Transpower’s $47m Redclyffe Rebuild Gets Green Light to Boost Hawke’s Bay Power Resilience

Why It Matters

The upgrade strengthens grid reliability in a climate‑vulnerable region, safeguarding businesses and households while supporting New Zealand’s broader electrification goals.

Key Takeaways

• Redclyffe rebuild costs $47 million, starts November 2026
• 220 kV switchyard will be raised above 1‑in‑450‑year flood level
• New transformer doubles regional import capacity for Hawke’s Bay
• No power interruptions expected during construction, per Transpower

Pulse Analysis

New Zealand’s national grid operator, Transpower, is moving quickly to shore up a critical node in the country’s electricity network after Cyclone Gabrielle exposed severe vulnerabilities in Hawke’s Bay. The February 2023 storm knocked out power for weeks, marking the region’s worst outage on record and highlighting the need for infrastructure that can survive extreme weather and seismic events. As climate change drives more frequent high‑intensity storms, regulators and utilities are under pressure to embed resilience into core transmission assets, making the Redclyffe project a bellwether for future upgrades.

The $47 million rebuild, cleared by the Commerce Commission, will commence in November and finish by late 2027. Central to the plan is a new 220 kV switchyard engineered to sit above the 1‑in‑450‑year floodplain, dramatically reducing the risk of water‑related damage. An additional high‑capacity transformer, installed last year, already doubled the amount of electricity that can be imported into Hawke’s Bay, and the upcoming works will further boost earthquake resilience. Transpower assures that the upgrade will not interrupt local supply, coordinating closely with Unison Networks and Firstlight Network to keep the grid online.

For businesses and households in Hawke’s Bay and Tairāwhiti, the enhanced transmission capacity translates into greater reliability and the ability to support a faster transition to electric heating, transport and industry. Grid resilience also reduces the financial risk of prolonged outages, a factor that can influence investment decisions and insurance premiums. The Redclyffe project demonstrates how public‑private collaboration and rigorous regulatory review can accelerate climate‑adapted infrastructure, setting a precedent for other regions in New Zealand and beyond that face similar flood and earthquake threats.