Renewables supplied nearly all generation. Hydro output rose 19.6% year-on-year and solar reached a record 373 GWh.
+11.3 percentage points year-on-yearDIGITAL.NZ INTELLIGENCE · INFRASTRUCTURE BRIEFING 04
New Zealand’s renewable electricity is a strategic advantage. Turning it into dependable AI and data-centre capacity requires grid access, firm supply, new generation and disciplined contracting.
THE FINDING
New Zealand can generate an exceptionally high share of electricity from renewable resources. That national average is valuable, but it does not prove a particular data-centre site can secure hundreds of megawatts at the required date and reliability.
Large compute projects must establish where generation is located, whether transmission can deliver it, what happens during dry years and peaks, and which contracts make new supply financeable.
WEATHER MATTERS
Renewables supplied nearly all generation. Hydro output rose 19.6% year-on-year and solar reached a record 373 GWh.
+11.3 percentage points year-on-yearJanuary and February hydro inflows were the lowest on record for those months. Coal generation increased substantially to compensate.
THE FIRMING TESTDELIVERY FUNNEL
A large development pipeline signals interest. Only projects that reach finance, consent, connection, construction and commissioning can support new compute load.
288 generation projects were recorded in October 2025. Many are early-stage and may compete for land, equipment, capital and grid access.
Projects reported as having reached a final investment decision—about 3.1% of the total pipeline capacity.
Publicly assessed in December 2025, with 787 MW of solar expected among projects completing over the following 18–24 months.
Average time from entering Transpower's connection queue to completion for the projects then under construction.
Pipeline stages use different evidence. “Under construction” includes public information not always updated in the Transpower-reported committed category, so these figures should not be added together.
SOSA 2026 says near-term supply remains secure provided committed generation and battery projects are delivered on time.
Lower domestic gas availability and LNG assumed from 2029 create a potential risk window before additional firm supply arrives.
The national winter energy margin falls below the lower security standard, indicating further investment is required.
SYSTEM INDICATORS
These are national or asset-level indicators—not an offer of connection capacity or electricity supply.
Full-year electricity mix
288 projects, all stages
Final investment decision reported
Queue entry to project completion
Approved expansion
Values are source-stated and dated. A generation asset’s nameplate or operating maximum is not equivalent to uncontracted energy or network capacity available to a project. Pipeline, committed and construction figures use different evidence and must not be added together.
PROJECT PROOF STACK
A formal grid or distribution connection study must confirm the megawatts, technical works, queue position and timing.
Dual supply, fault levels, voltage, reactive power, backup generation and restoration pathways shape real uptime.
Hydro variability and intermittent wind or solar require storage, flexible demand, firm generation or contracted hedges.
Spot exposure can be volatile. PPAs, hedges and collars must match the load profile and investment horizon.
Coordinating generation, batteries, transmission and demand can improve the system rather than only consume existing capacity.
Annual renewable share is not the same as matching consumption with low-carbon supply every hour and at the same grid node.
LOCATION LENS
Manapouri provides an 800 MW scale reference and Southland offers the export-compute thesis. New loads still need firm contracts, grid studies and credible additional supply.
HYDRO ↗Geothermal provides weather-independent renewable generation. Tauhara’s 174 MW illustrates the value of firm low-carbon supply in a hydro-heavy system.
FIRM ↗The country’s largest cloud and data-centre cluster benefits from demand, fibre and interconnection density, while large new electrical connections depend on metropolitan grid delivery.
DEMAND ↗The approved HVDC upgrade will increase inter-island transfer from 1,200 MW to 1,400 MW and strengthen access to generation across both islands.
GRID ↗CORE SOURCES
Digital.nz can prepare a location screen, energy-source review, grid-risk brief or evidence pack for investors and operators.
Discuss an energy brief →