Allocation of Unidentified Gas Expert (AUGE)

The AUGE addresses the issue of gas used in Great Britain that is not measured and accounted for in settlement.

Potential Sources of Unidentified Gas (UIG)

The AUGE identifies and analyses potential sources of Unidentified Gas (UIG) and proposes a methodology for sharing it fairly between market participants using Weighting Factors. These factors are approved by the Uniform Network Code (UNC) Committee for use in Xoserve’s settlement and invoicing systems.

Allocation of Unidentified Gas Expert (AUGE)

Appointment

After an initial 5-year period, Engage Consulting was re-appointed as the AUGE in August 2025. We are currently developing a methodology that will determine the Weighting Factors for the period October 2028 to September 2031. 

A fair allocation of UIG supports effective competition, as it influences the wholesale charges between shippers and suppliers and, therefore, the prices that suppliers offer customers. We act as a neutral party that applies the AUG framework laid out in the UNC agreed by industry parties and do not make policy. 

Transparency & Communication

Our methodology and the Weighting Factors are set out in the AUG Statement. 

We maintain transparency and communicate with industry stakeholders through two-monthly industry meetings to discuss process and methodology. Timings and agendas for these meetings are available on the website of the  Joint Office of Gas Transporters, along with the live version of the AUG Statement. We are always happy to hear from stakeholders with questions or ideas for improvement. 

Contact Us
Engage Consulting combine their deep understanding of settlements processes with a consistent and open approach to stakeholder engagement which has allowed them to overcome the early challenges associated with a change in methodology.
XOSERVE
Chris DwyerHEAD OF CONTRACTS AND PROCUREMENT, XOSERVE
I’ve had the pleasure of working with Engage’s consultants for over six years on a large, complex, wide-ranging, technical and challenging project of critical importance to our members and government.
Energy UK
Daisy CrossHEAD OF FUTURE RETAIL MARKETS, ENERGY UK
Engage Consulting has been instrumental in establishing the Alt HAN Co; ensuring the complex journey from inception to being an independently operational business, was delivered with professional and invaluable expertise and support.
Alt HAN Co
Paul CooperMANAGING DIRECTOR, ALT HAN CO
The 105 number for customers to call in a power cut was a key project for the ENA to deliver on behalf of electricity network operators. Engage overcame the many multi-stakeholder challenges – enabling us to obtain a three-digit number from Ofcom.
David Smith
David SmithCEO, ENERGY NETWORKS ASSOCIATION
We brought Engage in, as industry experts, to review our systems, processes and controls – and ensure that they would support our next phase of growth. The report they provided us with was clear and insightful – and enabled us to make real improvements across our business.
Darren Braham
Darren BrahamFINANCE DIRECTOR, FIRST UTILITY
Engage analysed gigabytes of our portfolio data and identified customer accounts causing the imbalance. They also successfully identified the key causes, provided detailed recommendations and proposed a model settlements function to allow us to improve our processes and manage future imbalances.
Lesley Baxter
Lesley BaxterFINANCE DIRECTOR, TOTAL GAS & POWER
Engage applied their detailed industry knowledge to develop a robust methodology for quantifying the impact of these adjustments, applied this to large volumes of our metered data, and produced a far more accurate determination of our losses.
SP Energy Networks
Allan HendryHEAD OF LICENCE & REVENUE, SCOTTISH POWER ENERGY NETWORKS
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