This page contains updates and disclosures relating to our Regulatory Control Period 4, from 1 April 2025 – 31 March 2030
Documents in development and will be published as they become available
Integrated Transmission Plan (ITP)
The ITP is a suite of documents outlining our 10-year plans. It brings together our services, expenditure forecasts and asset management plans. See downloads below.
2025
| Title | Description |
|---|---|
| ITP Narrative | An overarching document that lays out a high-level overview of who we are, our plans and summarises our service measures, revenue and expenditures. |
| Asset Management Plan | Explains our asset management framework, our management of each asset class and includes a summary of planned works. |
| Service Measures Report | Defines our service offering and performance targets, and explains how we use these in our business. |
| Transmission Planning Report | Identifies future plans for the grid and regional development plans. |
| RT01 Schedules | Detailed forecasts of our expenditure and service measures. (Downloadable Excel file). |
| ITP Glossary | Explanation of acronyms used throughout our ITP documentation. |
| ITP Compliance Report | Explains how the ITP meets our regulatory requirements. |
Information Disclosure Regulations – Individual Price-Path (IPP) Annual Compliance Statement and Information Disclosures (ID)
| Year | IPP Annual (including Smoothed Maximum Allowable Revenue (SMAR) update) | Information Disclosure | Pricing Compliance |
|---|---|---|---|
| 2025/26 | Directors' certificate |
Other documents
Documents provided to the Commission in response to these notices will be posted in this section, along with event reports for material unplanned interruptions (under the IPP) during the regulatory period.
Price settings for RCP4
- Maximum Allowable Revenue
Title Description Upload date RCP4 revenue model Maximum allowable revenue as set for IPP determination 2025 - 2030 November 2024 Update to allowable revenue as determined in November 2025 Update to allowable revenue as determined in November 2026 Update to allowable revenue as determined in November 2027 Update to allowable revenue as determined in November 2028
- RCP4 Indicative Transmission Charges
Title Description Upload date RCP4 indicative transmission charges
Dec 24Indicative forecast transmission charges by customer and per Grid Exit Point (GXP) and Grid Injection Point (GIP) to the end of RCP4 as forecast at December 2024. December 2024