Solar Farms in New Zealand: How They Work and Why Trilect Solar Leads the Way
What is Solar Energy?
Solar energy comes from the sun’s radiation, which can be used to produce heat and generate electricity.
Unlike fossil fuels, solar technologies create clean energy without releasing air pollution or greenhouse gases during operation.
Because the sun is an abundant and virtually endless source of radiation, harnessing it does not deplete the resource—making solar energy renewable.
With the right technology, solar power is considered future-proof, holding the potential to meet the world’s energy needs for generations to come.
The Benefits of Solar Farms
Lower carbon emissions
The benefits of solar farms include much lower carbon emissions compared to fossil fuels, less greenhouse gases being released, and it uses an energy with a longer lifespan.
Sustainable land use with agrivoltaics
Solar farms also have the potential for more sustainable land usage – agrivoltaics is the term used when agriculture and solar farms are combined on the same plot of land.
Economic benefits
Economic benefits of solar farms include the creation of jobs (manufacturing, transportation, installation, operation and maintenance), infrastructure development, and lower energy costs for consumers.
Supporting New Zealand’s renewable energy targets
The New Zealand Energy Strategy 2011-2021 set a target for 90% renewable electricity by 2025. Solar farms help increase this percentage.
The Rise of Solar Farms
As of 2024, New Zealand had eight operational solar farms, with 40 more in various stages of development. Over the past three years, the pace of solar installation in New Zealand has more than doubled, with 31,105 solar panel systems installed in 2021 and 62,707 as of June 2024.
The global solar market reached new heights, with approximately 600 GW installed in 2024, with the Asia-Pacific region accounting for 70% of the new capacity. Global solar PV (Photovoltaic) installations set another record in 2024, reaching 597GW – a 33% increase over 2023.
There was a global rapid growth in solar industries in 2024. Solar’s growth will continue in the long term, as it is driven by the need to replace fossil fuels to combat climate change.
Energy Minister Simon Watts of the New Zealand Government announced, in June 2025, a brand new ‘Solar on Farms’ initiative, which aims to support farmers in taking the next step towards installing solar and battery systems. The goal is for this initiative to help farmers reduce energy costs, increase on-farm resilience, and allow them to gain greater control over their power use.
How Do Solar Farms Generate Electricity?
Solar farms produce electricity using large arrays of photovoltaic (PV) panels, which convert sunlight into energy. Here’s how the process works:
- PV Solar Panels: These panels contain semiconductive cells that interact with sunlight. When photons from the sun hit the cells, they excite electrons, creating an electric charge. This generates Direct Current (DC) electricity.
- Inverters: The DC electricity produced by the panels isn’t compatible with most homes or businesses. Inverters convert it into Alternating Current (AC) electricity, which can be used in the power grid.
- Batteries (optional): Some solar farms include batteries to store excess electricity. This stored energy can be released later, helping maintain a consistent power supply even when sunlight is limited.
- Grid Integration: The electricity from the solar farm is fed into the local electrical grid—a network of wires and substations that deliver power to homes, businesses, and other facilities. Proper grid connection ensures the energy generated can be distributed efficiently and reliably.
By combining these components, solar farms can generate clean, renewable energy at scale, contributing to a sustainable electricity supply.
How do solar farms differ from residential solar power systems?
Residential solar systems are designed to power individual homes through rooftop or ground-mounted panels, providing energy independence and helping to reduce electricity bills.
On a larger scale, solar farms—also known as grid-scale installations—are expansive ground-mounted systems that feed directly into the national grid. These farms generate enough electricity to power entire communities, making them a key driver in New Zealand’s transition to renewable energy.
Can Solar Farms Be Recycled or Repurposed?
Photovoltaic (PV) solar panel systems generally have a lifespan of 30–35 years, though many continue producing electricity well beyond that timeframe.
When panels reach the end of their life cycle, recycling or repurposing them unlocks valuable raw materials and components. This process not only recovers resources but also significantly reduces the environmental impact of disposing of panels in landfills, supporting a more circular clean energy system.
In New Zealand, most parts of a solar panel can already be recycled through existing facilities. However, achieving close to 100% recovery would require a specialised solar panel recycling plant.
Encouragingly, new recycling services and businesses are emerging locally, specialising in solar panel recovery. These initiatives reduce waste entering landfills or general recycling plants that are not equipped to process all solar panel materials.
Environmental considerations when it comes to large-scale solar projects:
Land Use & Conservation
Preserving natural habitats is important to keep in mind when building large solar farms, as they require a lot of land space
Local Ecosystems & Biodiversity
Building solar farms often means clearing vegetation, and can change the temperature & moisture level, so it’s important to be mindful of panel layouts to allow wildlife to move freely & keep natural vegetation
Water Usage
Solar farms use less water than traditional power plants, but even so, recycling water or using dry-cleaning methods should be kept in mind
How Many Solar Farms Are There in New Zealand?
Current operational solar farms in New Zealand include:
- Oakridge Solar Farm (installed by Trilect)
- Ardmore Solar Farm (installed by Trilect)
- Kapuni Solar Power Plant
- Kohirā Solar Farm
- Rangitaiki Solar Farm
- Te Herenga o Te Rā Solar Farm
- Wellington North Solar Farm
- Wairau Valley Solar Farm
- Lauriston Solar Farm
Government targets such as the ‘net zero greenhouse gas emissions by 2050’ target, and the ‘Solar on Farms’ initiative show that the New Zealand government sees a future where renewable energy forms, especially solar energy, take the lead. The Emissions Reduction target is one part of a plan to create a more resilient, sustainable, low-emissions economy.
Trilect Solar: A Trusted Name in Solar Farm Projects
Trilect has history working with large-scale solar farm designs and delivery – Oakridge Solar Farm in Rangiriri, Waikato, was a major step forward for renewable energy in New Zealand, and for Trilect. With 4.8GWh of clean energy being produced from this farm each year, we help to drive New Zealand toward a future powered entirely by renewables.
Our experience, combined with local knowledge and proven delivery, makes us a trusted name in commercial-scale solar across New Zealand. Our strength lies in our end-to-end capability – managing everything from design and grid integration to construction and long-term maintenance.
In 2025, we hosted a group of 29 renewable energy professionals from Southeast Asia at our Ardmore Solar Farm. The trip was organised by the University of Auckland’s Geothermal Institute as part of their month-long Renewable Energy Project Management course. Delegates from Indonesia, Timor Leste, Laos, the Philippines, Vietnam, Cambodia, and Myanmar joined us, and it was a valuable opportunity to exchange insights with fellow professionals.
Energy developers and businesses choose Trilect for our commitment to safety and quality, comprehensive solar solutions for large-scale projects, innovative and efficient electrical services, and the transparent, customer-focused approach we maintain while we reach for our long-term vision of building a more sustainable energy future for Aotearoa.
Trilect Solar is a division of Trilect Services, New Zealand’s master electrician since 1997.
We are members of the Sustainable Energy Association of New Zealand (SEANZ) which offers additional peace of mind to our customers.
Trilect Electrical Services is a large electrical service company which is a member of the Master Electricians & Mastercraft network with 40 employees and a 20+ years history of customer satisfaction.
We do not use sub-contractors. All of the installations will be carried out by our experienced team.
Trilect Solar offers a customised energy plan that works for your home/ business.
Or call us on 0800 850 888