Difference In Daily Total Usage

[kevin1]

I did a post on how to check correlation and isolate discrepancies here:

So You Just Installed Your Sense and You Want to See If It's Really Working

Download the data from both sources and convert it to a common interval Step 1 - Export the data from Sense using the Export icon in the upper right corner of the Trends > Usage page. You can select any interval, but I like to compare at a yearly level (or more). [Screen Shot 2020-05-20 at 8.21.08 AM] Step 2 - One you initiate the download, you’ll be prompted for the data interval. I typically use hourly intervals for comparison, since that allows you to more precisely isolate the biggest m…

A few possible causes for discrepancies:

1. Sense CT not completely closed - Sense number lower than utility
2. Data loss from Sense - Sense number lower than utility
3. Utility data issues - Utility number could be lower or higher

Possible sources for your discrepancy depend a fair amount on your utility and how they collect readings and provide to you. If you have a smart meter, as it appears you do since you can get daily data, then most likely your meter sends readings every 15min or hour. But not all those readings always make it through to the utility thanks to wireless communications issues. If data is missing, the utility will substitute estimated reads for actual reads.