project brief

Waikato solar installation integrated into an existing solar system, while adding a complete Sigenergy energy management system.

category

Solar, Batter & EV Charging

client

Residential Waikato Homeowner

location

Waikato, New Zealand

start date

October, 2026

Solar, Battery & EV Charging

This Waikato home is a great example of what a modern Waikato solar installation can deliver when solar generation, battery storage, backup power and EV charging are designed as one integrated system.

The homeowners wanted to reduce their reliance on grid electricity while retaining their existing solar system. They also wanted battery storage, whole-house backup and high-powered EV charging.

Incon installed a new 18.48 kWp solar system, integrated the existing 7 kW solar system, and added a complete Sigenergy energy management solution.

The System

  • 42 x 440 W solar panels – 18.48 kWp new solar
  • 7 kW existing solar retained

  • 25.5 kWp total solar capacity

  • 20 kW three-phase Sigenergy Energy Controller

  • 18.08 kWh battery storage

  • Three-phase Sigenergy Sigen Gateway

  • 25 kW DC EV charger

  • Whole-house backup

The existing solar was integrated into the new system through the Sigen Gateway Smart-Port, allowing the homeowners to retain their existing investment while significantly increasing their overall solar generation and energy storage capacity.

Real-World Solar Performance

The Sigenergy monitoring system shows the installation has generated 26.97 MWh of solar energy to date (11months).

  • 26.97 MWh – Solar generated

  • 19.1 MWh – Home energy consumption

  • 14.04 MWh – Energy exported to the grid

  • 6.24 MWh – Energy imported from the grid

  • 6.07 MWh – Battery energy charged

  • 5.87 MWh – Battery energy discharged

  • 12.81 tonnes – Estimated CO₂ emissions saved

These figures demonstrate the substantial amount of renewable energy being generated on site, with battery storage helping the homeowners make better use of their solar energy.

Whole-Home Backup

Energy savings weren’t the only priority for this Waikato solar project. Since installation in October 2026, the homeowners report that they haven’t noticed a power outage inside the house, despite outages in the surrounding area associated with ongoing lines-company upgrades. The whole-house backup system provides an additional level of energy security when the grid is unavailable.

Solar Waikato – Designed Around How You Use Energy

This installation demonstrates how solar Waikato homeowners can combine solar panels, battery storage, backup power and EV charging into one integrated energy system.
With 25.5 kWp of total solar, 18.08 kWh of battery storage, whole-home backup and a 25 kW DC EV charger, this Waikato installation provides a high level of energy generation, storage and independence.

If you’re considering solar in Waikato or Hamilton, talk to Incon Automation about designing a solar and battery system around your home’s energy requirements.

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