The Demand Limiting feature helps you save money by limiting energy use during times of peak demand. The Load Rolling feature helps save money by reducing overall energy consumption. The Demand Limiting (DL) portion of DLLR selectively turns off (sheds) equipment (loads), such as fans and lights, or adjusts setpoints to limit energy use during periods of the day that are traditionally high-use, peak times. The Load Rolling (LR) portion acts continuously to maintain a specified energy reduction by shedding non-critical loads. A facility can implement either one or both of these strategies. Figure 1 provides a simple concept drawing of DLLR. The utility company provides the rates, the demand meter measures the demand, and the algorithms in the DLLR object use this information to control the loads.
Figure 1. DLLR Concept
