Fonterra contracts Karioi solar output through second ANZA agreement

Fonterra has entered a second long-term virtual power purchase agreement with renewable energy developer ANZA Power, contracting 80% of the expected generation from the proposed Karioi Solar Farm in New Zealand. The agreement covers future electricity output from a development near Tangiwai in the Ruapehu District, not electricity currently being supplied from an operating solar plant.

ANZA Power announced the deal on 14 October 2026. Karioi is planned with 110MWac of alternating-current generating capacity and is expected to produce approximately 215,000MWh annually once operational. The developer is targeting commercial operation in the fourth quarter of 2028 and intends to connect the site to the national transmission grid at Transpower’s Tangiwai substation.

The agreement follows an earlier virtual power purchase agreement between the companies for ANZA’s Somerton Solar Farm in Canterbury, signed in June 2026. Karioi is a separate North Island development. The second contract is intended to support the developer’s progress towards financial close and construction by securing a purchaser for a substantial proportion of its anticipated generation.

ANZA describes Karioi as consented and construction-ready, but those descriptions do not mean that the generating equipment has been installed or commissioned. Financial close and construction remain future milestones. The October announcement does not confirm a construction start date, an agreed contract price or the timing of any first commercial settlement under the new agreement.

A virtual power purchase agreement is a commercial procurement arrangement linked to electricity generation rather than a dedicated physical electricity line between a solar farm and a factory. Power generated by the project would enter the electricity system through its grid connection. The financial terms of a virtual arrangement can support a buyer’s electricity purchasing strategy, but the exact pricing, settlement and risk allocation depend on the contract and have not been disclosed by Fonterra or ANZA.

This distinction also prevents the agreement from being presented as a guarantee that a named dairy processing site will receive electricity directly from Karioi. The announcement does not identify a particular Fonterra factory as the physical destination of the solar farm’s output. It describes increased access to renewable electricity and greater long-term pricing certainty for the co-operative alongside support for new generation in New Zealand.

Anna Palairet, Chief Operating Officer of Fonterra, said the second contract extends the Somerton partnership, supports the addition of renewable generation in the North Island and helps the business manage long-term electricity costs. Those are the co-operative’s stated objectives. Neither party has published the price payable under the agreement or a quantified reduction in Fonterra’s future energy expenditure.

Electricity underpins substantial parts of dairy manufacturing, including refrigeration, pumps, separators, packaging lines and automated process controls. Other production stages, such as evaporation, drying, cleaning and hot-water preparation, may involve different heat sources. Contracting renewable electricity does not by itself establish that thermal equipment has been electrified or that gas use at an individual factory has fallen.

The relationship between solar generation and industrial demand is also important. Dairy facilities can require power outside daylight hours, while solar output varies with the seasons, cloud cover and the daily solar cycle. A long-term purchase arrangement linked to a solar project therefore does not mean that its contracted output will match a customer’s consumption at every hour. Fonterra will still need arrangements appropriate to the operating profile of its facilities.

Karioi’s planned 110MWac capacity expresses the rated alternating-current power the installation is designed to deliver under specified conditions. ANZA’s 215,000MWh annual generation estimate is a separate measure of energy expected over a year. Actual generation will depend on the completed equipment, operating conditions, solar resource and downtime once the plant is built.

The contracted 80% share refers to the project’s expected generation output. It is not a statement that Fonterra will own 80% of the project or that it is providing 80% of construction finance. ANZA remains the identified developer, and the announcement does not disclose an equity investment by Fonterra in the solar farm.

ANZA announced in September that it had agreed to acquire Karioi and the separate Ongaonga Solar Farm from Helios Energy. The two consented projects together were described as 205MWac of planned generation, with Karioi accounting for 110MWac. The acquisition announcement and the October power purchase agreement concern different stages of the development’s commercial arrangements and should not be conflated.

The planned Karioi installation will occupy land near Tangiwai while allowing sheep grazing to continue on the site. This proposed coexistence of agricultural use and solar generation is part of the developer’s project description. It is not evidence that grazing alongside installed panels is already under way at the proposed facility.

ANZA has acknowledged the roles of Ngā Waihua o Paerangi Trust, representing Ngāti Rangi, and Te Korowai o Wainuiārua Trust in the project’s development and consenting. Both organisations worked with Helios Energy during the earlier stages of the development. ANZA has said it intends to maintain those relationships as Karioi progresses, without presenting the power purchase agreement as a substitute for construction or other project obligations.

The developer is backed by infrastructure investor I Squared Capital, which has announced a US$300 million equity commitment to the wider ANZA platform. That figure relates to the development business and must not be treated as the capital budget, financing requirement or valuation of the Karioi Solar Farm. No standalone project cost has been published in the October announcement.

Carlo Frigerio, Chief Executive Officer of ANZA Power, said the second Fonterra offtake agreement brings the consented project closer to construction. Its role is to strengthen the proposed development’s contracted commercial position; it does not provide confirmation that financing has closed, the construction contract has been awarded or generation has begun.

Fonterra’s contract creates an additional route for the co-operative to participate commercially in New Zealand’s planned renewable generation while the dairy business continues to manage the power needs of its manufacturing operations. The next verifiable project milestones will be financial close, commencement of construction, grid connection and commissioning. Until those occur, the 215,000MWh figure and fourth-quarter 2028 start remain projections rather than operating results.