We manage the central database holding all gas consumption points (Supply Points) and analyse and report key data.
Using this gas industry supplied data, our daily processes calculate Unidentified Gas (UIG) levels. This is an amount of gas which cannot be directly attributed to any system user. A major part of our work is to support the gas industry to understand, manage and resolve UIG in a better way.
The UIG Task Force is increasing our analytical capability and use of advanced technology to:
- develop a better understanding of the causes and reasons for daily UIG
- develop a model to explain historic daily levels and fluctuations, and predict future movements at daily and regional levels
- review the forecasting and allocation model used for Non-Daily Metered sites to identify improvement potential to reduce UIG levels and fluctuation
- better validate the models used for forecasting and allocation
- identify and report sites with significant variances between allocation and consumption on a weekly basis
We are also working to develop projections of the time required for all meters to be read, and the amount of actual energy as yet unrecorded. This gives a view of the level of UIG after all settlement processes have taken place.
The link to the latest version of the UIG Investigation Tracker can be found below
Title Last Updated Format UIG Task Force Sprint Two Update UIG Task Force Update to Ofgem November 2018 13th November 2018 UIG Task Force Sprint Four Update 8th November 2018 UIG Task Force Sprint Three Update 25th October 2018 UIG Task Force Sprint Two Update 12th October 2018 UIG Task Force Sprint One Update 27th September 2018 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 XCE1750 – UIG Task Force Update-Issues Management Tracker now published
16th August 2018 Xoserve publishes Mod 0431 reconciliation exercise results 8th August 2018 Latest News XCE 1742 – UIG Task Force 2nd August 2018 XCE1733 – Update on UIG from Sian Jones CEO 13th July 2018 Xoserve CEO Update on Unidentified Gas (UIG) 21st May 2018
Title Last Updated Format UIG Resolution – Weekly Update 9th November 2018
UIG Resolution – Weekly Update Archive
You can access the DSC Monthly Updates on the Joint Office of Gas Transporters website.
Title Date File Type WAR Band EUCs – Briefing Pack 22nd December 2017 Reconciliation Report by month 31st October 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.
Please see the UIG section of the UK Link Information Library for UIG FAQs.
In our role managing the Supply Points database, we provide:
- forecasts of current day gas demand per system user
- forecasts of next day gas demand per system user
- allocation of the total actual system usage
This work groups sites by geography and size of their typical annual usage.
The process is meant to make daily gas allocation fair and transparent.
It is through this process that UIG levels are revealed. But, with less than 20% of annual usage and fewer than 1,000 sites submitting daily reads into the allocation process, the remainder of gas is allocated based on estimates and sample data. UIG is also corrected over an extended period of time. This means higher and less predictable levels of UIG than expected and significant challenges for gas shippers.
The industry has asked us to lead on fixing the problem, with our UIG Task Force investigating and making recommendations to reduce levels and volatility.
UIG 2017 Communications:
Title Last Updated Format Xoserve CEO UIG Event Update November 2017 28th November 2017 Xoserve CEO UIG Update Nov 2017 20th November 2017 XCE1650 – UNC Modification 0634 Daily Metered Supply Meter Points 20th November 2017 XCE1643 UIG Important Information regarding DM Sites 6th October 2017 XCE1625 Sian Jones CEO provides a further update on UIG 7th September 2017 XCE1607 Andy Malins National Grid provides a further update on UIG – Issued on behalf of National Grid 4th August 2017 XCE1599 Sian Jones CEO provides a further update on UIG 1st August 2017 XCE1588 Sian Jones CEO provides an update on UIG 5th July 2017 XCE1584 Unidentified Gas (UIG) 30th June 2017
UIG 2017 Events Material:
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