HOME BATTERIES
Solar battery storage for Mackay homes
When the street goes dark in a Mackay storm, a battery is the difference between a normal evening and a fridge you are emptying by torchlight. Sized from your own meter data, with a written plan for what stays on.
Fully insured, SAA accredited installer, rated on Google.
- 5.0Google rating from 12 reviews
- $20MPublic liability cover
- SAAAccredited installer S6250996
- RIIWHS204EWorking at heights certified
Next Phase Solar installs home battery storage across Mackay and the Northern Beaches. The first question most people ask is not about savings, it is what happens when the power goes out, so that is where the sizing starts: which circuits you want alive, for how long, and what your own meter data says you actually use after dark.
Brands and systems we work with
How we work
From your power bill to switch-on
Tell us what you need
Panels, a battery, an EV charger, or a mix. Send the form or ring us.
Send a recent power bill
A photo is fine. It shows what you use each day and whether you are on single or three phase power, which decides the inverter.
Designed from your bill
We size the system from your bill and send a written quote within 24 hours of getting it. You read it before anyone visits.
Roof and site check
If you want to go ahead, our technician checks the roof and takes measurements. Then we finalise the quote.
Ergon and STC paperwork
We lodge the Ergon connection application for you, and do the STC paperwork at no charge.
Switch-on and handover
We install, test and switch on the system, then hand everything over. 3 years on our workmanship from the day we finish.
Buy a solar battery. Get $1,500+ in free extras.
- Free Bird proofing Worth about $1,200
- Free Panel clean Worth about $360
- Free Thermal check $50 value
Offer ends 30 November
See the full offerOffer: free bird proofing, panel clean and thermal check for the solar panels on the same roof as your new battery, with a battery quote accepted by 30 November 2026. One visit. Values are our standard prices for a 24-panel system; smaller systems are worth less. Battery images: manufacturers. Full terms at npsolar.com.au/terms.
SAA accredited installer · Fully insured, $20M public liability · ABN 56 692 269 417
Scope of work
What's included in Home Batteries
- Battery sized against 12 months of bill data
- Tesla Powerwall, Sungrow, GoodWe or Deye options
- Retrofit to existing solar or new install
- Backup circuit for fridge and lighting on outage
- We guide you through the federal battery rebate
- 10-year battery warranty support
Service areas
Based in Mackay, working across the Whitsundays and the Bowen Basin.
What our customers say
Reviews from real customers on Google.
The team came to do a Solar panel health check. They were punctual, courteous and explained what was going to happen. The report arrived day after appointment as promised with photos showing possible causes of less efficient panels. I would confidently recommend Next Phase Solar for their panel check and clean.
Had Brad out to give the panels a clean. Friendly bloke, in and out quick and they look brand new again. Cheers guys, will be booking again.
Good service!!!!!!!!!!!!
We wanted a decent sized battery and they were the only ones who didn't try to talk us into something smaller. 32kWh GoodWe, installed in a day, boys were on time and left the place tidy. Brad answered every question I had, and a few after as well. Couldn't ask for better!
Very pleased with the whole experience, right from quote to saving money with no more electricity bill. The quote was very competitive and the job was done in timely manner. Would recommend Brad and the team to anyone thinking of solar
Really happy with my new solar panels at home. The whole thing was smooth and stress free, and they took the time to explain everything and answer all my questions, which I really appreciated. Great service and lovely to deal with. Thank you.
Fast and easy from start to finish. I just needed a battery added and they sorted it out really quickly, much faster than I expected after hearing how long other companies take. Brad was great, clear and helpful the whole way through. Highly recommend them if you are in Mackay.
After getting a few quotes, We decided to go with Next Phase Solar and we're really glad we did. They were upfront, easy to deal with, and there were no surprises along the way. Install day went smoothly and everything works perfectly!
I would highly recommend Next Phase Solar. 🥰 From first contact, to install and then aftercare they've been friendly, helpful and professional. The system is performing well and I'm happy with the outcome! 😁
Really good value. I wanted to add a battery to my setup and shopped around a fair bit, and Brad came back with the best price out of everyone I asked. No pushy sales, just a straight good deal and the job done properly. Happy customer, would recommend them to anyone in Mackay looking at solar or batteries🙏🏻
Frequently asked questions
About home batteries.
Tesla Powerwall 3 (13.5 kWh) is the most polished app and integrates beautifully if you want backup; Sungrow SBR (3.2 to 25.6 kWh modular) is the value play with reliable Aussie support; GoodWe Lynx Home F (6.5 to 16.4 kWh) sits between the two; Deye SE (5 to 30 kWh) is the cheapest per kWh and works well retrofit. We recommend based on your inverter, your backup needs and the warranty terms, not on the salesman's commission.
Average Mackay home uses 4 to 7 kWh between sundown and bedtime. A 10 kWh battery covers most evenings plus a margin for the morning shower. 13.5 kWh (Powerwall 3) covers an evening plus a whole-night fridge / lighting backup. Going bigger than 15 kWh rarely pays back, sizing should match your evening load not your total daily use.
The federal Cheaper Home Batteries Program gives a discount of around 30% on the upfront cost of an eligible battery, according to the Australian Government (DCCEEW). The amount depends on your battery's usable capacity and the STC factor on the day it is installed. That factor is 6.8 until 31 December 2026 and 5.7 from 1 January 2027, and it steps down every six months until 2030. Above 14 kWh, each extra kWh earns less. We take the discount off your quote and guide you through it.
It can, if sized correctly. Most homeowners pick a 'partial backup' wiring: fridge, lights, internet and one general-purpose outlet circuit on backup, air-con and oven left on the grid. This makes the battery last 12 to 48 hours during an outage. A whole-house backup needs a bigger inverter and a transfer switch, doable but adds cost.
Yes, almost always. AC-coupled batteries (Tesla Powerwall 3, Sungrow SBR, GoodWe Lynx) plug in alongside any existing solar inverter. DC-coupled needs a hybrid inverter so usually means swapping your inverter; better economics on a new install. We assess your existing setup and recommend the cleanest path.
It depends on how much of your solar you use at night, your tariff and the size of the battery. Every kWh you store and use yourself is a kWh you do not buy back from the grid at night. We work out your figures from your last power bill and show them on your quote, so you see your own numbers, not an average.
Lithium-iron-phosphate (LFP) batteries (Sungrow, BYD, Tesla Powerwall 3) are rated for 6,000+ cycles, roughly 15 to 20 years at one cycle a day. Warranties are typically 10 years with a guaranteed minimum capacity (around 70% retained at year 10). Lithium-NMC chemistry (older Powerwall 2) is shorter, around 10 to 12 years real life.
Read first
Guides on Home Batteries
Solar Battery Rebate QLD 2026: What Queensland Homeowners Actually Get
What the solar battery rebate is worth in Queensland in 2026, why it is the same figure everywhere in Australia, and why it drops 16 percent on 1 January 2027.
Tesla Powerwall 3 vs Sungrow vs BYD: Home Battery Comparison (2026)
An honest 2026 comparison of the three most common home batteries in Australia, Tesla Powerwall 3, Sungrow and BYD, on capacity, power, warranty and price.
Are Home Batteries Worth It in Mackay in 2026? An Honest Cost-Benefit Analysis
Federal battery rebate, Ergon feed-in tariff drop, cyclone backup. Honest 2026 cost-benefit analysis of home batteries for Mackay homeowners.
