If you have any questions about Customer Select®, please call our Gas Transportation
Customer Service Center at 630.983.4040 and choose menu option 1. You can also send us an email at GTQA@southernco.com.
In your email please include the following information:
About Nicor Gas - Updated 8/2009
Towns & Zip Codes Served - Updated 10/2018
Contacts & Key Dates - Updated 8/2009
Download All Files In This Section - Updated 10/2009
Rider 15 Customer Select - Updated 10/2009
Rider 16 Supplier Aggregation Service - Updated 4/2018
Traditional Transportation Customers - Updated 3/2011
Supply & Storage - Effective May 1, 2018 - Updated 4/2018
Customer Education Summary - Updated 9/2009
General Description - Updated 5/2012
Record Layouts - Updated 6/2010
Glossary of Terms - Updated 12/2017
Verification Status Values & Codes - Updated 7/2010
Glossary of Terms (Supplier Consolidated Billing Option) - Updated 6/2007
- Appendix 1 - Cancel Reason Codes
- Appendix 2 - Adjustment Codes
- Appendix 3 - Service Agreement Type Codes
Web Standards for Customer Select & Gas Transportation Suppliers - Updated 6/2008
30DYFRCST 30dyfrcst.txt
ANNFRCST annfrcst.txt
CONSUMPT consumpt.txt
CUSTDROP custdrop.txt
CUSTLIST custlist.txt
CUSTPMNT custpmnt.txt
CUSTTERM custterm.txt
DAILYNOM dailynom.txt
DISCNNCT discnnct.txt
MONTHEND monthend.txt
NBBILL nbbill.txt
NBPMNT nbpmnt.txt
NBRESPNS nbrespns.txt
NOSOLLIST nosollist.txt
SBACCEPT sbaccept.txt
SBACCPTDTL sbaccptdtl.txt
SBREJECT sbreject.txt
SIGNUP signup.txt
SUPLBILL suplbill.txt
SUREJECT sureject.txt
TRNSCRPT trnscrpt.txt
Frequently Asked Questions - Updated 10/2009
2018 Holiday & Meter Reading Schedule - Updated 9/2018
2019 Holiday & Meter Reading Schedule - Updated 9/2018
Summary of Agreements - Updated 8/2003
Supplier Aggregation Agreement - Updated 9/2009
Supplier of Market Segment Participation - Updated 8/2003
Participating Supplier Information Sheet - Updated 8/2003
Supplier Deposit Guaranty Agreement - Updated 8/2009
Affidavit of FIrm Gas Supply Contracts - Updated 10/2011
Summary of Additional Services - Updated 9/2010
Commercial Customer List License Agreement - Updated 11/2014
Nicor Gas Consolidated Billing Service - Updated 11/2007
Supplier Consolidated Billing Services - Updated 11/2008
Nicor Gas Direct Mail Marketing Program - Updated 7/2014
Residential Customer Mailing List Licensing Agreement - Updated 4/2009
Residential & Small Commercial Customer Data License Agreement - Updated 3/2010
In 2019, Nicor Gas will again follow an administrative procedure to handle nomination requirements on NYMEX holidays when Nicor Gas is open for business and to better align nomination schedules with market trading in situations where trading for the month has ended.
Nicor Gas will continue to send a DAILYNOM file each business day containing requirements for the following gas day(s). However, when Nicor Gas is open for business on NYMEX holidays, or when trading for the month has ended, Nicor Gas will not change the group’s Estimated Use and Daily Delivery Range on those days from what was published as their estimates in the previous day’s DAILYNOM file – except when needed to meet Critical Day requirements, Operational Flow Orders or as needed to meet business or operational needs.
We hope this process continues to streamline operations for suppliers participating in the Customer Select program. Nicor Gas reserves the right to modify this process in the future as needed to meet future business requirements.
DAILYNOM File: |
Contains “Required” Daily Delivery Ranges for |
Friday, January 18, 2019 |
January 19, 20, 21 & 22 |
Friday, February 15, 2019 |
February 16, 17, 18 & 19 |
Thursday, March 28, 2019 |
March 29, 30, & 31 |
Thursday, June 27, 2019 |
June 28, 29 & 30 |
January 19, 20, 21 & 22 |
July 4, 5, 6, 7 & 8 |
Thursday, August 29, 2019 |
August 30 & 31 |
Tuesday, November 26, 2019 |
November 27, 28, 29 & 30 |
Unaccounted-For Gas Percentage Change
Nicor Gas made its annual calculation of the unaccounted-for gas percentage. Effective September 1, 2018, the factor will be 1.34%.
Change in Rate Used to Calculate Storage Capacity
Effective May 1st, 2018, the rate used for calculating storage capacity is changing to 30 times the groups’ MDCQ plus an additional 6 times the group’s MDCQ, for a total of 36 times the group’s MDCQ. For additional information please refer to the Rider 16 tariff, Sheet No. 75.5, Storage Capacity.
2018 Nomination Procedure & Schedule
Gas is open for business and to better align nomination schedules with market trading in situations where trading for the month has ended.
Nicor Gas will continue to send a DAILYNOM file each business day containing requirements for the following gas day(s). However, when Nicor Gas is open for business on NYMEX holidays, or when trading for the month has ended, Nicor Gas will not change the group’s Estimated Use and Daily Delivery Range on those days from what was published as their estimates in the previous day’s DAILYNOM file-except when needed to meet Critical Day requirements, Operational Flow Orders or as needed to meet business or operational needs. We hope this process continues to streamline operations for suppliers participating in the Customer Select program. Nicor Gas reserves the right to modify this process in the future as needed to meet future business requirements.
DAILYNOM File: |
Contains “Required” Daily Delivery Ranges for |
Friday, January 12, 2018 |
January 13, 14, 15 & 16 |
Friday, February 16, 2018 |
February 17, 18, 19 & 20 |
Thursday, June 28, 2018 |
June 29 & 30 |
Thursday, September 27, 2018 |
September 28, 29 & 30 |
Thursday, December 27, 2018 |
July 4, 5, 6, 7 & 8 |
Thursday, August 29, 2019 |
December 28, 29, 30 & 31 |
Unaccounted-For Gas Percentage Change
Nicor Gas made its annual calculation of the unaccounted-for gas percentage. Effective September 1 2017, the factor will be 1.32%.
2017 Nomination Procedure & Schedule
In 2017, Nicor Gas will again follow an administrative procedure to handle nomination requirements on NYMEX holidays when Nicor Gas is open for business and to better align nomination schedules with market trading in situations where trading for the month has ended.
Nicor Gas will continue to send a DAILYNOM file each business day containing requirements for the following gas day(s). However, when Nicor Gas is open for business on NYMEX holidays, or when trading for the month has ended, Nicor Gas will not change the group’s Estimated Use and Daily Delivery Range on those days from what was published as their estimates in the previous day’s DAILYNOM file – except when needed to meet Critical Day requirements, Operational Flow Orders or as needed to meet business or operational needs.
We hope this process continues to streamline operations for suppliers participating in the Customer Select program. Nicor Gas reserves the right to modify this process in the future as needed to meet future business requirements.
The following is a schedule of nomination requirements for the impacted periods throughout 2017:
DAILYNOM File: |
Contains “Required” Daily Delivery Ranges for |
Friday, January 13, 2017 |
January 14, 15, 16 & 17 |
Friday, February 17, 2017 |
February 18, 19, 20, & 21 |
Thursday, April 27, 2017 |
April 28, 29 & 30 |
Thursday, September 28, 2017 |
September 29 & 30 |
Thursday, December 21, 2017 |
December 22, 23, 24, 25, & 26 |
Thursday, December 28, 2017 |
December 29 & 30 |
Unaccounted-For Gas Percentage Change
Nicor Gas made its annual calculation of the unaccounted-for gas percentage. Effective September 1, 2016, the factor will be 0.99%.
2015 Nomination Procedure and Schedule
In 2015, Nicor Gas will again follow an administrative procedure to handle nomination requirements on NYMEX holidays when Nicor Gas is open for business and to better align nomination schedules with market trading in situations where trading for the month has ended.
Nicor Gas will continue to send a DAILYNOM file each business day containing requirements for the following gas day(s). However, when Nicor Gas is open for business on NYMEX holidays, or when trading for the month has ended, Nicor Gas will not change the group’s Estimated Use and Daily Delivery Range on those days from what was published as their estimates in the previous day’s DAILYNOM file – except when needed to meet Critical Day requirements, Operational Flow Orders or as needed to meet business or operational needs. We hope this process continues to streamline operations for suppliers participating in the Customer Select program. Nicor Gas reserves the right to modify this process in the future as needed to meet future business requirements.
The following is a schedule of nomination requirements for the impacted periods throughout 2015:
DAILYNOM File: |
Contains “Required” Daily Delivery Ranges for |
Friday, January 16, 2015 |
January 17, 18, 19, & 20 |
Thursday, January 29, 2015 |
January 30 & 31 |
Friday, February 13, 2015 |
February 14, 15, 16 & 17 |
Thursday, February 26, 2015 |
February 27 & 28 |
Thursday, May 28, 2015 |
May 29, 30 & 31 |
Thursday, October 29, 2015 |
October 30 & 31 |
Wednesday, December 23, 2015 |
December 24, 25, 26, 27 & 28 |