Masterton Solar & Energy Storage Project
PROJECT INFORMATION
The Masterton Solar & Energy Storage Project is a 118 MW solar farm in Waingawa, Wairarapa, with optional battery storage of up to 91 MW / 200–400 MWh. The Project will generate ~190 GWh annually — enough to power ~27,000 homes — and reduce carbon emissions by ~13,000 tonnes.
With strong grid access, proximity to local demand, and compatibility with ongoing agricultural use, it stands as a flagship clean energy initiative for the region.
LOCATION & GRID CONNECTION
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Waingawa, ~6 km south of Masterton, on 142 hectares of rural-zoned land off State Highway 2.
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Sheep grazing to continue post-construction.
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A 33 kV connection (avoids higher costs of 110 kV) into the Masterton Transpower Substation via short underground cable.
Current Status
The Masterton project has achieved Ready-to-Build (RTB) status. Key development milestones include securing the land over a long-term lease; receiving Resource Consent in 2024 (Carterton District Council Notified Resource Consent) as well as securing a variation under a S127 in 2026; signing the Transpower Works Agreement in 2025; and completing geotechnical investigations and technical advisory appointments.
NZ Clean Energy (NZCE) has commenced early works on site and is now in the final stages of selecting the Engineering, Procurement and Construction (EPC) contractor. Following contractor appointment, mobilisation and installation will begin, with main construction works expected to commence in early 2027.
NZCE has also signed a long-term Power Purchase Agreement (PPA) with Mercury for the renewable electricity generated by the project, providing long-term revenue visibility as the project progresses towards construction and financial close.
NZCE has purchased long lead item equipment and is finalising financing arrangements, with Financial Close targeted for December 2026.
As we move closer to construction, we will continue to engage with the local community, businesses and stakeholders.
Please keep up to date with our progress through this website page or our LinkedIn page.
CONSTRUCTION TIMELINE
& LIFECYCLE
Duration
Estimated 12–18 months.
ECONOMIC & social benefits
Carbon Reduction: ~13,000 tonnes annually.
Energy Supply: Powers ~27,000 homes.
Grid Efficiency: Low-cost connection and proximity to demand.
Land Suitability: Flat, unobstructed, and agriculturally compatible.
Jobs Created: Over 100 during construction;
~20 for operations and maintenance.
Local Demand: Immediate proximity to Transpower substations.
Dual Use: Maintains agricultural productivity (sheep grazing).
Regional Impact: Supports Wairarapa’s clean energy transition.
Employment: Boosts local job creation and long-term economic activity.
As we move forward to construction we will be continuing
our engagement with the local stakeholders.
