The NOA is our recommendation for which reinforcement projects should receive investment during the coming year to facilitate the development of an efficient, coordinated, and economical system of electricity transmission. This must be consistent with the National Electricity Transmission System Security and Quality of Supply Standard (NETS SQSS), as well as the development of efficient interconnection capacity.
The NOA methodology describes how we assess the required levels of network transfer, the options available to meet this requirement and recommends options for further development. The methodology also describes the end to end process from the analysis to the publication of the NOA report and identifies the roles and responsibilities of the Electricity System Operator (ESO) and onshore Transmission Owners (TOs). The holistic network design (HND) and offshore transmission network review (OTNR) are considered in our NOA work.
NOA 2023 methodology
The NOA methodology describes how we assess major National Electricity Transmission System (NETS) reinforcements to meet the requirements identified from the outputs of the Future Energy Scenarios (FES) and Electricity Ten Year Statement (ETYS). It also integrates with the Holistic Network Design Follow-Up Exercise (HNDFUE) that is part of the transitional Centralised Strategic Network Plan (CSNP).
In this document, we explain how the options submitted by stakeholders are assessed in the NOA and how we make the recommendations.
Learn more about the NOA methodology
We have finished our review of the NOA 2022/23 methodology and submitted it to Ofgem on 27 July 2022. Thank you for your feedback, and link to the 2022-23 methodology.
In 2020 the University of Melbourne reviewed the NOA Process as part of an innovation project. Download their report on the economic aspects.
In 2020 the University of Melbourne reviewed the NOA Process as part of an innovation project. Download their report on the technical aspects.
Ofgem have approved this year's NOA methodology and the letter is now available.