What is 'heating degree day' in SAP EHS-CI - SAP Carbon Impact?

heating degree day - Overview

• Component: EHS-CI

• Component Name: SAP Carbon Impact

• Description: A measure of how much in degrees, and for how long in days, outside air temperature was lower than a specific base temperature. Used for calculations relating to the energy consumption required to heat buildings. Essentially, the colder the outside air temperature, the more energy it takes to heat a building.

heating degree day - Details

• 
  Key Concepts:
  Heating degree day (HDD) is a measure of how much energy is needed to heat a building over a certain period of time. It is calculated by subtracting the average daily temperature from a base temperature, usually 65°F. The higher the HDD, the more energy is needed to heat the building. 
  
  How to use it:
  In SAP Carbon Impact, HDD is used to calculate the energy consumption of a building. The higher the HDD, the more energy is needed to heat the building and thus the higher the carbon emissions associated with it. 
  
  Tips & Tricks:
  When calculating HDD, it is important to take into account seasonal variations in temperature. This will help ensure that the calculation is accurate and that the energy consumption and carbon emissions associated with a building are accurately estimated. 
  
  Related Information:
  HDD is just one of many metrics used to measure energy consumption and carbon emissions in SAP Carbon Impact. Other metrics include cooling degree day (CDD), total degree day (TDD), and heating season length (HSL).