As seen in Figure 3.2 below, in 2013 the installed base in lumen-hours was dominated by linear fluorescent and HID lighting, both of which have high operating hours, high lumen output per lamp, and large number of installations. However, in terms of installed base, LED lighting is predicted to account for a majority of installations by 2022 and 88% of all lumen-hours being produced for general illumination in 2030.