13.2 kW Solar System in NSW: Output, Benefit & Ideal Home Profiles

A 13.2 kW rooftop system has become the go-to size for households that want true energy independence in 2025. It comfortably supports all-electric living—induction cooking, heat-pump hot-water, air-conditioning and an EV—while still leaving head-room for future growth. If you’re building, renovating or upgrading, here’s why 13.2 kW is worth a close look.

Daily solar production is influenced by a number of factors including panel orientation/tilt, shading from trees and other factors, along any export limits imposed by your Distributed Network Service Provider (eg; Ausgrid, Endeavour Energy, or Essential Energy)

PERFECT FIT FOR

• Growing families – Three or more residents, multiple air-conditioning zones, pool pumps, appliances running in daylight hours.
• Work-from-home professionals – Computers, monitors and office equipment powered by daytime solar instead of grid electricity.
• EV and future-EV owners – Adds 10-15 kWh of daily charging capacity via solar.
• Electrification champions – Big enough to handle new heat-pump hot-water services, induction cooking and electric heating.

WHY 13.2 kW BEATS SMALLER ARRAYS

• Higher self-consumption head-room – Run EVs, pools and large appliances with solar rather than grid power.
• Future-proofing – Spare capacity for family growth or a second electric vehicle.
• Stronger Return on Investment (ROI) – A bigger share of your usage covered by solar shields you from annual retail tariff hikes.

TYPICAL HARDWARE CHOICES IN 2025

High-Value Package

• 30 × JA Solar 440 W panels
• Sungrow SG10RT hybrid inverter (battery ready)

Shade-Resilient Package

• 30 × Trina Vertex 440 W panels with SolarEdge power optimisers
• SolarEdge Home Hub 10 kW inverter with panel-level monitoring, and battery ready for the SolarEdge Energy Bank Battery

Premium EV Home Package

• 29 × AIKO N-Type 455 W panels
• Fronius GEN24 10 kW inverter
• Compatible with BYD or Fronius Reserva batteries

Most owners add a 10–15 kWh battery within two years to store evening loads and provide blackout back-up.

MAKING THE MOST OF 13.2 kW

• Shift large appliances to daylight hours using smart timers.
• Install hot-water diverters to soak up surplus solar.
• Track consumption with the inverter app and fine-tune usage patterns.
• Consider upgrading to three-phase supply if you household demand is high, export limiting is a concern or you’d like to implement faster EV charging.

IS 13.2 kW RIGHT FOR YOU?

• Choose this size if two or more of the following apply:
• Home has (or soon will have) an electric vehicle.
• Household electricity use is above 25 kWh per day.
• Plans are in place to electrify hot-water, cooking or heating.
• Roof space exceeds 60 m² with mostly unshaded north or west aspects.
• Goal is to reach 80 % or more solar self-consumption.

ADVANTAGES OF A 13.2kW SYSTEM WITH A HYBRID INVERTER:

When you add a battery to your installation, potentially at a later date, you can get the benefit of the Federal Solar Rebate: Small Scale Technology Certificates (STC’s). Whilst for ‘solar only’ systems the rebate caps out at 33% greater than your inverter capacity – eg; 13.2kw of panels on a 10kw inverter, this oversizing rule is expanded to 200% when adding battery storage – so a whooping 200%!

READY TO UPSIZE?

Partners in Energy designs and installs 13 kW-class systems across Sydney, Orange and the Central West – including switchboard upgrades, battery integration and a 10-year workmanship guarantee.

Phone: 1300 743 669
Email: contact@partnersinenergy.com.au

Invest once, power everything—today and for decades to come.