Power Outages - GRNZ Resource Hub
Power companies constantly work to improve New Zealand’s network reliability via better monitoring systems and improved technology— but there’s always the risk of a power outage.
For construction sites, schools, and other businesses that need consistent, reliable long-term power solutions without the risk of power cuts, we help provide generators for scheduled power outages.
If you want to discuss a permanent backup power solution, we're here to help you stay powered and productive.
Power outages are part of life, but they don't have to be a major disruption. Stay prepared, stay informed, and most importantly, keep safe. We're here to help—just reach out to our team.
Why Do Power Outages Happen?
Living in Aotearoa means dealing with our fair share of power cuts. Whether it's scheduled outages for maintenance or unexpected faults during wild weather, being prepared helps you keep safe and get back up and running quickly. Let's walk through everything you need to know about handling power outages in New Zealand.
Our unique geography and climate create several challenges for power security. In the North Island, coastal regions like Northland often experience frequent outages due to stormy weather, while the South Island's West Coast typically experiences 3 to 4 interruptions annually.
Here's what typically causes power faults in New Zealand:
Infrastructure and Technical Issues
Like many countries, we're working with ageing infrastructure that requires regular maintenance. You might notice scheduled outages in your area as power companies work to upgrade these systems. During extreme temperature events, especially in growing urban areas, the grid can become overloaded, leading to energy outages.
Local Challenges
We share our beautiful country with wildlife that sometimes interferes with electricity lines—possums climbing poles and birds nesting in equipment are common causes of power faults. Add construction accidents and vehicle collisions with electricity poles, and you can see why a backup plan is essential.
Natural Events
Our position on the Pacific Ring of Fire means earthquakes and volcanic activity can affect power distribution. Throw in our infamous weather—from coastal storms to alpine conditions—and our power grid faces constant challenges. Climate change is making these events more frequent, and it affects our coastal infrastructure in particular.
What to Prepare for an Outage
Being prepared for power cuts means smart planning and knowing how to respond. Here's what you need to keep safe:
- Torches with working batteries
- Battery-powered radio for updates
- Power banks for your mobile devices
- Basic tool kit
- Three days' worth of non-perishable food
- Three litres of water per person per day
- Manual can opener
- First aid supplies and any essential medications
- Important documents and emergency contacts
We suggest storing everything in one easily accessible place and doing a quick check every six months when daylight saving changes.
Backup Power Solutions
Different situations call for different backup power approaches:
For Homes
If you experience regular power cuts or want peace of mind, portable generators can keep essential appliances running during outages. Just remember to always operate them safely outdoors with proper ventilation.
For Businesses
Whether you're a small shop or a critical operation that can't afford downtime, we understand different businesses have different power needs. Commercial backup generators and energy storage systems can keep your operations running during scheduled and unexpected disruptions. Many companies rent generators for power outages, allowing them to scale their backup power solution based on changing needs or seasonal demands.
For Medical Equipment
If you rely on electric medical equipment, know exactly how long your backup batteries last. Make sure you have a backup plan for charging them and where the nearest powered facilities are.
What to Do When the Power Goes Out
Stay calm and follow these steps to respond effectively:
Immediate Actions
- Check if it's just your place or the whole neighbourhood.
- Unplug sensitive electronics to prevent surge damage when power returns.
- Keep one light on so you'll know when power is restored.
- Use your fridge and freezer strategically—a full freezer keeps food frozen for about 48 hours.
Most power companies now offer real-time updates through their websites (look for outage maps), mobile apps, social media, SMS alerts, or local radio.
Power Companies:
- Vector: 0508 832 867
- Counties: 0800 100 202
- Northpower: 0800 104 040
- Topp Energy: 0800 867 363
Emergency Services:
- 111 for immediate danger
- Your local Civil Defence office
- District Health Board emergency line
Important Contacts to Have Ready
Get in Touch Today
Call us or email us to discuss your specific requirements with our engineering team.