The longevity of our LED Bulbs is easily the most important benefit over conventional lighting options. Our bulbs have a life expectancy of 50,000 to 100,000 hours or more. It is approximately 2-4 times the life of fluorescent, sodium vapor, and metal halide lights. Reduced bulb replacement frequency results in two significant savings such as lower labor expenses and low replacement components prices, as the LED Bulbs do not fail for an extended period. These bulbs require little electricity in general. When evaluating the energy efficiency of various lighting solutions, one of two metrics is used: usable lumens or luminous efficacy.