This interim guidance note takes a principles-based approach on our expectations for expenditure forecasting in relation to emissions reduction. It covers topics related to prescribed transmission services and standard control services for electricity distribution, regulated pipeline services for gas expenditure, and other related matters such as tariffs and alternative control services, including public lighting.

In preparing the interim guidance note, we have considered stakeholder feedback received during our 2024 review of the Expenditure Forecast Assessment Guidelines, Regulatory Investment Test Guidelines and Cost Benefit Analysis Guidelines.