may include peak/off-peak differences, demand charges, or contract-specific pricing that changes the real cost.
Fixture density and area-based estimates
When using the area-based input, the calculator estimates the number of fixtures from the floor area and building type. Office spaces assume roughly 1 fixture per 6 m², retail 1 per 4 m², warehouse 1 per 10 m². Actual fixture counts depend on ceiling height, layout, and lighting design requirements.
A preliminary online estimate is indicative. It does not replace a professional lighting audit based on the actual installed fixtures and site conditions.
LED Relighting Subscription
Upgrade to premium LED lighting with no upfront investment. One monthly fee covers everything—equipment, installation, and maintenance.
Relighting-as-a-Service
Upgrade Your Lighting Without Upfront Cost
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Your Current Setup
Results
Current Monthly Energy Cost
€125/month
New Monthly Energy Cost
€45/month
savings
€80/month
Upfront investment (HTVA)
€4,000–€7,500
Payback period
4.2–7.8 years
Based on estimated savings of €80/month.
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Transparency
What This Estimate Is Based On
The calculator on this page uses a simplified model. Here is what drives the numbers:
- 1
Current energy consumption is calculated from the number of fixtures, their individual wattage, operating hours per day, days per week (converted to monthly hours using a 4.33-week factor), and the electricity rate.
- 2
LED replacement wattage is derived from the current wattage multiplied by a ratio that depends on the lighting type: halogen ×0.14, fluorescent ×0.35, older LED ×0.65, mixed ×0.25. Premium LED adds roughly 10% to the replacement wattage.
- 3
Monthly energy savings are the difference between the current and new monthly electricity costs.
- 4
Investment costs are estimated at €80–€150 per fixture (adjusted by building type and premium LED selection). These are indicative ranges—actual project costs depend on fixture specification, quantities, and installation complexity.
- 5
Payback period divides the net investment by annual energy savings. The lease/subscription option spreads the investment into predictable monthly payments using standard financial coefficients.
Because each assumption introduces a margin of uncertainty, the combined result can deviate from reality. The estimate is most useful as a conversation starter, not as a project budget.
Important Caveats
When This Quick Estimate Is Less Reliable
Certain situations make a simplified estimate less representative. If any of the following apply, the result should be interpreted with extra caution:
Mixed fixture types across different areas: the calculator applies one lighting type and wattage to all fixtures, which averages out real differences.
Irregular use schedules: spaces that operate only seasonally, on shifts, or with heavy weekend use will not match a fixed hours-per-day model.
Buildings with existing controls, sensors, or automation: if occupancy sensors or daylight dimming already reduce lighting hours, the baseline consumption is lower than the calculator assumes.
Partial replacement projects: replacing only some fixtures changes the cost/benefit balance in ways the calculator does not model.
Atypical ceiling heights, layouts, or lux requirements: high-bay warehouses, display lighting, or spaces with specific illumination standards may need different LED solutions than assumed.
When a site survey is needed: for accurate fixture counts, wattage verification, and layout-specific design, a professional lighting audit is required.
Illustrative Scenarios
Two Indicative Examples
The following are fictional scenarios intended to show how different building characteristics influence the estimate. They are not based on real projects.
Scenario A: Office with regular operating hours
A 300 m² office space with 50 fluorescent fixtures (36 W each), operating 10 hours per day, 5 days per week, at €0.32/kWh.
Analysis:
Fluorescent-to-LED conversion has a favorable replacement ratio (0.35), resulting in a significant wattage reduction. With regular, predictable operating hours, the savings estimate is relatively stable. The estimate looks favorable in this configuration.
Next step:
The next step would be a site visit to verify actual fixture types and counts, confirm operating hours, and assess whether the existing wiring and controls are compatible with the LED replacement plan.
Scenario B: Warehouse with extended operating hours
A 1,000 m² warehouse with mixed lighting (estimated 40 W average), operating 16 hours per day, 6 days per week.
Analysis:
Extended operating hours amplify both the current cost and the potential savings. However, the ‘mixed’ lighting type uses an averaged replacement ratio, which may over- or underestimate the actual LED wattage needed. High-bay fixtures may also require different LED solutions than the default assumption.
Next step:
A detailed fixture inventory is recommended: different zones may have different lighting types, heights, and lux requirements. A professional audit would produce a more accurate project scope and cost estimate.
Honest Assessment
A Fast Estimate Is Useful, but It Is Not a Lighting Study
A responsible approach to LED relighting means recognizing the limits of a simplified calculator.
A quick calculator is a starting point. It highlights the general direction of potential savings and helps decide whether a deeper analysis is worthwhile.
Real replacement decisions should account for the actual fixture inventory, usage patterns, lighting distribution, control systems, and installation constraints.
In some projects, replacing all fixtures at once is practical. In others, a phased approach—starting with the highest-impact areas—may be more realistic.
The goal is a realistic project assessment, not an inflated savings promise.
If the preliminary estimate raises questions, that is a useful signal. A professional lighting audit will clarify the actual scope, costs, and expected outcomes for your specific building.
Solar Panel Calculator
Solar Panel Calculator
Estimate your solar panel installation costs, annual production, and payback period.
System Configuration
6 kWp
Typical range in Belgium: 850–1,050 kWh/kWp/year.
Results
Upfront investment (HTVA)
€25,800
Annual production
5,100 kWh
Estimated annual savings
€1,632/year
Payback period
15.8 years
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EV Charger Calculator
EV Charger Calculator
Estimate installation costs for electric vehicle charging stations by power level.
Charger Configuration
Results
Upfront investment (HTVA)
€1,800 – €3,500
Final scope (cabling, protections, and mounting) is confirmed after a site visit.
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