A standard halogen lamp turns 90% of electricity used into heat with only 10% into light. The benefit of LED Lights are that they use only up to 15% of the energy a standard halogen uses, provide up to 85% of the light output and create less heat making them so cool to touch. This makes LED Lights not only energy efficient but extremely cost effective as air conditioning use can be lowered. Some LED Lights can be operated by mains power, but when used with a Low Voltage LED Driver, LED Lights will produce more light output per watt. If you are using a inverter or UPS to power your lighting when there is a power outage, your lighting back-up time increases up to 90%.