“…Further decreasing the energy efficiency of the halogen lamps is the strong non-linear relationship between efficacy and dimming, as seen in Figure 4. This plot, constructed from average data of several halogen lamps, shows that a halogen torchiere operating at 50 percent light output consumes nearly 75 percent of peak power, while at 50 percent peak power the torchiere produces 20 percent of peak light output (Page and Siminovitch, 1997). Table 2 presents lamp and fixture data for the CFL torchiere and the average unlabeled halogen torchiere at full and half power.…”