Solar in 2025: What New Zealand Homeowners Need to Know Before Installing

Solar Hub install on Auckland home

If you've been thinking about going solar, 2025 is shaping into an especially promising year for Kiwi homes. With smart policy moves, falling solar panel costs in NZ, and the latest technology upgrades, there’s never been a better time to harness the sun’s energy.

The 2025 Solar Landscape in NZ

• Government reforms are making it easier to install solar panels in New Zealand. Residential rooftop systems no longer require building consent, and councils must process new-home solar applications within 10 working days.

• The electricity network’s permitted voltage range has expanded to better handle exports from households and EV chargers. This is expected to boost nationwide solar generation by around 507 GWh.

• While a nationwide home solar subsidy was considered, it has not been introduced. Solar growth is instead being driven by cheaper installation costs and improved regulations.

• As of May 2025, New Zealand had 633 MW of grid-connected solar capacity, with about 32% of that installed in the past year. Solar now produces roughly 1.4% of the country’s electricity.

• The average residential solar system in NZ costs about $16,500—down from $40,000 in 2009.

  
  

Common Mistakes to Avoid Before Installing Solar

• Under-sizing your system – Plan for future needs like EV charging or heat pumps.

• Skipping a roof inspection – Ensure your roof is in good condition to avoid costly panel removal later.

• Not comparing buy-back rates – New Zealand solar export rates now range from 8–40 c/kWh depending on retailer and time of day.

How Fast Can Solar Pay Off in NZ?

Thanks to falling prices, more efficient panels, and competitive buy-back rates, most NZ households now recover their solar investment in under 5 years.

How to Start Your Solar Journey in 2025

If you’re ready to cut power bills and future-proof your home, start with a free personalised solar assessment. Solar Hub NZ can design a system based on your home’s energy use, roof layout, and future plans — whether you’re considering an EV, battery storage, or simply want to save more each month.

Ready to explore your options? Contact Us

Frequently Asked Questions

How much do solar panels cost in NZ in 2025? The average residential solar system costs about $16,500, down from $40,000 in 2009. Your final cost depends on your roof size, system capacity, and whether you add a battery.

Is solar power worth it in NZ right now? Yes. With lower costs, high efficiency panels, and export rates up to 30c/kWh, most of our residential customers see payback in under 5 years.

Do I need council consent to install solar panels in 2025? No. Residential rooftop installations no longer require building consent. New-home installations must be processed by councils within 10 working days.

What are the best solar panels in 2025? Panels with bifacial designs are among the most efficient and durable options currently available in NZ.

Can I add a battery later if I start with just solar panels? Yes. Many NZ homeowners start with panels and add solar batteries later to increase self-consumption and store excess energy for evening use.