Why You Should Install a 30–50kWh Solar Battery (And Not Settle for Less)
Thinking about a solar battery? Don’t make the rookie mistake of going too small.
Right now, thanks to a massive new federal rebate, everyday households can install premium 30–50kWh batteries (the kind that used to be reserved for off-grid farms and big estates) for as little as $5,499.
But here’s the thing: you only get one shot at claiming the rebate. And that means choosing the right battery size isn’t just a technical decision, it’s a financial one. Go too small, and you leave thousands in government funding on the table. Go smart, and you set yourself up for maximum savings, longer battery life, and faster payback.
Here’s why bigger is better and why now is the moment to act.
1. Get the Full Rebate. Once.
The Australian Government is offering a one-time home battery rebate — worth up to $16,800. But here’s the catch:
✅ It’s only available once per household
✅ The rebate scales with battery size
So if you go small, you leave thousands on the table. But if you go big — 30 to 50kWh — you unlock the maximum rebate and only pay 25–30% of the true cost.
That means you pay just $5,499–$6,500 installed for a system worth over $20,000.
👉 Bigger battery = Bigger rebate. Use it wisely.
2. Plug Into Grid Perks with ZEROHERO
We’ve partnered with GloBird Energy’s ZEROHERO plan, giving battery owners three money-saving advantages:
🔌 Free Charging: 11am–2pm, charge your battery from the grid — for free.
💰 Get Paid for Nothing: 6pm–8pm, don’t draw power, and get $1 credit per day.
⚡ Export Bonus: 6pm–8pm, send your stored energy to the grid and earn 15c/kWh.
It’s not just about storing solar. It’s about turning your battery into a smart, money-making asset.
3. ROI in Under 2 Years
Let’s talk return on investment.
If you cycle 20kWh per day, and the difference between your feed-in tariff and electricity cost is 40 cents, you're already saving $8 per day.
That’s nearly $3,000 per year — and that’s before factoring in the ZEROHERO benefits.
👉 At that rate, your battery pays for itself in less than two years.
4. Bigger Battery = Longer Life
Here’s what most installers won’t tell you:
Batteries degrade faster when they’re constantly drained to the bottom. But with a 50kWh battery, you only cycle part of the capacity (say 20–30kWh overnight). That means the battery never fully empties, reducing stress and extending its life.
At 70% depth of discharge (DoD): over 8,500 cycles = up to 23 years lifespan
At 95% DoD: closer to 1,000 cycles = just 3 years
👉 A bigger battery doesn’t just store more power — it lasts longer too.
The Bottom Line
✔️ One rebate. Use it on the biggest battery you can.
✔️ Fast payback (under 2 years) + daily savings
✔️ Smart grid plan = free charging, bonus payments, and export income
✔️ Longer life = better value, year after year
Don’t think small. Think smart. Install once. Save for decades.
