HID to LED

LED Offers Long Life, and Lower Energy Costs LEDs offer substantial energy savings compared to high intensity discharge (HID) and other traditional lighting systems
HID lamp: Source efficiency is typically 120 lumens/watt or higher. However, losses from trapped light, protective covers and lenses, inefficient ballasts and unfavorable operating temperature typically result in a measured system efficiency of 30 lumens/watt or less.
LEDs: Source efficiency can be 100 lumens/watt or higher, depending on the type and manufacturer of the LED used.
There are no losses from trapped light due to the focused output of the LED, and secondary optics and protective covers generally reduce output by only 25% or less.
LED power drivers are also more generally efficient than HID ballasts, and reduce system efficiency by 10-15%. However, even when efficiency reductions due to high operating temperatures are included, LED system efficiency often remains above 50 lumens/watt or higher.
The 35,000 to 50,000-hour bulb life of LED compare to 1000 hour incandescent or 2000-hour halogen.
Implementing an LED replacement program should result in a 50% reduction in annual energy use (kWh) costs.
The quality of the illumination — better color rendering — can be achieved with LED’s
Lighting equates to 12% of global grid based electricity consumption 50% – 70% expected energy saving with LED lighting
Municipality lighting from street lights and park lighting accounts for 40% of the electricity bill of local municipality.
LED lamps can reduce up to 50% of CO2 emission 50,000 Hours of the expected life of an LED, will reduce the cost of maintenance.

LED Offers Long Life, and Lower Energy Costs LEDs offer substantial energy savings compared to high intensity discharge (HID) and other traditional lighting systems

HID lamp: Source efficiency is typically 120 lumens/watt or higher. However, losses from trapped light, protective covers and lenses, inefficient ballasts and unfavorable operating temperature typically result in a measured system efficiency of 30 lumens/watt or less.

LEDs: Source efficiency can be 100 lumens/watt or higher, depending on the type and manufacturer of the LED used.

There are no losses from trapped light due to the focused output of the LED, and secondary optics and protective covers generally reduce output by only 25% or less.

LED power drivers are also more generally efficient than HID ballasts, and reduce system efficiency by 10-15%. However, even when efficiency reductions due to high operating temperatures are included, LED system efficiency often remains above 50 lumens/watt or higher.

The 35,000 to 50,000-hour bulb life of LED compare to 1000 hour incandescent or 2000-hour halogen.

Implementing an LED replacement program should result in a 50% reduction in annual energy use (kWh) costs.

The quality of the illumination — better color rendering — can be achieved with LED’s

Lighting equates to 12% of global grid based electricity consumption 50% – 70% expected energy saving with LED lighting

Municipality lighting from street lights and park lighting accounts for 40% of the electricity bill of local municipality.

LED lamps can reduce up to 50% of CO2 emission 50,000 Hours of the expected life of an LED, will reduce the cost of maintenance.