The Challenge
This SME occupied office premises of approximately 400 m², including an open space, private offices, meeting room, corridors, and restrooms. The existing installation relied on energy-hungry equipment (fluorescent tubes, halogen bulbs) with no automated control system.
The Domo-Smart Solution
Domo-Smart proposed a three-pronged approach combining relamping, automation, and scheduled control, with a focus on rapid impact and a controlled return on investment.
1. Systematic Replacement with LED Fixtures
All existing fixtures were replaced with high-efficiency LED equipment, selected for their durability and compatibility with detection systems.
- Immediate 50% to 70% reduction in energy consumption per light point.
- Significant reduction in maintenance operations thanks to a lifespan up to 10 times longer than traditional neon lights.
- Improved visual comfort and light quality in workspaces.
2. Implementation of Automation via Motion and Light Sensors
Passive infrared (PIR) motion sensors were installed in all intermittently used areas: corridors, restrooms, and private offices.
- Lights activate only when motion is detected, with a set switch-off delay after the area is vacated.
- In the open space, natural light sensors were integrated to automatically adjust artificial lighting intensity according to daylight input (principle of daylight harvesting).
- This automation optimizes energy use while maintaining consistent comfort levels.
3. Time Scheduling and Usage Scenarios
A simple, robust control system was installed, based on a proven protocol (Zigbee or KNX Easy) to ensure centralized management.
- Automatic switch-off of all lighting at 8:00 p.m. daily, preventing end-of-day forgetfulness.
- Definition of specific scenarios according to needs: "meeting", "cleaning", "standby", adapting lighting levels to each situation.
- This setup allows flexible management of equipment while minimizing energy waste.
The Results
- Lighting bill reduced by ~35% monthly, from ~250,000 FCFA to ~162,500 FCFA.
- Estimated annual savings: ~1,050,000 FCFA.
- Total investment cost (equipment, installation, consulting): 2,800,000 FCFA.
- Return on Investment (ROI): estimated at around 2.6 years.
- Improved lighting comfort for employees (quality, uniformity, color temperature).
- Significant decrease in maintenance interventions (longer LED lifespan, increased reliability).
- Optimized energy usage through automated lighting management (motion, daylight, scheduled switch-off).
- Enhanced company image as a modern, energy-conscious player.