en.Wedoany.com Reported - New Zealand state-owned enterprise Meridian Energy has announced that its project application for the Waiinu Energy Park has been referred by the country's Minister for Infrastructure for consideration under the Fast-track Approvals Act.
This places the project on an accelerated approval pathway, bypassing standard resource consent processes. Located northwest of Whanganui on the west coast of the North Island, the Waiinu Energy Park plans to include 56 wind turbines (with a total capacity of 392MW), a 230MW solar photovoltaic farm, and a grid-scale battery energy storage system (BESS) with an undisclosed capacity.
According to Meridian, the total generation capacity of 622MW will make this project one of the largest single renewable energy developments in New Zealand's history, expected to generate approximately 1,600GWh of electricity annually. The main site is located on farmland between Waitōtara and Waiinu beaches, more than 500 meters from the coastline, with the proposed grid connection point situated north of State Highway 3. Site selection was based on strong and consistent wind resources, proximity to existing transmission infrastructure, and relatively flat terrain to reduce construction complexity.
Meridian CEO Mike Roan stated that this referral reflects the company's extensive preparatory work completed before the substantive consent application, which is planned for submission by the end of 2026. He noted that the fast-track process requires significant upfront effort, and the company has taken time to ensure the application is as detailed and thorough as possible, incorporating feedback from iwi, hapū, and local communities. He added that large-scale projects of this nature rely on the financial strength of vertically integrated power companies, and Meridian's robust balance sheet enables it to drive such innovative developments to provide the new generation capacity New Zealand needs.
New Zealand's Fast-track Approvals Act, which came into effect at the end of 2024, processes applications through an expert panel pathway rather than the standard Environment Court route, aiming to reduce approval timelines and costs for large infrastructure projects. Projects still require environmental assessments and public consultation, but within a structured, time-bound framework. A fast-track referral does not constitute project approval; Meridian must still submit a substantive application, which will be evaluated by an expert panel before a consent decision is made. If approved, detailed design and a final investment decision at the board level will be required before construction can begin. According to Meridian's project page, construction could start by the end of 2028, with a peak workforce of 300 to 350 workers on site, potentially totaling over 3,000 people throughout the construction period.
The Waiinu referral is the latest step in Meridian's expanding generation investment plan beyond its core hydro portfolio. Meridian has already commissioned New Zealand's first grid-scale battery energy storage system at the Ruakākā site near Whangārei, with a capacity of 100MW/200MWh, supplied by Saft using LFP chemistry, providing fast-response frequency control services and supporting renewable energy integration. The battery component at Waiinu will extend this capability to a larger-scale project on the west coast of the North Island. Additionally, Meridian has received a draft decision proposing to relax access restrictions on emergency water storage at Lake Pūkaki, covering 545GWh of water stored between elevations of 518 meters and 513 meters. The Waiinu referral represents a long-term supply-side investment, complementing this short-term flexibility measure to add new renewable generation capacity while increasing short-term dispatchability through hydro storage strategies.
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