As the Central Data Service Provider for the gas industry, Xoserve maintains and manages the central database. The database holds all of Great Britain’s gas consumption points (‘Supply Points’) and provides a forecast of each system user’s gas demand for the current and following day, while also performing the allocation of the total actual system usage after the day across all users. Gas forecasting and allocation are done at an aggregated level, grouping sites by geography and size of their typical annual usage.
On 1st June 2017, Xoserve implemented a new suite of systems as part of its UK Link Programme. These changes included the introduction of a new supply point register and made changes to the gas allocation systems. These new systems brought into effect a number of major ‘rule’ changes, which had been designed by gas industry parties over several years. These changes were intended to make daily gas allocation fairer and more transparent.
One of the key changes introduced was a new daily concept of ‘Unidentified Gas’ – an amount of gas which could not be attributed directly to any system user. As only a minority of supply points (less than 20% of annual usage and fewer than 1,000 sites) submit daily reads into the allocation process, the remainder of gas is allocated based on estimates and historic profiles based on sample data.
In its role at the centre of the gas industry, Xoserve has been trying to support its customers to understand and manage Unidentified Gas further. In addition, Xoserve is looking to increase its analytical capability, and use more advanced technology with a number of aims:
- Develop a better understanding of the drivers of daily Unidentified Gas
- Develop a model which can explain historic daily levels and fluctuations, and predict future movements at a daily and regional level
- Undertake a radical review of the forecasting/allocation model used for the Non-Daily Metered sites to identify whether any significant improvements could be made, which would in turn reduce/mitigate Unidentified Gas levels and variation
- Undertake analysis of the predicted versus the actual consumed energy as a way of validating the models currently used for forecasting and allocation
- Develop projections of the time required for all meters to be read, and the amount of actual energy as yet unrecorded, to give a view of the eventual level of Unidentified Gas after all settlement processes have taken place
- Identify any particular sites that have significant variances between allocation and consumption on a continuing basis
We will keep customers updated on this important issue via this page.
Following funding approval in early July, we have now mobilised the UIG Task Force, progress will be reported at the DSC Change Management Committee at: https://www.gasgovernance.co.uk/sites/default/files/ggf/2018-08/8.%20XRN4695%20UIG%20Taskforce%20Update.pptx
Documents produced from the team will also be published here
The link to the latest version of the UIG Issues Tracker can be found below
Title Last Updated Format UIG Update from Ranjit Patel, CCO 5th September 2018 Iss 02 – WAR Band Analysis as at September 2018 1st September 2018 Iss 13 Simulation of Impact of ALP and DAF Uplift Factors to UIG 22nd August 2018
Title Last Updated Format UIG Resolution – Weekly Update 14th September 2018
UIG Resolution – Weekly Update Archive
Title Date File Type XRN4695 UIG Taskforce Update 12th September 2018
Solution Options Meeting 22nd November 2017
Title Date File Type Solution Options Meeting Overview 22nd November 2017 SWOT Analysis 22nd November 2017
Solution Options Meeting 13th November 2017
Title Date File Type Solution Options Meeting 13th November 2017 Unidentified Gas and NDM Allocation Proposal
This information has been provided by E.ON
13th November 2017 Unidentified Gas (UIG) Solutions Workgroup – Output 13th November 2017
Awareness, Causes and Mitigations 20th October 2017
Title Date File Type Awareness, Causes and Mitigations 20th October 2017
For more information regarding this UNC request please click here
Daily calls – 10:00am
The purpose of these calls are to review progress against actions agreed at the working group.
To join this meeting please use the details below:
Birmingham 0121 210 9185
Glasgow 0141 202 0815
Leeds 0113 301 0015
London 020 7950 1251
Manchester 0161 601 3094Participant Access Code – 76451578#
Action Log Date File Type
Title Date File Type
Title Date File Type WAR Band EUCs – Briefing Pack 22nd December 2017 Reconciliation Report by month 4th August 2018 XLSX DM Read Rejections for Class 1 Sites 6th February 2018 Title Date File Type Amendment Invoice Validation 21st November 2017
The report shows the primary reconciliation processed within a Billing Month, against the original Supply Month. Equal and opposite values are processed as UIG reconciliation
AUGE (Allocation of Unidentified Gas Expert) Statement for 2017/18
Unidentified Gas Weighting Factors for Gas Year 2017/18
Link to Joint Office page for 2017/18 AUG (Allocation of Unidentified Gas) matters
Please see the UIG section of the Education and Resources page for more information.