Solar Installers Sydney | Opera Solar Energy
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Solar Batteries
In Sydney and across NSW
At Opera Solar Energy, we offer advanced solar battery installation in Sydney to help homes and businesses store excess solar power for use day or night. Whether you’re seeking cheap solar battery solutions or premium systems with long-term reliability, we provide tailored energy storage options backed by expert installation and government rebates. Power your property even during outages, cut grid dependence, and enjoy peace of mind with our trusted solar battery systems.
Power Your Future with
Reliable Solar Battery Storage in Sydney
At Opera Solar Energy, we help homeowners and businesses across Sydney and New South Wales take full control of their energy usage with high-quality solar battery storage solutions. Our advanced battery systems store excess energy generated by your solar panels, allowing you to use clean power day or night — even during grid outages.
All our solar power batteries are designed to integrate seamlessly with existing solar panel installations, maximizing energy efficiency and reducing reliance on the grid. Most of our battery systems also come VPP-enabled, allowing participation in Virtual Power Plant networks for additional savings and energy resilience.
Why Solar
Batteries
What are Solar Batteries?
A solar battery, also known as a solar energy storage battery (system), is a device that stores the excess electricity generated by a solar power system for later use. It allows homeowners and businesses to maximize the utilization of solar energy by storing the electricity produced during the day and using it during the night or when the sun is not shining.
How do Solar Batteries work?
Solar batteries work by storing the excess electricity generated by solar panels in a chemical form. The most common type of solar battery is a rechargeable lithium-ion battery, similar to the batteries used in electric vehicles and portable electronics. Other types of batteries used for solar energy storage include lead-acid batteries and saltwater batteries.
When sunlight hits the solar panels, they convert the energy into electricity, which can be used to power appliances and other electrical devices. If the solar panels generate more electricity than is immediately consumed, the excess energy is sent to the battery for storage. The battery then stores the energy for later use, such as during the evening or power outages.
During times when the solar panels do not generate enough electricity to meet the demand, such as at night or on cloudy days, the stored energy from the battery is discharged and used to power the home or business. This helps reduce reliance on the electrical grid and can provide backup power in case of outages.
Why get a SOLAR Battery?
Solar batteries allow you to store solar energy to use in the evening and at night and power outages. When you have a battery, you will borrow less energy from the grid and pay less money to your electricity company every quarter on your power bills.
Time of Use (ToU) tariffs are becoming more popular. These tariffs charge you high per kWh charges during the peak periods e.g., 5 pm-9 pm. If you don’t have a battery, TOU will increase your bills significantly. However, an appropriately sized battery with sufficient panels can help you during these peak periods and borrow electricity from the grid during off-peak periods.
Some batteries have also backup option so if a blackout hits you can still power your home.
You can also join Virtual Power Plant supporting your grid whenever they need support. With this one, you will also get paid for it making it another source of passive income.
How to ensure your battery has enough power and energy?
Most people end up buying batteries looking at the size without considering their utility. For example, if you buy a Sungrow battery of 8kW and your night usage is 14kW, then your battery won’t pull off your night usage and you end up borrowing an additional 6kW from your grid.
Another mistake which we have identified while talking to our customers, they look at the price and buy the battery without considering their actual needs. You should buy the battery by understanding your needs and requirements. Thereafter, you can make a list of pros and cons to finalise the product.
Premium Solar Battery
Brands We Offer
Opera Solar Energy supplies and installs a wide range of trusted, CEC-approved solar battery brands, including:
Our Solar
Battery Range
Tesla
Powerwall 3
Powerwall is a battery that stores energy, detects outages and automatically becomes your home’s energy source when the grid goes down. Unlike generators, Powerwall keeps your lights on, and phones charged without upkeep, fuel or noise. Pair with solar and recharge with sunlight to keep your appliances running for days. Powerwall reduces your reliance on the grid by storing your solar energy for use when the sun isn’t shining. Use Powerwall alone or combine it with other Tesla products to save money, reduce your carbon footprint and prepare your home for power outages.
Key Features
- 13.5kWH with 100% depth of discharge
- 90% Round Trip Efficiency
- Floor or Wall mounted Installation
- Indoor or Outdoor installation
- 7kW peak power or 5kW continuous
- Quick Backup Transition
- Pure Sine wave output
- 10-year warranty
Sungrow
SBR
The powerful SBR Sungrow battery is one of the smartest batteries for residential energy storage solutions. It is based on 3.2kWH storage modules that can be upscale from 9.9kWH to 25.6kWH. It also provides excellent benefits like backup power in a power outage. Incorporated in 1977, Sungrow is a global leader in solar inverters. Over the past years, they have grown massively in Australia accounting 23% share of the solar inverter market with a local warehouse and support centre.
Key Features
- Small, lightweight, and easy to install
- Modular battery capacity making to easier to add batteries up to 25.6kWh
- 100% usable energy coupled with 30A continuous charging for high performance
- Lithium-ion phosphate battery chemistry
- Blackout protection mechanism
- Floor Mounting
- Indoor or Outdoor installation
- Natural convection cooling method
- iSolar Cloud monitoring platform
- 10-year warranty
Sonnen
Evo
The Sonnen Evo battery is a fully integrated AC coupled solar battery storage system designed for outdoor and indoor installations. It comes with 10kWh & IP56 outdoor rating and complies with AS/NZS 5139 standard for outdoor or indoor installations. With backup solar power, intelligent battery management system makes it perfect options for households.
Key Features
- Compatible with high-power PV modules and bifacial modules
- Lithium-ion phosphate battery
- 10kWh of usable solar energy storage capacity
- Indoor or Outdoor installation
- Designed and Manufactured in Wildpoldsried, Germany
- Quick Backup Transition
- Backup solar power with 5kW continuous and 7kW surge capacity
- Black start function that “wakes” up an AC coupled PV system when grid is down
- 10-year warranty
- Floor Mounting
The FranklinWH
Battery ESS
The FranklinWH Battery ESS is an American-designed, Australian-ready energy storage system, offering seamless integration with solar, grid, and generator power for optimized energy management. Listed on the Clean Energy Council (CEC) and AEMO DRM website, FranklinWH prioritizes safety, reliability, and energy independence for Australian homes.
Key Features
- Warranty & Capacity: 12-year warranty with 43 MWh capacity.
- Inverter Compatibility: Fully inverter-agnostic, supporting all inverter types.
- Safe LFP Battery Chemistry: Uses CATL Tier 1 LFP for enhanced safety and stability.
- Scalability: 13.6 kWh usable capacity, expandable up to 15 units.
- Backup & Recovery: UPS-like switch times, blackout start, generator compatibility, and smart load management
Ideal for Australian homes, FranklinWH offers a quiet, high-surge power solution tailored to meet diverse energy needs.
Save More with
Government Rebates
From July 1st, eligible NSW residents can access the new Australian Government’s Cheaper Home Battery Rebate, offering:
Up to 30% off
battery installation cost
Subsidy of $370 per kWh
of usable battery capacity
Support for systems
up to 50kWh
Get in touch with Opera Solar Energy to check your eligibility and maximise your savings.
Transparent Solar
Battery Costs
We believe in honest pricing. The cost of solar battery installation in Sydney varies depending on brand, capacity, and whether you’re retrofitting or installing with a new solar system. On average, residential systems range from $5,000 to $12,000 after rebates. Contact us for a free solar battery quote tailored to your needs.
Solar Battery Installation
in Sydney
Our professional installers are certified and experienced in handling complete solar battery installations across Sydney and NSW. We manage the process end-to-end — from free quote and consultation to setup, connection, and after-sales support. Whether you’re upgrading an existing solar system or starting fresh, we’ve got you covered.