Approval of Controversial Waitaha Hydro Project Sparks Legal and Safety Concerns

The $200m Waitaha hydro project gains fast-track approval despite conservationist warnings of magnitude 8 earthquake risks and a potential loss of natural character.

By: AXL Media

Published: Apr 23, 2026, 4:01 AM EDT

Source: RNZ Pacific

Resurrecting a "Zombie Project" via Fast-Track

The Waitaha scheme has a contentious history, with initial investigations dating back to 2004. In 2019, the then-Environment Minister David Parker formally vetoed the application, citing the "near-pristine" nature of the area and its intrinsic wilderness value. Critics, including the Green Party, have labeled the current approval a "zombie project" brought back to life through the Fast Track Approvals Act. Despite the high construction cost—serving approximately 12,000 homes at nearly $20,000 per household—the National-led government has fulfilled its promise to prioritize the scheme's development.

Engineering Warnings and Alpine Fault Risks

One of the most significant challenges facing the project is its proximity to the Alpine Fault, situated just three kilometers from the proposed weir. Engineering geologist Kevin England and health and safety specialist Matthew Bennett have issued an open letter to Westpower’s board, highlighting a 75 percent probability of a magnitude 8 or higher earthquake in the next 50 years. Their analysis suggests a "100 percent chance" of fatalities if the tunnel collapses during construction, noting that the project’s risk level is five to ten times higher than standard high-risk industrial activities.

Environmental Impact and Department of Conservation Resistance

The Department of Conservation (DOC) and the New Zealand Conservation Authority have remained staunchly opposed to the development. DOC experts warned that the scheme would introduce semi-industrial activity into an area of international ecological significance, severely compromising the habitat of the long-tail bat (peka peka), blue duck (whio), and various lizard species. According to the panel's findings, the project will result in a fundamental loss of "natural character, solitude, and remoteness" that defines the backcountry-remote zone of the Waitaha Valley.