Celtic Solar

We Believe in Intelligent Inverters that Maximise Your Solar Investment

Advanced Solar Inverter Solutions for Residential and Commercial Properties

Our Solar Inverters

Your inverter is the “brain” of your solar system, responsible for converting the DC energy captured by your panels into usable power for your home. At Celtic Solar, we select only high-performance inverters known for their reliability, superior heat dissipation, and advanced monitoring capabilities. Given the intense Queensland sun, we prioritise hardware that maintains peak efficiency even in high temperatures, ensuring your system performs consistently year-round.

Home » Our Brands » Solar Inverters

Sungrow

Sungrow is Australia’s most trusted inverter brand, offering a high-performance hybrid solution that balances technical excellence with exceptional value. Their latest generation of inverters is incredibly lightweight and silent, making them ideal for modern residential installations.

The system integrates seamlessly with the iSolarCloud app, providing clear data on your solar generation and battery status. With a high efficiency rating and robust protection against the elements, Sungrow is a proven performer in the harsh Australian climate, supported by a strong local technical presence.

Features a comprehensive 10-year local Australian warranty, providing peace of mind through a brand with a massive, long-term footprint in the domestic market.

Sigenergy

Sigenergy’s “SigenStor” is the world’s first AI-driven 5-in-1 “Energy Hub”. It revolutionises home energy by integrating the inverter, battery storage, and EV charging into a single, sleek tower. This modular, stackable design allows you to increase your energy capacity as your family’s needs grow.

Safety and innovation are at the core of Sigenergy. It features industry-first built-in fire suppression and AI-optimised energy management that learns your habits to maximise savings. It is also future-proofed with bi-directional charging capabilities, allowing your electric vehicle to power your home during a blackout.

Features a comprehensive 10-year system warranty with the reliability of a fully integrated ecosystem where every component is designed to work perfectly together.

SolarEdge

SolarEdge is the ultimate solution for complex or shaded roofs. Unlike traditional string inverters, this system utilises DC Power Optimisers on every panel. This ensures that if one panel is affected by shade or debris, the rest of the array continues to perform at its maximum potential.

Beyond performance, SolarEdge offers unparalleled safety and visibility. The system includes “SafeDC” technology to automatically de-energise DC voltage during maintenance or emergencies. You also gain panel-level monitoring, allowing you to view the real-time health and output of every individual module on your roof.

Backed by a market-leading warranty structure, featuring 12 to 25 years on the inverter and a full 25-year warranty on the power optimisers.

Fronius

Fronius is legendary for its “SnapInverter” design, which allows for easier servicing and upgrades, making it the most sustainable choice for long-term solar ownership.

These hybrid-ready units feature advanced active cooling, which significantly extends the lifespan of internal electronics by managing the intense Queensland heat.

The integrated smart monitoring allows you to track your energy production and household consumption in real-time via the intuitive Solar.web platform.

Comes with a standard 10-year warranty, which is extendable to 20 years, backed by a company with over 75 years of electronic engineering excellence.

Our Services

Solar Systems

Customised residential and commercial solar systems built around your unique energy profile.

We manage the entire engineering and grid- connection process so you can simply sit back and save.

Ongoing repairs, health checks, and maintenance are available for all systems, regardless of who installed them.

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Battery Systems

Premium battery storage options tailored to suit new or existing solar arrays.

These future-ready systems capture your surplus daytime generation to power your property cleanly through the night.

Rest easy with reliable backup power configurations designed to keep your home running smoothly during unexpected grid outages.

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EV Charging

High-speed AC and DC charging solutions engineered for modern homes, workplaces, and commercial fleet depots.

Take complete command over your charging schedules, power sources, and delivery rates to match your lifestyle.

Seamlessly transition between rapid grid charging and 100% self- generated rooftop solar energy to reduce transport costs.

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Home Electrification

Your comprehensive local solution for general electrical trade services, safety switch upgrades, and property rewiring.

Maximise your household savings by integrating smart and energy efficient appliances.

Transform your hot water system into a solar-powered battery using intelligent diversion hardware that runs on free daytime energy.

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Frequently Asked Questions

What solar panels do you recommend?Celtic Solar2026-05-19T04:10:33+00:00

What solar panels do you recommend?

We recommend N-Type (TOPCon) panels as the modern industry standard for the Sunshine Coast. These panels offer superior heat tolerance and efficiency, ensuring they generate more power during hot Queensland summers and last significantly longer than older P-type technology. We recommend Winaico premium panels as they have high mechanical strength and excellent salt spray resistance, which is vital given our warm coastal environment.

What is a solar inverter?Celtic Solar2026-05-19T04:10:40+00:00

What is a solar inverter?

The inverter is the “brain” of your system, converting the DC electricity from your panels into the AC power used by your home. Inverter capacity is measured in “kW”. The higher the number the more power the inverter can provide to your appliances, reducing your reliance on the grid. We only install smart, grid-compliant inverters that allow for real-time monitoring and with proven performance.

Should I choose a string inverter or microinverters?Celtic Solar2026-05-19T04:10:49+00:00

Should I choose a string inverter or microinverters?

String inverters are cost-effective and reliable for simple, unshaded roofs. However, if your roof suffers from shading issues or has multiple orientations, microinverters or optimisers are essential to ensure every panel performs at its maximum potential independently.

How much roof space do I need for a 10kW system?Celtic Solar2026-05-19T04:10:54+00:00

How much roof space do I need for a 10kW system?

A modern 10kW system typically consists of 20 to 22 high-efficiency panels (465 – 500W per panel). This requires approximately 45 to 55 square metres of clear roof space, depending on the specific dimensions and wattage of the panels selected for your property. We use sophisticated design software to determine the most appropriate layout for your home.