Commercial and Residential Hourly Load Data Now Available on OpenEI!

Load data

Image source: NREL


I am pleased to announce that simulated hourly residential and commercial building load datasets are now available on OpenEI. These datasets are available for all TMY3 locations in the United States. They contain hourly load profile data for 16 commercial building types (based off the DOE commercial reference building models) and residential buildings (based off the Building America House Simulation Protocols). In addition to various building categories, the simulations also consider variations in building construction due to local climate. The data can be accessed here:


You may browse and download individual load profiles (for example, hourly load profile for a large hotel in Tulsa, Oklahoma). You can also download the entire dataset (beware: 4.8 GB zipped, 19 GB uncompressed!). Building load profiles are useful/essential for a variety of applications, including calculating utility bill savings for rooftop solar systems, demand response analyses, and residential/commercial renewable energy feasibility studies. A few examples of projects and publications that relied on earlier versions of the data include:


Impacts of Regional Electricity Prices and Building Type on the Economics of Commercial Photovoltaic Systems


Breakeven Prices for Photovoltaics on Supermarkets in the United States


Maximizing the Value of Photovoltaic Installations on Schools in California: Choosing the Best Electricity Rates


The Impacts of Commercial Electric Utility Rate Structure Elements on the Economics of Photovoltaic Systems


Special thanks goes to Nathan Clark, who has been working on these datasets for over a year! Nathan has also developed a System Advisor Model (SAM) program that allows users to automatically download appropriate load profiles directly into SAM for analysis and visualization. I’ve attached the program to this post, in case anyone would like to use it (you may need to download the latest SAM version to use it).  This program will also be included in the next public release of SAM (as a sample samUL file). 


Questions and comments are always welcome below!



Residential 8760hr load per TMY zone


I am wondering what kind of residential building the loads are calculated for in the commercial and residential load data.


Nr of rooms?


Thank you for your help!



Residential hourly load building characteristics

Here is a link to a pdf with details on the building characteristics for the homes:

Here's the Building America Climate Zone map used to assign building characteristics listed in the pdf to TMY3 locations:

Here's a link to the EnergyPlus documentation, which contains definitions of the output fields in the dataset columns:


asking for help about electrical load classification

Now I am perparing a paper about the electrical load classification. Where could I obtain the load dataset including the geology information? For example, the data like:

Load ((x,y), t , u)=load

Which the (x,y)is the site, the T is the time, and U is the utility of the load.



Whitefoxcy, see above

Whitefoxcy, I think my recent response above will give you the details you requested.