Operation and climate impact on electrical demand for institutional buildings

Two representative buildings were selected to qualitatively and quantitatively study the impact of lighting and of heating, ventilating, and air conditioning (HVAC) system operation on total electrical demand. Recordings were made at five minute intervals for total building electrical consumption and for selected lighting circuits. The data were collected during the times when electrical demand was highest. Using multiple linear regression, the impact on total electrical demand from operational and climatic variables was determined. The results from these analyses are presented. Various sensitivity analyses were conducted to show the difference between the average and peak demand levels and their implications for energy reduction strategies