ComEd’s Energy Choice Supplier section is designed to provide new and active electricity suppliers with the information needed to register and to conduct business in the ComEd service area.
The Excel file below contains historical aggregated hourly delivery load data in kWh by customer class (the “Data”). This information is being provided
voluntarily on a temporary-basis for informational purposes only and is in response to the COVID-19 pandemic event. Commonwealth Edison Company (the “Company”) reserves the right, in its sole discretion and at any time, to discontinue the provision of the Data going forward, remove the posting of the historical Data or change the format of how the Data is presented.
The Data was obtained by using information available within the Company’s AMI network, subject to the qualifications described below. The Data provided is not in any way an aggregation of billing quality data. The Company has used commercially reasonable efforts to provide the Data in a format that provides historical (aggregated hourly) delivery loads posted daily by the close of business Monday through Friday at least 72 hours after the day for which the Data is provided.
Aggregated Hourly Load Data (xls)
Disclaimer: The Data is made available for informational proposes only in response to the COVID-19 pandemic event. The Company is providing the Data on an "AS IS" basis. No warranty, statutorily, express or implied, is made regarding the accuracy, adequacy, completeness, legality, reliability or usefulness of any of the Data. All warranties are disclaimed of any kind, including, but not limited to, statutory, express or implied; the implied warranties of merchantability, fitness for a particular purpose, freedom from contamination or corruption of any kind; and non-infringement of ANY third party’s proprietary rights. THE COMPANY IS NOT OBLIGATED to provide corrections or updates of the Data that is later discovered to be inaccurate or misleading in any way.
In connection with the provision of this Data, the Company, in no event, shall be liable to any third party for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, personal injury or death, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, tort (including negligence or otherwise), or any other theory arising in any way out of the use of the Data, even if advised of the possibility of such damages.
The Company is not liable to any third party for any improper or incorrect use or any modification or alteration of the Data provided and assumes no responsibility for any third party’s use of the Data. For purposes of this disclaimer, “third party” includes the original recipient of the Data.
1-630-684-3070 or email
The role of the Electric Supplier Services Department is to guide Retail Electric Suppliers and Metering Service Providers through the registration process at ComEd and provide them with information on ComEd's delivery services requirements and processes. The department is staffed with Account Managers who are well-schooled in ComEd systems and procedures. We will be happy to provide you with information and guidance.
To begin the enrollment process, Retail Electric Suppliers must complete a registration form and submit it with supporting documentation to ESSD.
Registration Form (pdf)Submit to:
PJM is a fully functioning regional transmission organization, operating the world's largest competitive wholesale electricity market and North America's largest power grid. Membership in PJM is required in order to become a Retail Electric Supplier and deliver power and energy within the ComEd service territory. Visit their website for access to PJM business processes and tools and for important information concerning membership, PJM markets, customer information, PJM training and links to other related sites.
When an existing customer changes its Federal Employer Identification Number (“TAX ID”), ComEd creates a new account for the new entity with the new TAX ID. For those customers supplied by a RES, the RES supply service must be reinstated on the new account if the customer wishes to continue supply service with the RES. In order to avoid the discontinuance of RES supply service for the new customer in this circumstance, ComEd provides a new business process for the RES serving the predecessor customer. To begin this process, complete the attached authorization form and submit it to ESSD via email or fax.
Authorization Form (pdf)
This tariff is available to entities seeking to obtain usage data pertaining to the Company’s retail customers. The purpose of this tariff is to define the circumstances and the terms and conditions under which the Company provides and/or makes available retail customer usage data to a Third Party. To begin this process, please complete that attached Rate Dart registration form and submit to ComedDataRequest@exeloncorp.com. A completed registration form is necessary when requesting AMI historical interval usage (HIU) data using the supplier portal system, which will provide up to two years of non-billed quality AMI historical interval usage data. A completed registration form is also necessary when certifying for the Green Button Connect process that will allow third party providers to gain access to usage data for residential customers.
Rate Dart Registration Form (pdf)
UFE is allocated proportionally by load share. The link below contains the hourly and monthly UFE percentages for the ComEd zone beginning with the June 2012 reconciliation.
Unaccounted for Energy Data (xls)
This rider allows a RES to receive interval meter data for residential customers that are provided a TOU/Demand Response billing option.
To begin the process of placing customers on Rider RMUD, please contact your ESSD Account Manager. A RES must complete the following steps before submitting customers under Rider RMUD to ComEd via the EDI protocol:
Customers are enrolled under the provisions of Rider RMUD utilizing the standard switching rules. DASRs submitted for enrollment under the Rider or a change request DASR to place the account on Rider RMUD will become effective on the next meter reading date that is at least 18 days from the successful submittal by the RES. AMI Interval data may be discontinued by the RES by submitting a change request to remove the account from the Rider or by the customer changing suppliers. Please see the RES Handbook for further details on this process.
MSPs are providers of metering service certified by the Illinois Commerce Commission under the provisions of 83 Illinois Administrative Code Part 460. For more information, please contact the Electric Supplier Services Department.
Integrated Distribution Company (IDC) rules provide that in times of an emergency, ComEd may take any actions necessary to protect the public health and safety or electric system integrity and reliability. If under non-emergency situations such actions would constitute violations of the IDC rules, ComEd is to file written reports with the Illinois Commerce Commission and publicly post such reports.
ComEd's load profiles are based on average historical hourly load data in kWh, collected from a statistical sample of the segment to be profiled. From the sample data, an average profile for each delivery service class is created for each hour in the year. The sample data used to compute these averages are also utilized in the PJM 60-day reconciliation process.
The link below contains historical hourly load data from April 1, 2009 CST and is updated on a monthly basis. The data are in an excel format.
Historical Load Profiles (xls)