Knowledgebase:
EC Express: Calendarization and Normalization Overview
Posted by Matthew Heinz on 04 June 2012 11:58 AM

Calendarization and Normalization Overview

Calendarization more accurately allocates utility bill usage and cost data for reporting purposes by dividing the data into day-size chunks and allocating them to the appropriate calendar month. 

Normalization compensates for year-to-year weather variations by imposing the same year’s weather (in terms of degree days) on each year of usage data. Weather normalization enhances the value of year-to-year usage comparisons.

These features are available to EnergyCAP clients who have purchased the Cost Avoidance option.

How it's Done

In both the calendarization and normalization processes, a sophisticated and fully automatic process is used to:

  1. Determine if a meter is statistically weather sensitive due to a valid correlation between usage and degree days

  2. Determine if it is weather sensitive in summer, winter, neither or both

  3. Create a mathematical model of the meter’s response to degree days which indicates how sensitive it is (in usage per degree day) and how much non-weather base load it has (in usage per day)

  4. Use the mathematical model (if weather sensitive) or simple daily proration (if not weather sensitive) to create the calendarized and normalized results.

The results of calendarization and normalization may be viewed in Buildings & Meters chart displays, as well as a series of specialized reports.

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