Turitea Windfarm
Project Overview
New Zealand’s largest windfarm, Turitea, came with equally large challenges. The site’s steep slopes, exposed ridgelines, and unpredictable weather — including snow, heavy rainfall, and gale-force winds — created constant risks of erosion and sediment runoff. Cold soil temperatures further slowed strike rates, while access was often restricted by cranes, large-scale construction machinery, and the need to run hoses hundreds of metres across difficult terrain.
Scope
We provided long-term stabilisation and revegetation of cut batters, dumpsites, drains, sediment ponds, and other earthworks areas progressively as the project proceeded through to handover stage.
33ha over 12 months.
Our Solution
Stabi-Mulch
-
Application rate 2500-3500kg/ha dependent on site specifics, slope gradient etc
-
A mix of Pasture seed blend, winter active species to encourage growth in the winter periods
-
Starter Fertilizer
-
Polymer to provide further temporary stabilisation
Challenges
-
Running hundreds of length of hose to access certain areas only accessible by foot.
-
Being shut down due to extreme winds.
-
Snow Onsite
-
Extreme rain events
-
Cold growing conditions
-
Working around large scale machinery. Cranes, General construction.
Results
-
Successfully completed entire project with zero rework, injuries, or incidents
-
Superior performance compared to other hydroseeding methods
-
Faster grass establishment, reduced erosion, and less maintenance
Stephanie Kirk, Beca Senior Environment Scientist.
"I have been impressed with Instant Green application rates. When compared with other Hydroseeding we have used before, it has performed well after heavy rainfall events meaning less maintenance and quicker stabilisation of exposed areas."
