Sizing from your data
Your bills and your solar monitoring, not a brochure. We show you how much of the evening the battery will cover in summer and in winter.
Solar batteries · Newcastle, the Hunter and the Coast
Keep the poweryoumake.
Store the solar you are exporting for cents and use it when the grid is dearest. Sized to your evening load, set up for backup if you want it, with the federal discount shown on the quote and the paperwork done by us.
- SAA accredited S9022865
- 2026 Best Rated Solar Installer
- Top 20 All Star NSW
- Level 2: grid connection by us
- 5-year workmanship warranty
- Rebate paperwork handled
What a battery changes
Your eveningson your own power.
Most solar homes export their power in the middle of the day for a few cents, then buy it back in the evening at several times the price. A battery closes that gap. The panels fill it during the day, the house runs on it from dinner to bedtime, and the grid becomes the backup rather than the main supply.
Sizing is where it goes right or wrong. A battery that is too small runs flat at eight o'clock; one that is too big never fills in winter. We size it to your actual evening usage from your bills and your monitoring, and we tell you if your current solar needs more panels to keep it charged. Most existing systems will take a battery. We check yours and say so either way.
- Sized to your evening load, from real usage
- Tesla Powerwall among the established brands we install
- Backup for the essentials when the street goes dark
- Federal discount applied on the quote, paperwork lodged by us
The federal battery discount drops again on 1 January 2027, then every six months after that.
See what you are eligible forWhat is included
From sizing tothe first blackout.
Established brands
Batteries with real Australian support and warranties you can read. Each product and its warranty is listed on your quote.
Backup set up properly
If you want the fridge, lights and internet to stay on in an outage, we wire the backup circuits so it just happens.
Retrofits to existing solar
Most systems can take a battery. We check the inverter and the board, and tell you if more panels would help keep it charged.
Rebates and paperwork
The federal discount applied on the quote and the NSW virtual power plant incentive explained, with everything lodged by us.
Service and diagnostics
Monitoring set up on your phone, and diagnostics and repairs on batteries other people installed.
What support looks like afterwards
Had a issue with a grid outage with Tesla Powerwall batteries late in the afternoon and had no knowledge of how to deal with it. Contacted DJM Electrical 8:30 am next day and Dak was at my home before 11am.
Margaret Smith · Post-install support
Straight from Google
What people sayafter the job is done.
Live reviews from our Google Business Profile, rated 5.0. Read them before you ring us.
Good to know
Batteryquestions we getevery week.
Do I need to replace my existing solar to add a battery?
Usually not. Most existing systems will take a battery, either through the existing inverter or with a battery that has its own. We check yours and tell you either way, and whether a few more panels would help keep it charged in winter.
How much storage do I need?
Enough to cover your evening and overnight usage on a normal day, which for most homes is somewhere around 10 to 15 kilowatt-hours. We work it out from your bills and your monitoring rather than guessing, and we show you the summer and winter picture.
Will it keep the power on in a blackout?
If it is set up for backup, yes. Some batteries switch over automatically when the grid drops. We wire the essentials, usually the fridge, lights, internet and a few power points, onto the backup circuit so they keep running.
How long do batteries last?
Most quality home batteries carry a warranty of around ten years and are designed to go well beyond it. The exact terms for the battery you choose are on your quote.
What rebates are there?
The federal discount on home batteries is applied up front on your quote through us as an accredited installer, and eligible NSW households can borrow the balance at zero interest through the Home Energy Saver loan. The discount steps down every six months, so we show you the current numbers at the assessment.
How long does a battery install take?
Usually a day, including commissioning and setting up the monitoring on your phone. Larger systems or a combined solar and battery install can run longer, and the timeline is on the quote.
Is a battery worth it for us?
It depends on how much of your usage is in the evening and what you pay for it. For some homes the answer is a clear yes; for a household that uses most of its power in the daytime, it may not be yet. We will tell you honestly, with the numbers.
Does it need maintenance?
Very little. We set up monitoring so you and we can see it working, and the same crew that installed it is who you ring if it ever throws a fault.
Related services
People alsoask us about.
Where we work
Obligation-free quotes
See the numbersfor your place.
Tell us what solar you have, roughly what you pay in the evening, and the suburb. Dak comes out, sizes the battery to your usage, and shows the rebate on the quote.