Under the RIIO (Revenue = Incentives + Innovation + Outputs) regulatory model, the companies’ performance is assessed by the regulator, using a set of primary outputs. These demonstrate how they will have delivered end services to consumers, customers and stakeholders.

The Network Output Measures (NOMs) Methodology is designed to show that the three transmission companies are providing consumers with long-term value for money. It provides a joint basis for measuring asset risk which is designed to direct investment in the right areas, enabling effective management of network risk. Using a risk-based approach, the transmission companies will assess their asset base and  direct investment in order to control the risk those assets present to the network, to health & safety, and to the environment. This will ensure the transmission companies will continue to deliver their primary outputs in the future.

NOMS Documents

NOMS Methodology
Issue 18
File Type: pdf
Published: 21 May 2018
Network Asset Risk Annex (NARA)
Issue 18
File Type: pdf
Published: 21 May 2018
Assumptions Log
File Type: pdf
Published: 21 May 2018

Providing your feedback

We invite you to review the latest versions of the proposed Network Output Measures (NOMs) methodology. These are also presented on NGET's and SPT's websites.

This is the third consultation associated with this methodology. In this instance, the consultation is focussed primarily on seeking Stakeholder feedback on the changes that have been made following the previous consultation events, but all feedback on the overall methodology will be welcomed.

NOMS Methodology Consultation

NOMS Methodology Consultation
May 2018
Closing Date: 18 Jun 2018

Contact us

Transmission NOMS