Expected ROI of domestic energy storage project in New Zealand 2025

Can batteries solve New Zealand's energy crisis?

Batteries alone do not solve the challenge New Zealand has of higher energy demand but lower renewable energy availability in winter. The combination of solar PV and batteries might help with this, especially if PV and batteries are deployed in locations with relatively higher winter solar generation.

How long does a home solar system last in NZ?

Most home solar systems in NZ pay off in less than 10 years, which means you still get 20 or more years of free energy and freedom from price hikes and blackouts. Check out this image below showing how the cost of your grid power is distributed across five different categories.

What happened to electricity prices in New Zealand in 2024?

An analysis by Octopus Energy shows that between September 2024 and January 2025, standard prices from three of the country’s largest power providers ‒ Contact, Meridian, and Mercury ‒ had increased by 5% to 15% in Auckland, Wellington, and Christchurch. Prices for short-term discounted plans had increased by as much as 40%.

What's going on with energy prices in New Zealand?

And then there’s more recent data. An analysis by Octopus Energy shows that between September 2024 and January 2025, standard prices from three of the country’s largest power providers ‒ Contact, Meridian, and Mercury ‒ had increased by 5% to 15% in Auckland, Wellington, and Christchurch.

Where is New Zealand's first grid-connected battery energy storage system located?

Meridian Energy has completed construction of New Zealand’s first large-scale grid-connected battery energy storage system (BESS) at Ruakākā, with an official opening ceremony scheduled for later today.

What are the economic benefits of solar PV with energy storage?

It highlights one of the key economic benefits of solar PV with energy storage to New Zealand – as a replacement for peaking generation, and limiting the size of the transmission and distribution networks.