Provides user information and manuals for use of Northern’s online business application.
The following information is to help guide you through Northern Natural Gas’ business applications. If you experience any difficulties displaying the following documents, please contact the Customer Service team.
To download or save one of the following documents to your PC, right click on the link and then select “Save Link As..”
Flowing Gas and Invoicing Manuals
Capacity Release System (CRS) Manuals
- Capacity Release System (CRS) Timeline
This document represents Northern's Capacity Release timelines to be in effect April 1, 2016 in accordance with FERC Order 809 (Updated 2/16)
DDVC and SMS Information
- DDVC Calculator and Input Guide (April 2026 – March 2027)
The DDVC calculator provides customers an opportunity to create an example of how to determine a delivery point variance between scheduled and actual flow. The secondary tab identifies the supporting documents.
- DDVC Calculator and Input Guide (October 2025 – March 2026)
- SMS Service Details
- SMS-DDVC Graph During SOL and Critical Days (Other Than Small Customers)
This graph provides examples of Daily Delivery Variance Charges (DDVCs) for Other Than Small Customers during a System Overrun Limitations (SOL) Day or Critical Day as defined in Northern's tariff sheet No. 291
- SMS-DDVC Graph During SOL and Critical Days (Small Customers)
This graph provides examples of Daily Delivery Variance Charges (DDVCs) for Small Customers during a System Overrun Limitations (SOL) Day or Critical Day as defined in Northern's tariff sheet No. 291
- SMS-DDVC Graph During Standard and SUL Days (Small Customers)
This graph provides examples of Daily Delivery Variance Charges (DDVCs) for Small Customers during a System Underrun Limitations (SUL) or Standard Day as defined in Northern's tariff sheet No. 291
- SMS-DDVC Graph During Standard or SUL Days (Other Than Small Customers)
This graph provides examples of Daily Delivery Variance Charges (DDVCs) for Other Than Small Customers during a System Underrun Limitations (SUL) or Standard Day as defined in Northern's tariff sheet No. 291
Password Management and Multifactor Authentication Manuals
TMS Training Videos
TMS (Nominations & Scheduling) Manuals
- Allocations Training
The Allocations Training introduces customers to group allocations, encompassing methodologies, transportation and pooling nominations, priority rankings, and confirmation and balancing reduction impacts.
- Alternate Receipt-Delivery – TMS User Guidelines
This document is an overview regarding the implementation of NAESB Standard 1.3.80 and the flexibility of the alternate receipt and delivery points through the use of redirects of scheduled quantities.
- Commonly Used Acronyms
This document contains frequently used and common acronyms used within the natural gas industry as well as Northern (Updated 9/17)
- Cycles, Flow Times and EPSQ Volumes
This document contains user guidelines regarding Elapsed-Prorated Scheduled Quantity (EPSQ).
- FDD Nomination Activity During Storage Allocations
This document contains user guidelines regarding FDD nominations during a storage allocation. (Updated 1/19)
- Final 8:00 AM Guidelines
This document reviews the storage nomination guidelines for the Final 8AM Cycle.
- Point Available Capacity Calculator
The Point Available Capacity calculator allows customers to analyze remaining point capacity based on posted operational capacity and scheduled quantities from previous nomination cycles.
- TMS – Elapsed Prorated Scheduled Quantity (EPSQ) Calculator
The EPSQ calculator provides customers an opportunity to determine the EPSQ volumes based on previous cycle’s scheduled quantities.
- TMS – Nomination Timeline
This document contains the nomination timeline grid on Northern beginning April 1, 2016.
- TMS – Nomination/Scheduling Overview
This document is an overview of nomination and scheduling process for Northern.
- TMS – Operator Confirmation User Manual
This manual will provide Northern Operators with instructions on getting started using the Throughput Management System
- TMS – Quick Tips
- TMS – Reduction Reason Codes
This document provides user's of Northern's Throughput Management System (TMS) a list of scheduling reduction codes.
- TMS – Storage Netting at a Location User Manual
- TMS – User Manual
- TMS – User Training (Java)
- TMS Grouping Functionality
This document contains instructions on grouping data in the Throughput Management System.
Imbalance Resolution Manual
- Imbalance Resolution Election System (IRES) User Manual
This manual contains procedures and overview regarding Posted Imbalances, Imbalance Trading and Imbalance Resolution processes and screen procedures.
Storage Information
- 2024 Kansas Tax Worksheet for Estimate of Tax Evaluation
- 2025 Kansas Tax Worksheet for Estimate of Tax Evaluation
- FDD Billing Example – 1/1/2026 – 1/31/2026
The above link takes you to an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract. In the cell noted, input the cycle quantity for a particular FDD contract to generate the monthly billing for reservation and capacity charges, charges based on cyclical firm injections and withdrawals, and the FDD unit cost at a 100% load factor.
- FDD Billing Example – 2/1/2026
The above link takes you to an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract. In the cell noted, input the cycle quantity for a particular FDD contract to generate the monthly billing for reservation and capacity charges, charges based on cyclical firm injections and withdrawals, and the FDD unit cost at a 100% load factor.
- FDD Billing Example – 4/1/2025 – 12/31/2025
The above link takes you to an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract. In the cell noted, input the cycle quantity for a particular FDD contract to generate the monthly billing for reservation and capacity charges, charges based on cyclical firm injections and withdrawals, and the FDD unit cost at a 100% load factor.
- FDD Interactive Reference Tool
The above link contains Excel worksheets in which the cycle quantity for a particular FDD contract can be entered and the following information is generated: parameters and flexibilities for the four FDD service options and a spreadsheet depicting different options for early or late inventory fill and withdrawal. Illustrative graphs are also included within the spreadsheet. (Updated 5/18)
- FDD Market Based Rate Billing Example – 1/1/2026 – 1/31/2026
The above link contains an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract and a Market Based Rate of $1.50.
- FDD Market Based Rate Billing Example – 2/1/2026
The above link contains an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract and a Market Based Rate of $1.50.
- FDD Market Based Rate Billing Example – 4/1/2025 – 12/31/2025
The above link contains an Excel spreadsheet with a billing example for a 1.0 Bcf FDD contract and a Market Based Rate of $1.50.
- FDD Service and Rate Information
The above link contains descriptions of the three FDD service options: GIP, 3-Step, 4-Step. It also contains FDD injection and withdrawal information, parameters and rates.
- IDD Billing Analysis Worksheet – 1/1/2026 – 1/31/2026
Excel worksheet
- IDD Billing Analysis Worksheet – 2/1/2026
Excel worksheet
- IDD Billing Analysis Worksheet – 4/1/2025 – 12/31/2025
Excel worksheet
- Storage Balancing Service (SBS) Overview

