Weather Normalization in the App

Last Updated: Jan 05, 2017 10:51AM EST
Contents:
Methodology

Where to find the weather normalized data
How to work with the data
‚Äč


Methodology
WegoWise has the ability to take into account the effects of weather when showing your data.  When looking at heating or cooling energy in WegoWise, regressions are run following the PRISM methodology in order to determine the balance point for your building.  What is the balance point?  The balance point is the outdoor air temperature causing building heat gains to be dissipated at a rate that creates a desired indoor air temperature. Knowing it allows us to determine what the baseload energy usage of your building is and the weather-related energy usage.  

Why is weather normalizing important?  Say you've installed a boiler and want to make sure the gas savings you've seen were from that and not a mild winter - looking at heating energy is a great way to do that.  Likewise, if you make improvements to your building envelope and install a new heat pump, but don't see any savings the next summer, looking at cooling energy helps you to determine if it may have been because that summer was an unusually hot one.  

Where to find heating and cooling energy
Click on Properties and then the name of the development you wish to see heating or cooling energy for.  Select the dropdown menu that says "Total Energy Use."



At the bottom of that menu you'll see options for heating and cooling energy. 

Heating and cooling energy

You can also look at heating and cooling energy on the Building Upgrades screen.  You will find it in the same menu once you navigate to that section.  To navigate to the Building Upgrade screen, from the screen you are currently on, click the name of a building.  You'll now see the Building Upgrades button. 



How to work with the data
Heating Energy Intensity Score

The value highlighted in the blue box above is the heating energy intensity;  this is the annual sum of the BTU consumed per conditioned square foot per heating degree day.  This is also referred to this as a heating energy score and can be used as a way to rank the inefficiency of a buildings or, for retrofit programs, to determine which buildings are inefficient enough to continue in the application process.  Higher numbers indicate less efficient buildings.