Transmission operational data
This page contains gas transmission data for industry analysts, including operational data for all industry stakeholders. We provide this information to reduce market uncertainty, ensure equal access to information, and increase information transparency. Our goal is to increase efficiency in the capacity and energy markets, while providing fair and timely access to operational and market information.
Operational forum
Regular meetings with gas customers to discuss the operation and performance of the Network Code energy balancing and capacity systems.
Operational news
On this page, you will find the latest news and announcements relating to gas operations and data. Please refer to this page for industry updates, data changes and outages.
Useful Operational Information
Visit our Useful Operational Information page to find links to all kinds of operationally relevant information. Areas covered include: NTS Operational Overview, Pre-Emergency Comme...
Gas market data tools
You can use these tools to access and capture gas transmission data.
Instantaneous Flows into the NTS
Here you can access real time flow data for system entry points. This information is updated every two minutes and published at twelve-minute intervals.
Data Item Explorer
Data is available in the Data Item Explorer at an individual item level. The data items are categorised according to subject. Users can select combinations of items of their choice. There is the option to view the data on the screen or download via CSV or XML.
Prevailing View
Our Prevailing View tool provides a snapshot of real time data and associated contextual data that provides a high-level overview of the current status of the NTS. Hover over the data items to see the definition, frequency of updates, and units of measure.
Report Explorer
Report Explorer provides data in several pre-defined report formats that are categorised according to publication schedule. The data is limited to a singular gas day or month.
Entry Zone Graphs
The Entry Zone Graphs tool provides users with up-to-date terminal and storage flow data. The graphs can be customised to show the most recent update, the last hour, or the last 24 hours.
User Defined Downloads
In the User Defined Download tool, you can access historic data by pre-set or customised periods of time, terminals, and/or individual entry points.
How to use the data tools
Data API service
We offer a Pull API service for all of our customers; customers can write their own code and select the data items that they are interested in downloading. The guidance below will help you use the service to retrieve gas market information data from our website.
Gas operations documents
Supplementary reports
Pre-emergency Commercial Tools
Daily storage and LNG operator information
The information contained in this spreadsheet is published on behalf of Storage and LNG Operators under the European Regulation EC 715/2009. The data in this spreadsheet is applicable for the current gas year. Data from previous gas years can be found in the next tab.
Calculated linepack utilisation
The report below collates the hourly supply and demand flow notifications received from NTS connected sites to calculate the NTS linepack minimum value in MCM that would result from these flow profiles. Please note, connected parties update their notifications continually throughout the day; therefore, the report is accurate only at the point of publication. The report is published three times throughout the day (06:00, 12:30 and 18:30) and will reflect latest Linepack and revised supply and demand flow notifications received.
Storage and LNG operator information
Contingency documents
Other reports
Trial Instantaneous Demand Info
Trial After the Day Trading Data
Webinars
We have developed a suite of pre-recorded webinars to provide guidance to the industry to aid decision-making. We are conscious that many of our operational customers work non-standard hours, so we felt that pre-recorded webinars would be beneficial as these can be viewed flexibly at times to suit operational needs.
2018 webinars
Similar to last year, this year’s Webinars will be pre-recorded to help provide more conveniently presented guidance and information. We fully appreciate that many of our operational customers work non-standard hours and therefore felt that pre-recorded webinars would be beneficial as these can be viewed at times that suit individual operational needs.
Having initially reached out to our customers, to ask which subject areas would be useful, the following webinars have been recorded. We will continue to ask the industry for subject matters to cover and record where necessary.
Operational data - detailed queries
TSO to TSO Nomination Process Contingency
2017 webinars
Similar to last year, this year’s Winter Webinars have been pre-recorded to help provide more conveniently presented guidance and information. We fully appreciate that many of our operational customers work non-standard hours and therefore felt that pre-recorded webinars would be beneficial as these can be viewed at times that suit individual operational needs.
Having initially reached out to our customers, to ask which subject areas would be useful, the following suite has been put together. This includes:
Gas system pressures and operational tools
- Recap summary of what affects NTS pressure
- What has changed recently
- What information is available from National Grid
- What further information is being explored to help with pressure issues
- Daily Agreed Gas Pressures Process & Operating Margins
- NEC background
- Gas Deficit Emergency Stages and Actions
- Information on Exercise Yield
Locational trades/constraint management
- Description of what Locational Energy Actions are
- How National Grid communicates in the event of a Locational Action being carried out
- A working example
- Overview of GB Remit Policy
- Navigating round the platform, including how to post an urgent market message
- Documents covered: Winter Outlook/Review & Consultation + Gas Ten Year Statement/Future Operability Planning + Future Energy Scenarios
- Content includes where the documents are published, how often they are published and what information they include for
- To include top 10 MIPI queries, including:
- Storage & LNG report – discrepancy in figures
- API’s – how to register
- CV missing data
- Actual offtake flows – missing data
- Summary of general topics covered
- Who attends?
- Promote the changing nature of the forums – more interactive
- Gas margins/deficit warnings
- Safety monitors
Over the past three years, we have utilised both live webinars and standard presentations to share information with the industry which has been accessed over 1,000 times. Thank you for your interest in these and please note we are striving to improve the media of communication used and to ensure that the topics presented are of value to our customers.
Should you have any questions in relation to any of the featured webinars, please do not hesitate to contact the Operational Liaison team at [email protected] who will be able to put you in touch with the appropriate subject matter expert.
2016 webinars
The 2016 webinars cover the following topics:
Introduction to the Winter Webinars & Guided tour of our Industry Information Website (Data Tools)
2015 webinars
Gas query directory
To help you efficiently find the right person to talk to in relation to specific National Transmission System operational gas queries, we have developed the following contact list and directory. We have based it on the most common queries we receive from our customers. Its purpose is to make finding the right subject matter expert within National Grid, quicker and easier than ever before.
Please note that if your query relates to a home or domestic gas connection or meter exchange, please contact your network operator. You can find who your network operator is on the Energy Networks Association website.