Publications and resources

Each year Transpower publishes an Annual Planning Report which details the status of all projects that Transpower considers possible over the next 15 years.

Tower foundation replacement involves replacing the steel at and below the level of the ground, to ensure they continue to maintain the structural integrity of the tower.

The Electrical Code of Practice sets minimum safe electrical distance requirements for overhead electric line installations/other works associated with the supply of electricity to consumers....

This is Transpower New Zealand Limited’s annual Quality Performance Report. It sets out operational data that enables Transpower’s stakeholders to make an assessment of the...

The Electricity (Information Disclosure) Regulations 1999 form part of the Government's regulatory regime for the electricity sector. The purpose and nature of these Regulations is...

This report describes Transpower's financial and operational performance for the financial year ending 30 June 2012.

Over time, transmission poles may require replacement due to normal age-related wear and tear or to ensure safe ground clearances are maintained.

Helicopters are a vital part of inspecting and maintaining our 11,800 km of transmission lines  throughout the country.

We routinely check and assess the condition of that equipment to ensure the National Grid continues to provide a safe and secure power supply for the country.

Tower painting is part of our routine maintenance activities to ensure they continue to provide a reliable service over their expected lifetimes.