Can I add a battery later, or do I have to do it now?

You can add one later. Plenty of customers start with solar and add storage when it suits their budget. There are two ways to do it: add a battery with its own inverter alongside your existing solar, which is called an AC-coupled retrofit, or replace the inverter with a hybrid one that runs both the panels and the battery. Which suits you depends on your inverter. Tell us a battery is on your horizon and we will design this system to be battery-ready from the start, reserving the wall space and allowing for the cabling, so adding storage later is straightforward rather than a rebuild.

Is 6.6kW big enough for my place, or should I go bigger?

6.6kW suits a 3 to 4 bedroom home with 2 to 4 people and a quarterly bill around $400 to $700. If your bill is over $800, or you have a pool and ducted air-conditioning, or an EV now or planned, 10kW will serve you better. We do not employ commissioned salespeople, so nobody here earns more by selling you a bigger system than you need. Fred sizes it to your actual usage and will say so if the smaller one is the right call.

How much is it going to cost me all up — no hidden extras?

The price above covers a standard single-storey, single-phase install in South East Queensland, with the federal STC rebate already applied at point of sale, so there is no paperwork for you and nothing to claim back later. Your written quote itemises everything, and shows the rebate as a separate line so you can see exactly what it knocks off, rather than a vague “after rebate” headline hiding the workings. If your roof or switchboard needs anything extra, we find it at the free site assessment and put it in the quote before you commit.

6.6kW Solar System
Brisbane & South East QLD

Designed and installed by a licensed electrician. Fixed price, rebate applied at point of sale, no paperwork for you.

Trusted brands & accreditations

What you get for your money

One package, priced and sized for a typical South East Queensland home.

X 15

panels

440W Aiko

5kW

inverter

Sungrow, single-phase



6,600W total system size

From $3,900*

15 × 440W Aiko panels · 1 × Sungrow 5kW single-phase inverter

*Indicative price for a standard single-storey, single-phase install in SEQ, after the federal STC rebate is applied at point of sale. Final price confirmed after a free site assessment.

Upgrade options available (GoodWe, FoxESS, Sigenergy)

See the brands we install



Real output in South East Queensland

How much power will it make?

Figures for a north-facing, unshaded system in Brisbane. Your roof will vary, so we confirm the numbers at the free site assessment.

Get my fixed price

26–28

kilowatt-hours on an average day, taken across the whole year

0kWh

generated every year, roughly the yearly use of a typical family home

30s / 20s

kWh a day in summer, low 20s in winter. Highest exactly when your air-conditioning is working hardest



Your saving

How much will you save?

Every figure below comes from the same system on the same roof. Flip the switch to see it by year or by quarter, so you can hold it against your own bill.

Households home during the day, or with a battery, save more.

Explore Battery Options

Per year

Per quarter

Power your system makes

9,800 kWh

Your description goes here.

Power you use at home, at 32c

$1,568 saved

Your description goes here.

Power you send to the grid, at 5c

$245 earned

Your description goes here.

Grid power you stop buying

4,900 kWh

Your description goes here.

Total saving

$1,813

Your description goes here.

Power your system makes

2,450 kWh

Your description goes here.

Power you use at home, at 32c

$392 saved

Your description goes here.

Power you send to the grid, at 5c

$61 earned

Your description goes here.

Grid power you stop buying

1,225 kWh

Your description goes here.

Total saving

$453

Your description goes here.

Based on a north-facing, unshaded 6.6kW system in South East Queensland making about 9,800 kWh a year, with about half of it used in the home. Quarterly figures are a yearly average, so summer runs higher and winter lower. Your own numbers depend on your roof, your usage and your retailer, and we confirm them at the free site assessment.

What is included in the price?

Site assessment and system design by Fred, a licensed electrical contractor and CEC accredited designer

Energex grid connection application handled by us

Installation by Energy Gate’s own licensed team, no subcontractors

Electrical safety certificate issued on completion

Monitoring app set up and demonstrated before we leave

Manufacturer warranty registration done for you

5 year workmanship warranty

STC rebate applied at point of sale, no paperwork for you

Hear from people we’ve powered

      
   ENERGY GATE PTY LTD
   149 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   Michael Byrne 
 
 
 
  Excellent product and service. No extras. Very neat and tidy install. Excellent pricing
Extremely happy
  
 
      Posted on Google  
   
   Vikram Sharma 
 
 
 
  Fred installed a Sigenergy battery system with a DC EV charger at our home in Brisbane, and I'd happily recommend him.

He came out for a site visit, and I had a detailed proposal the same evening. What stood out was his honesty. Instead of upselling, he told me I didn't need to replace my existing solar panels yet, and that I could add them later to the sigenergy inverter if I wanted to.

When I asked to move the batteries into the garage so we could charge the car there, and to add a larger gateway, inverter and DC charger, Fred called me to talk through the options before sending a revised quote. He was quick to respond and easy to reach the whole way through, and he never pushed me. The installation was seamless and the Battery has been working flawlessly since the day it was installed.

Fred spent 2 hours in setting up the app for my and explained all the details and how to use it. Three weeks since the installation and use of this battery system and no issues at all.
  
 
      Posted on Google  
   
   RuKi B 
 
 
 
  ⭐⭐⭐⭐⭐

Energy Gate is the best in the business!

Fred was fantastic to deal with—professional, knowledgeable, and experienced in solar and battery installations across Brisbane.

I’m extremely happy with my solar and battery system and the overall service provided. Fred made the whole process a great experience, and I couldn’t be happier with the result.

Highly recommend Energy Gate to anyone looking for a reliable, professional solar installer in Brisbane!
  
 
      Posted on Google  
   
   Taikoko jr Taikoko vaikai 
 
 
 
  Thank you to Fred & team at Energy gate for setup of my massive Goodwe system battery inverter & fast charger , upgrade backup system to maintain power box  for the whole house ..

The eye for detail in workmanship is the best in business ..

Thank you Again
  
 
      Posted on Google  
   
   Moya Baldry 
 
 
 
  Great job by Fred at EnergyGate. Fred made sure I knew how to use the system and answered my questions about charging the car over the weekend. My first bill for the month is down to $12! He was happy to accommodate my small solar system and get it to work for my energy needs and new EV.
  
 
      Posted on Google  
   
   Greg S 
 
 
 
  I'd like to recommend EnergyGate and Fred. Fred was the only solar installer interested in doing a site visit.
I have  two rooftops that were suitable but I wasn't sure how they all could be connected.
Fred came up with a plan of 9.5kW of PV and a GoodWe 15kW ESA all in one with initially 32kW of storage in my garage which is next to my switchboard. Fred Installed
a GoodWe 8kW grid tie inverter with 9kW of PV on my carport. This inverter has been AC coupled with the all in one. This system was installed in September 2026 and is located in South East Queensland.
The energy input into my batteries and grid has been pretty amazing and I soon relised that I could  easily charge up to 50kW of Batteries. I talked to Fred and he arranged for these to be  installed a couple of weeks later.
The SEMS plus app is easy to use.
Fred was easy to communicate with and the system install went smoothly. We are very happy with the final result.
  
 
      Posted on Google  
   
   glenn saldz 
 
 
 
  Expert advice and flawless execution by Energy GateChoosing the right setup among so many options can be overwhelming, but Fred Amiri made it simple. He customized a brilliant solution for us, integrating new solar and an EV charger with a 15kW inverter, 40kW battery, and gateway. Fred’s knowledge is top-tier, and the entire experience with Energy Gate was fantastic. Highly recommended for any serious residential energy project!
  
 
      Posted on Google  
   
   Jan Alvaro 
 
 
 
  Great workmanship. Fred and his team takes pride in their work. Their communication is top notch and answered all queries I had. They even patched the old holes from the previous inverter. Its the little details that wont go unnoticed
  
 
      Posted on Google  
   
   Ramin Khajavi 
 
 
 
  I looked into the market to find a good battery system and more importantly a great installer to give me a peace of mind for this investment. After some time, i came across Energy gate and upon my conversations with them to find the most suitable system for my needs, their expertise and experience became clear to me and that was paramount to me and then signed the contract with them. The system was installed beautifully and neatly. Running perfectly since then. Fred is great to deal with, don’t go past EnergyGate.
  
 
      Posted on Google  
   
   Yaqoob Zia 
 
 
 
  Very happy to have Goodwe solar battery from Energy gate. Fred the sales consultant who also installed the battery is very decent man. very helpful and accommodative. I will give five stars to Energy Gate and Fred.
  
 
  
  
 
    Verified by Trustindex  Trustindex verified that these reviews were published on ENERGY GATE PTY LTD's Google Business Profile. Learn more