About the specification
The uptake of efficient solar technology can support energy security and affordability in New Zealand. To support its uptake, EECA has created a technical specification that covers panels, inverters, and batteries.
The specification provides a minimum set of voluntary requirements covering efficiency and smartness, as well as methods to show how products meet the specification. It was developed following a period of consultation in September 2025 and is intended to be used by suppliers of solar panels, inverters and batteries.
Efficient solar technology supports uptake
Solar systems are made up of two main components - photovoltaic panels and an inverter, which can also be paired with batteries. Solar is a form of intermittent renewable energy, meaning it is not continuously available but fluctuates depending on the time of day and weather conditions.
Current solar systems last up to 20 years, so ensuring that systems installed on New Zealand homes are efficient and smart will help maximise the value from the energy they generate, over the course of its life.
A smart solar system can communicate externally ensuring that it works together with the other appliances in your home and the electricity grid (two-way communication).
Technical specification for solar products
Voluntary requirements for efficiency and demand flexibility are set for:
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- photovoltaic panels
- inverters
- battery systems.
While the focus is on residential systems, the requirements are also applicable to small commercial systems.
The specification will evolve over time as technology and standards develop. Any revision to the specification will have a suitable transition period.
EECA welcomes feedback on the specification, which can be sent to star@eeca.govt.nz.