Dimmers are a lighting control option that also reduce electricity use. There are two different types of dimmers: one where the person can control the amount of light needed manually, or the second type where the light itself adjusts depending on the room condition. (Darkness vs. daylight) Both strategies are good ways to reduce energy consumption.
    Besides dimmers there are other options available like: occupancy sensors, automatic daylight shutoffs, and timers. Keep this in mind and try to reduce your energy consumption by installing one of these lighting controls.