Taupō Home Slashes Power Bills with a 27-Panel Solar & Battery System

Location: Acacia Bay, Taupō

Industry: Residential

Installer: Solar Hub NZ Limited

System Installed: 12.29 kW Solar + 15.6 kWh Battery Storage

This modern home in Acacia Bay, Taupō, made the switch to solar to reduce rising electricity bills and gain long-term energy independence. With annual power usage of around 12,551 kWh, the homeowner wanted a system that could fully offset their electricity consumption while taking advantage of Taupō’s excellent solar conditions.

Solar Hub NZ designed a high-performance solar and battery system capable of generating more energy than the household uses over a full year.

The Challenge: Designing Solar for a Multi-Roof Home

The property features a complex roof layout with multiple gables and a mix of east- and west-facing roof sections. This meant the solar design needed to:

• Capture sunlight from early morning through late afternoon

• Stay within the local 5 kW grid export limit

• Integrate with a three-phase power supply

• Maximise self-consumption using battery storage

• Remain future-ready for EV charging and electrification

A one-size-fits-all system wouldn’t deliver the best results — a tailored solution was essential.

The Solar Hub Solution

Solar Hub NZ engineered a customised solar and battery system that made full use of the available roof space while meeting all network and performance requirements.

System Overview

Solar System Size: 12.29 kW

Solar Panels:

• 27 × JA Solar 455 W panels

• Total module capacity of 12.3 kW

• Panels distributed across east- and west-facing roof planes to smooth generation throughout the day

Hybrid Inverter:

• 12 kW Deye three-phase hybrid inverter

• Manages solar production, battery charging, and grid export intelligently

Battery Storage:

• 15.6 kWh Micromall lithium-ion battery

• Stores excess solar during the day for use in the evening and overnight

Solar Results & Energy Savings

The completed system transforms the home into a small residential power station.

Estimated Annual Electricity Bill Savings: Over $4,000

Projected Electricity Bill Savings Over 25 Years: $145,000

Projected Lifetime Net Savings: $115,600

Projected Energy Performance:

• 107% grid consumption offset

• 35% self-consumed on site

• 58% exported to the grid (export-limited to meet network rules)

The system delivers a simple payback period of approximately 6 years and 7 months, with strong long-term financial returns.

Environmental Impact of Going Solar

By switching to solar power, this Taupō home is expected to achieve:

• Around 2 tonnes of CO₂ emissions avoided every year

• The equivalent of 144,500 km of car travel avoided over the system’s lifetime

• Comparable to planting approximately 295 trees

Why Choose Solar Hub NZ?

This Taupō solar installation showcases Solar Hub NZ’s ability to deliver smart, future-proof solar solutions for complex residential homes.

Key benefits for the homeowner included:

• In-house solar design and financial modelling

• Premium Tier-1 solar panels, inverter, and battery

• Long-term product warranties across all major components

• 10-year workmanship guarantee

Get a free quote today to find out exactly how much you could be saving