One of the most common questions we get at Parity is what is weather adjustment, how does it impact your savings with Parity and how do we account for the weather when we calculate our savings?
In truth it’s a simple process that can be explained in a few easy steps.


How Parity determines a baseline for future Energy Usage:

We calculate the CDD (Cooling degree days) and HDD (Heating degree days) that were used to maintain a steady indoor temperature, in this case, of 20 °C. Using the chart above we can see that in 2019 this building required 135 days of heating (Gas = Winter) and 71 days of cooling (Electricity = Summer) to maintain that indoor temperature of 20 °C.
Weather Adjusted Savings

At the same time the energy use trend that we’ve created based on your historical data, will also show you how much less energy your building will be using and how much you’ll be saving (backed up by our Savings Guarantee) under Parity control.
Think of this trend as what you would have used if Parity hadn’t been deployed in your building. This is what is called Weather adjusted Savings and is used by Parity to provide “data-backed” transparency on what your real savings are when Parity is deployed in your building, compared to the costs without Parity.
We strive to make our weather adjusted savings process transparent and understandable and we strictly adhere to an industry standard measurement and verification protocol called IPMVP (International Performance Measurement and Verification Protocol) It’s widely recognized globally as the gold standard when calculating weather adjustment.
If you have any questions or comments on your Weather Adjusted savings please reach out to your Parity sales executive or call us a 1-833-372-7489.