SOLAR BATTERY STORAGE SYSTEM
50KWh
Large Homes & Small Business
$15,999*
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50kWh Solar Battery
A 50kWh solar battery is a high-capacity energy storage solution designed for large homes, farms, workshops, small businesses and commercial properties with higher energy demand. It stores excess solar energy generated during the day so you can use that power at night, during peak electricity rates or during grid outages.
For Australian properties with larger daily electricity usage, a 50kWh battery can help reduce grid reliance, improve backup power support and make better use of your solar system. The right setup will depend on your energy consumption, solar panel capacity, inverter size, backup requirements and installation design.
DISCOVER THE BEST SOLAR BATTERY FOR YOUR SOLAR SYSTEM
30KWh
Solar Battery
High-usage small & medium homes
$
7,999
*
Small Homes
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
40KWh
Solar Battery
Medium homes & business
$
10,799
*
Medium Homes
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
50KWh
Solar Battery
Large homes & businesses
$
15,999
*
Large Homes
- Complete Energy Solution
- 24/7 Power Backup
- Seamless Integration
- High-Quality Energy Storage
What Exactly Is a 50KWh Solar Battery?
In plain terms, a 50kWh solar battery stores up to 50 kilowatt-hours of energy for later use. In most solar setups, it stores excess energy generated by your solar panels during the day. Depending on the system design, it may also be charged from the grid during off-peak periods.
It works like a large rechargeable power bank for your home, farm or business. At night, during peak electricity rates or during blackouts, you can draw energy from the battery to support selected loads and reduce reliance on the grid.
These are not your average home batteries. They are larger-capacity systems designed for high-usage environments such as large homes, farms, workshops, small factories and commercial operations looking to store more energy and reduce electricity costs.
What Can a 50kWh Solar Battery Power?
Here’s a simple way to picture it:
- Essential loads such as lights, fridges, fans and basic appliances
- Office equipment such as computers, printers, Wi-Fi, POS systems and security systems
- Refrigeration, lighting and selected small business equipment
- Selected home and business loads during peak-rate periods or power outages
- Backup support for large homes, farms, workshops, offices, clinics and retail spaces
With the right solar system and inverter setup, a 50kWh battery can support both grid-connected and off-grid applications. For grid-connected homes or businesses, it can help store solar energy for peak-rate periods and backup use. For off-grid sites, it can provide stronger energy support when the system is properly designed.
Average 50kWh Battery Backup Time by Household or Business Load
The backup time of a 50kWh solar battery depends on how much electricity your home, farm or business uses during the backup period. Lower energy usage can make the battery last longer, while heavy loads such as air conditioning, heating, EV charging or business equipment will drain it faster.
| Average Load | Estimated Backup Time |
|---|---|
| 1kW essential load | Up to 50 hours |
| 2kW household load | Up to 25 hours |
| 5kW medium load | Up to 10 hours |
| 10kW high load | Up to 5 hours |
| 15kW heavy load | Up to 3.3 hours |
These backup times are estimates only. Actual performance may vary depending on usable battery capacity, inverter output, appliance usage, battery condition and whether solar panels are generating power during the day.
What Is a Kilowatt-Hour (kWh)?
Before diving too deep, let’s clear something up. A kilowatt-hour (kWh) isn’t about speed or size — it’s about energy use over time. Think of it like this: if you use a 1,000-watt (1kW) device for one hour, that’s 1kWh of energy.
So, running a 2kW aircon for 5 hours? That’s 10kWh. Pretty simple once you get the hang of it. This unit helps us understand not just how powerful something is, but how much energy it eats up over time.
How Many Kilowatt-Hours Do You Actually Need?
This is where it gets personal. Every business is different. A small café running a few fridges, lights, and coffee machines might use around 20–30kWh per day, whereas a commercial warehouse with machinery or refrigeration units might chew through 60–100kWh daily, easy.
So if your daily usage hovers around 40–60kWh, a 50kWh battery could be the sweet spot — either covering most of your needs or acting as a solid backup during peak demand or outages.
Benefits of Installing a 50KWh Solar Battery
Let’s be real — this isn’t a small investment. But here’s what you’re getting in return:
- Energy Independence: You’re not at the mercy of grid failures or rate hikes.
- Massive Backup Capacity: Keeps you running during storms, outages, or weekends.
- Offset Peak Pricing: Use stored power when grid prices are sky-high.
- Great for VPPs (Virtual Power Plants): Some systems let you sell power back to the grid.
- Lower Carbon Footprint: Especially if paired with solar, it’s a big step toward sustainability.
And in a country like Australia — where the sun is your best friend — storing that free power just makes sense.
Potential Drawbacks to Consider
Not everything’s sunshine and savings though. A few things to keep in mind:
- Space Requirements: These batteries are big, so you’ll need room.
- Maintenance: While most are low-maintenance, it’s still another system to monitor.
- Payback Period: Depending on your usage, it might take 6–10 years to fully recover costs.
So yeah, it’s not for everyone. But if you’ve got consistent energy needs, it’s often worth the long game.
Is 50KWh Enough for Commercial Use?
For a lot of commercial setups, yes, 50kWh is enough — especially when paired with a solid solar panel array (say, 15–20kW of panels). It’s not unlimited, of course, but it’s a strong starting point for:
Retail shops
Clinics or small offices
Small-scale farms or wineries
Warehouses with moderate equipment
That said, energy-hungry operations (like industrial workshops or cold storage) might need something even larger — say 80–100kWh or more. Still, 50kWh is often a sweet middle ground that covers most use cases without overinvesting.
50KW Solar Battery Price in Australia
As of 2026, prices for a 50kW solar battery in Australia start from around A$15,999, depending on the brand, battery chemistry (like LFP or NMC), and whether it’s a modular or all-in-one unit.
Prices can vary based on:
Depth of Discharge (DoD)
Scalability (can you add more units later?)
Smart features (remote monitoring, VPP-ready)
If you’re considering a 50kWh system for your home & business, getting a tailored quote is the best next step.
Federal Battery Rebate for 50kWh Solar Batteries
A 50kWh solar battery may be eligible for the Australian Government’s Cheaper Home Batteries Program if it meets the approved battery, solar connection and installer requirements.
From 1 May 2026, STC support is calculated in tiers:
| Usable Battery Capacity | STC Support |
|---|---|
| 0–14kWh | 100% STC factor |
| Above 14–28kWh | 60% STC factor |
| Above 28–50kWh | 15% STC factor |
For a 50kWh battery, STC support can apply up to the first 50kWh of usable capacity. The final rebate amount depends on usable capacity, battery model, installation date, STC value and eligibility conditions.
50KWh Battery Lifespan and Warranty Insights
Most commercial-grade solar batteries come with a warranty of 10–15 years, with 4,000–6,000 cycles depending on battery chemistry and usage. That’s roughly one full charge and discharge per day for over 15 years.
Look out for:
Cycle life guarantee
End-of-warranty capacity (e.g., still holds 70–80% at year 10)
Manufacturer reputation
Support & servicing availability in Australia
Lithium iron phosphate (LiFePO₄) batteries are a popular choice for longer lifespan and thermal safety.
Is It Worth the Investment for Your Home or Business?
If your energy use is consistent, daytime-heavy, or you sometimes face grid instability, investing in a 50kWh solar battery can be a smart move for both homes and businesses.
Over time, you may notice real savings and practical benefits through:
- Feed-in tariffs or Virtual Power Plant (VPP) programs — depending on your retailer, location and system setup, you may earn credits or improve returns by exporting excess solar energy or joining an eligible VPP.
- Federal and state battery incentives — eligible programs may help reduce upfront costs, depending on location, battery size, system setup and installer requirements.
- Avoided downtime during outages — keep selected home or business loads running when the grid is down, if your system includes a compatible backup setup.
- Reduced peak energy rates — store solar power during the day and use it when electricity prices are higher.
It’s not just about saving money. A 50kWh battery can also help improve energy control, backup support and long-term energy flexibility.
Frequently Asked Questions
Can I go completely off-grid with a 50kWh battery?
Yes, if your usage matches and you have enough solar input. But check your winter generation levels.
How much does a 50 kW solar battery cost?
The 50kW solar battery price starts from around $15,999 AUD. The final cost ay vary depending on the battery brand, system design, inverter type, installation requirements, and available rebates.
How long will a 50 kWh battery last?
The runtime of a 50 kWh battery depends on how much energy you use. For example, if your home uses about 5 kW of power at a time, a 50 kWh battery could theoretically last around 10 hours (50 kWh ÷ 5 kW = 10 hours). Actual duration varies based on appliances running, battery discharge limits, and inverter efficiency.
Can I stack batteries to go beyond 50kWh?
Yes. Most commercial battery systems are modular, allowing multiple units to be stacked to reach 80kWh, 100kWh, or more, depending on inverter and system design
How fast is 50kW charging?
A 50kWh solar battery typically charges in 4 to 10+ hours depending on the solar array size and sunlight conditions
How much space is needed for a 50kW solar system?
A 50kW solar system typically needs around 250–300 square metres of roof or ground space, depending on the panel size and layout.
WE INSTALL CEC APPROVED POPULAR SOLAR BATTERIES IN AUSTRALIA
- Tesla Powerwall
Great for storing solar energy at home because it is very efficient and lasts a long time.
- Sungrow Battery
Works well and is affordable. It can be used in homes and businesses.
- Sigenergy Battery
A dependable storage option that focuses on being eco-friendly and simple to use.
- Growatt Battery
A small, affordable option that works well.
- GoodWe Battery
A solar storage battery that is reliable, long-lasting, and very efficient.
- LG Chem Battery
Reliable and powerful. Perfect for homes or small businesses needing long-lasting backup.
