HOME BATTERIES
Solar batteries for Mackay homes
Retrofit or new-solar packages. Tesla Powerwall, Sungrow, GoodWe and Deye. Sized against 12 months of your bill, not a salesman's guess.
5.0 · 7 Google reviews
48-hour fixed-quote turnaround for Mackay businesses.
Next Phase Solar installs home battery storage for Mackay homes, retrofit or paired with new solar. Tesla Powerwall, Sungrow, GoodWe and Deye systems, sized against 12 months of your real bill data, with federal battery rebate paperwork handled.
Brands and systems we work with
How we work
From discovery call to handover, a six-stage path
Discovery call
Week 0. 30 minutes. We cover load profile, roof type, grid-connect feasibility.
Data analysis
Week 1 to 2. You hand over 12 months of interval data. We model three scenarios with payback and IRR.
Site assessment and quote
Week 2. 48-hour PDF delivery. Hardware, NPV, sensitivity analysis, finance options.
Sign and engineer
Week 3 to 6. Final design, Ergon lodgement, procurement. Deposit 20%, progress payments against milestones.
Install and commission
Week 7 to 9. On site 5 to 14 days depending on size. Zero shutdown of core operations.
Handover and monitor
Week 10. Monitoring live, O&M schedule set. First quarterly performance report lands at week 14.
What's included
What home batteries includes
- 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
- Federal battery rebate paperwork handled
- 10-year battery warranty support
Service areas
Mackay-local service hub, with project crews across the Whitsundays and Bowen Basin.
What our customers say
Reviews from real Mackay businesses and homes.
Matt Harris
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!
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Google
Donna Snell
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.
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Google
Wellington
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.
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Google
Meghan Rance
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!
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Google
Drew Nuckolls
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.
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Jon Paul
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.
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Bailey Hill
Could not be happier with my solar installation. I got quotes from several companies, since there are loads of them around and the market is competitive, and NPSolar honestly gave me the best price by far. I had also read plenty of reviews of other companies and they all seemed to take months to actually get the job done. NPSolar installed my 14 panels and batteries in a single week, at the best price, which felt almost too good to be true. Huge thanks to Brad, who was friendly, talked me through all my questions and made the whole process easy. If you are in Mackay and looking at solar, definitely get a quote from them.
Posted on
Google
Battery retrofits we have done
Drag to compare the wall before and after the battery install.
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.
Yes. Live since 1 July 2025, the federal scheme effectively gives roughly 30% off a residential battery (capped). A 10 kWh battery that costs around $11,500 installed gets a discount of approximately $3,000 to $3,500. The rebate is claimed at point of sale, we handle the paperwork.
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 24 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.
With Ergon FIT at 4 to 7 c/kWh and grid import at 28 to 35 c/kWh, every kWh you self-consume saves about 23 to 30 c vs exporting. A 10 kWh battery cycling once daily saves around $800 to $1,000/yr. With the federal rebate the payback is typically 7 to 10 years, lining up with battery warranty life.
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.