Validation of the Home Energy Saver Energy Calculation Methodology: Using Empirical Data to Improve Simulation

August 6, 2013 - 12:00pm - 1:00pm
Seminar Host/Point of Contact: 

The Home Energy Saver (HES) suite – developed by EETD researchers – offers popular online simulation tools that enable U.S. homeowners and energy professionals to rigorously evaluate home energy use and develop recommendations on how energy can be saved across all end uses. The underlying analytical system is also available as a web service to power third-party energy analysis tools. Given the system’s diverse uses, it is important that the simulation is robust and accurate. While the HES engineering methods are extensively documented and subjected to peer review, it is useful to evaluate how well HES predicts energy use in occupied homes. This presentation compares measured to predicted energy use for 428 occupied homes in Oregon, Florida, and Wisconsin, representing a diversity of building types, energy intensities, and occupant behaviors. The results show how audit depth, knowledge of operational details, and sub-metered energy data can be valuable to the process of improving model accuracy—particularly for individual households, where energy use can vary three-fold for homes with virtually identical physical characteristics. Accuracy is strongly proportional to the quality and completeness of inputs, yet audit data are often deficient. Predictions are best—and the tendency of models to over-predict actual consumption is mitigated—when behavioral inputs match actual conditions. When averaged across groups of homes, HES predicts energy use within 1% of actual consumption when physical characteristics and occupant behavior are well accounted for. New research findings promise to confer even greater accuracy as they are incorporated into simulation tools.

(Read the report at: )

A recording of this seminar is available at:

Add event to Google Calendar

Announcement List

To be added to our seminar annoucement list please, email ETA Seminars. Seminars may change without notice, stay informed by joining our seminar email list. 

Site Access

For site access please email your request to ETA Seminars. To arrive at Building 90 via the LBNL shuttle, take "Blue Uphill". Click here for the shuttle schedule. To ensure your site access is set-up send your request 36 hours in advance of the seminar.

Remote Access

Not able to attend in person? Remote participants can use ReadyTalk Audio & Net conference to phone in to listen, while viewing the presentation via the ReadyTalk site.

Web Access Code: 4864835

USA & Canada call-in number:
1 (866) 740-1260
Access Code: 4864835#

International callers:
Please visit this website to see if a toll-free call-in number is available for your international location.

If not, you will need to pay for the call yourself and use this phone number:

(303) 248-0285.