LEP Parking Lot Lighting in Silicon Valley

Case Study: Semiconductor Manufacturer — Silicon Valley, CA
Application: Parking Lot Lighting

Silicon Valley is home to a thriving industry of cutting-edge high technology, and this semiconductor manufacturer consulted with Wil-Cal Lighting Management looking for ways to improve their outdoor area lighting.

Wil-Cal delivered a system using LEP to save 55% energy, reducing their carbon footprint while improving the quality of light compared to their original HPS installation. Occupancy sensors were used in Hi-Lo mode to dim lamps during the night to save even further energy.

We have used LUXIM Light Emitting Plasma technology on two different jobs replacing the yellow high pressure sodium with brilliant white light. On both jobs, we have saved approximately 50% energy while increasing light levels.
—Kinya Pollard, Wil-Cal Lighting Management

Highlights

• Achieved 55% energy savings with Light Emitting Plasma technology
• Reduce CO₂ emissions by 0.85 tons each year
• 50% reduction in maintenance costs
• 1/3^rd setup time compared to typical lighting installations
• Uniform illumination completely eliminating dark spots
• Safer night-time environment with accurate color rendering
• Hi / Lo operation using motion sensors

Detailed Results Per Fixture

	HPS 400W	LEP STA-41-01 Hi/Lo	LEP Savings
AC System Power	465W	209W	236W
Daily Usage	12 Hours	12 Hours	N/A
Lamp Replacement Cost	$150	$200	-$50
Lamp Replacement Cycle	18,000 Hours	50,000 Hours	32,000 Hours
Annual Operating Costs
Average Annual Lamp Replacement Cost	$37	$18	$19
Total Energy Consumption	2037 KW-Hrs	913 KW-Hrs	1124 KW-Hrs
Annual Energy Cost ($0.13/KW-Hr)	$265	$119	$146
Total Annual Operating Cost	$18,000	$4,536	$13,464
Environmental Impact
Annual CO2 Produced	1.53 Tons	0.68 Tons	0.85 Tons