knowledge article

Homeowner blindsided by April 600% Lines Charge Increase – Here’s How Solar can offset it

12/05/2025

As reported by RNZ,when Marlborough Sounds bach-owner Mark opened his latest bill, he discovered his daily fixed charge had leapt from 60c to $4.24 – a 600% jump that could top $3000 a year for just 60 days’ use. “Property values will likely drop though as the appeal of owning a property where supply is so expensive will wane," he told RNZ.

With low-user tariffs being phased out and lines companies lifting fees nationwide, many Kiwis are bracing for the same hit. The good news? Going solar with a well-designed solar system – and a few smart habits – acts like a circuit-breaker against those unavoidable charges.

Solar smart habits that tackle the power bill increases head-on

 

Habit

Why It Works

Quick Tip


Add a home battery (top savings)


Stores extra solar power made during the day, so you can use it at night and still have power during a blackout.


Game-changing Tesla Powerwall 3 (13.5 kWh all-in-one inverter + 10 kW output) or UK GivEnergy batteries. Both brands provide industry leading solar battery solutions.


Run big appliances when the sun’s out


Uses free rooftop power instead of peak-rate grid power.


Set the delay-start on the dishwasher, washing machine or pool pump after brekkie.


Hot-water timer/diverter




Heats your cylinder with excess solar rather than pricey night power.


Harrisons Solar supply and fit timers & power diverters to send spare power straight to hot water.


Track usage with smart apps





Live data shows what’s chewing power and lets you tweak settings.


Fronius Solar.web (included in non-battery systems) or the Tesla App (with Powerwall) give you comprehensive 24/7 control and alerts.


Regular cleaning





Dust, salt spray and debris block sunlight and cut output.


After windy or rainy weather, give your panels a check and keep them clear of dirt and debris to get the most sunlight.


Trim surrounding trees


Shade at any time of day reduces generation.


Trim back nearby tree branches before winter. If they’re too big, get a pro to help.


Optimal panel placement


Correct tilt and direction capture the most winter sun.


Our installers calculate the best angle for every roof in NZ – no guesswork, just maximum sun power.

Put together, these tweaks can neutralise most – if not all – of that potential 600% lines-charge sting and future-proof your power bill.

Why Harrisons solar is the safe bet

  • Voted NZ’s #1 Most Trusted Solar Installers – three years running

  • Largest solar team in the country – local know-how everywhere

  • Kiwi-owned for 60+ years with a 4.9-star Google rating

  • Best Price Promise – premium panels, inverters and batteries at sharp Kiwi prices

  • Exclusive 18c/kWh buy-back with Mercury – among NZ’s top fixed rates, so your surplus earns more

  • 0% financing options available with all major NZ banks. T&Cs apply

Now’s the time to start slashing your power bill

Our FREE on-site consultation shows you:

  • Exactly how much savings you’ll generate in year one and over the next five

  • How quickly your system pays for itself

  • The perfect mix of panels, inverter and battery for your home

Book your FREE in-home consultation now

Beat the potential 600% hike. Switch to smart solar with Harrisons today and slash your power bills before the next rise lands.

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