Meet the energy efficient alternative for your obsolete 175-watt mercury vapor exterior barn lights Excellence Opto, Inc. is pleased to announce the introduction of the e-lite star™ BR1 LED Dusk-to-Dawn Barn Light.  Utilizing only 42-watt to replace the 100-watt High Pressure Sodium (HPS) traditional fixtures, the BR1 LED barn lights deliver a high efficacy of up to 90 lm/W with more than 55% in energy savings.