Operational Performance for the 6 months ended 31 Dec 2025
23 January 2026
OPERATIONAL PERFORMANCE FOR THE 6 MONTHS ENDED 31 DECEMBER 2025
Operational performance highlights:
• 637,247 electricity network connections, up 1.3% on 31 December 2024
• 4,543 GWh electricity volume distributed in the period, up 1.3% on December 2024 comparative period.
Commentary:
The six months ended 31 December 2025 has seen network connection numbers continue to grow across Vector’s Auckland electricity network. In the year to 31 December 2025, total electricity connection numbers grew by 1.3%. However, new connections for the six months ended 31 December 2025 are 1.0% lower than in the six months to 31 December 2024. Electricity distributed volume was up 1.3% compared with the six months ended 31 December 2024, largely correlating with cooler winter temperatures, particularly in August 2025, where more electricity was used for heating. Residential volumes were up 0.6% while business volumes were up 1.9%.
There has been a 0.4% decrease in total connections on Auckland’s gas distribution network over the year to 31 December 2025. New gas connections in the six months to 31 December 2025 were down 50.9% on the same period last year. There was a net reduction of 317 customers in the six months to 31 December 2025. Gas distribution volume for the six months to 31 December 2025 was down 4.5% compared with the prior comparative period, due to lower demand from the residential, industrial and commercial sectors.
SAIDI minutes for normal operations (planned) for the nine months ended 31 December 2025 is higher than the prior comparative period however still within the regulatory threshold. While SAIDI minutes for normal operations (unplanned) for the nine months ended 31 December 2025 are within the regulatory threshold, they are higher than the prior comparative period and include the impact of Cyclone Tam, which also triggered a Major Network Event beginning on the 15th of April 2025 and lasting until mid-morning of the 18th of April. We note that SAIDI results are preliminary and subject to audit.
6 months ended 31 December | |||
|---|---|---|---|
Electricity | 2025 | 2024 | % change |
Customers (1, 4) | 637,247 | 628,990 | 1.3% |
New connections Net movement in customers (2) | 6,710 5,141 | 6,778 4,660 | (1.0%) 11.0% |
Volume distributed (GWh) | 4,543 | 4,484 | 1.3% |
SAIDI (minutes) – 6 months to 31 December (3) | |||
Normal operations – unplanned | 77.6 | 62.6 | 24.0% |
Normal operations - planned | 46.6 | 38.9 | (19.8%) |
Major network events | 24.2 | 16.3 | 48.5% |
Total | 148.4 | 117.8 | 26.0% |
Gas distribution | |||
Customers (1, 4) | 120,304 | 120,761 | (0.4%) |
New connections Net movement in customers (2) | 341 (317) | 694 407 | (50.9%) N/A |
Distribution volume (PJ) | 6.3 | 6.6 | (4.5%) |
1. As at 31 December.
2. Net number of customers added during the period includes disconnected, reconnected, and decommissioned ICPs.
3. SAIDI (minutes) for the nine months ended 31 December 2025 is an unaudited value and subject to change.
4. Billable ICPs.
The Excel version can be found at: Vector news and articles | Vector Limited
ENDS
Investor contact
Jason Hollingworth, Chief Financial Officer, Vector
Jason.hollingworth@vector.co.nz, 021 312 928
Media contact
Matthew Britton, Senior Communications Partner, Vector
Matthew.britton@vector.co.nz, 021 224 2966