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Monthly Variable-based Degree Day Template: A Spreadsheet Procedure Calculating a 3 Parameter Change-point Model for Residential or Commercial Buildings
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This report presents a spreadsheet procedure for calculating a variable-based degree day or three parameter change-point models using monthly utility billing data and coincident weather data. These models were used to model monthly energy consumption levels at a middle school in Fort Worth, Texas during the school year. Twenty two months of monthly utility billing data were analyzed using the three parameter models. An analysis is also presented where the current spreadsheet model is compared against the PRInceton Scorekeeping Method (PRISM) (Fels 1995) and Emodel 1.4b (Kissock et al. 1994) with favorable results.
Subjectvariable-based degree day
PRInceton Scorekeeping Method
Advanced PRISM 1.0
- Technical Reports 
Landman, D. S.; Haberl, J. S. (1996). Monthly Variable-based Degree Day Template: A Spreadsheet Procedure Calculating a 3 Parameter Change-point Model for Residential or Commercial Buildings. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University; Department of Mechanical Engineering, Texas A&M University. Available electronically from