OVERVIEW
This commercial lighting upgrade in Singapore transformed the Gateway East and West lobbies using high-efficacy Agranergy LED downlights. The existing fixtures were failing frequently and delivered only around 200 lux at floor level.
Instead of a like-for-like replacement, the lighting layout was redesigned. This reduced the number of fixtures from 10 to six per row while increasing illumination to approximately 800 lux.
Results
4× Higher Illumination
Illuminance increased from approximately 200 to 800 lux.
40% Fewer Fixtures
The number of downlights was reduced from 10 to six per row.
Cleaner Ceiling Layout
Fewer fixtures created a less cluttered and more premium appearance.
Greater Energy Efficiency
At an equivalent 200-lux output, the upgraded system offers approximately 75% energy-saving potential.
The Challenge: Inefficient and High Maintenance Lighting
The existing lighting system presented several challenges:
- Frequent downlight failures
- Insufficient lobby illumination
- Too many fixtures across the ceiling
- Inefficient use of lighting energy
- Need to maintain a premium lobby appearance
The Solution
Agranergy approached the project as a complete lighting redesign rather than a straightforward replacement of the existing downlights.
High-efficacy downlights were selected to deliver greater light output from fewer fixtures. The lighting arrangement was redesigned to improve illumination across the lobby while creating a cleaner and less cluttered ceiling.
The solution focused on:
- Selecting higher-efficacy downlights
- Reviewing the existing fixture arrangement
- Optimising fixture quantities and spacing
- Reducing the number of downlights per row
- Increasing illuminance at floor level
- Improving the visual appearance of the ceiling
- Balancing lighting quality with energy efficiency
Fewer Fixtures, Better Illumination
The original arrangement used 10 downlights per row and produced approximately 200 lux at floor level.
Following the redesign, only six high-efficacy downlights were required per row—a 40% reduction in fixture quantity. Despite using fewer fixtures, the new arrangement achieved approximately 800 lux at lobby level.
This represented a fourfold increase in illuminance while creating a cleaner ceiling arrangement.
Improved Lighting Efficiency
The improvement was achieved through more efficient lighting hardware and a better-designed fixture layout.
When the performance is normalised to match the original 200-lux output, the new lighting solution would require approximately 75% less energy. This demonstrates the efficiency potential of the upgraded lighting system at an equivalent lighting level.
Product & Services Used
Agranergy high-efficacy downlights
Lighting layout redesign
Fixture quantity optimisation
Fixture quantity optimisation
| Metric | Before (T5 Lighting) | After (Smart LED) |
| Annual Energy Use | 631,771 kWh | 126,277 kWh |
| Electricity Cost | $177,780 | $35,534 |
| Energy Savings | — | 505,494 kWh per year |
| Cost Savings | — | Approximately $148,000 per year |
Key Outcomes
| Metric | Project Improvement |
|---|---|
| Illuminance | 4× increase, from approximately 200 to 800 lux |
| Fixture Optimisation | 40% fewer fixtures, reduced from 10 to six per row |
| Lighting Efficiency | 75% energy-saving potential at an equivalent 200-lux output |
The 75% figure is based on comparing both systems at the same 200-lux output. It does not represent confirmed energy savings while the upgraded lighting operates at 800 lux.
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