Sonnen Batteries, widely known by the brandSonnenBatterie, are quickly establishing themselves as a leading player in the Australian solar storage market. They’ve also started manufacturing locally at their Adelaide plant. Contact online >>
Sonnen Batteries, widely known by the brandSonnenBatterie, are quickly establishing themselves as a leading player in the Australian solar storage market. They’ve also started manufacturing locally at their Adelaide plant.
Sizes available: 5 kWh to 15 kWh. (expandable in steps of 2.5 kWh)One-way efficiency: 98%Batterie type: Lithium Ferro phosphateThe output: 90% of its storage capacity. (5kWh outputs 4.5kWh) sign lifespan: 20 yearsWarranty: 10 years or 10,000 charge cyclesIndoor/ Outdoor: Can be mounted outdoorsSystem intelligence: Predictive charging for optimal efficiency
Sonnen claims that their battery efficiency is close to 98% from all installations. So you can get the following outputs even if you derive an average of 90% output-
The maximum inverter efficiency for the 8th generation sonnenBatterie eco built-in inverter is 96%. The maximum battery efficiency given by the company is 98%. Sonnen doesn’t confirm whether the values are round-trip efficiencies, so we will assume they are one-way.
That means the maximum round trip efficiency you can derive with respect to power into power out is around 87%. So in order to get an output of 1 kWh of energy, you will need approximately 1.15 kWh of solar energy.
Sonnen says that their batteries are designed to last for 20 years. They even provide a warranty for ten years or 10,000 charging cycles which are the highest in the industry. You will probably reach close to 20 years before you even complete the 10,000 cycles.
Even if you have 2 charging cycles each day, it will take 13.7 years to reach 10,000 cycles. That means sonnenBatterie eco can have a total life of close to 20 years as claimed by the company.
However, like all rechargeable batteries, you need to maintain a controlled environment to derive a longer lifespan. Sonnen Eco models have an ambient temperature range of 5 degrees to 40-degree Celsius and even offer a cooling system in case you exceed the limits.
Note: Sonnen is a smart battery and there’s no damage even if it’s fully charged and your PV is still generating. The battery will cut off the power and export the energy back to the grid.
Tesla is a reputed name in the world of renewable energy. Along with electric cars, Tesla’s home energy storage systems have also gained popularity among homeowners.
Based on the above specs, I’m a little torn. The price of each system is pretty similar and so are the rest of the specs. I would go with a Sonnen as they can withstand more extreme temperature fluctuations when mounted outdoors. They also have superior round-trip efficiency.
Residents of South Australia can enjoy reduced rates on their solar panel installations with storage batteries. It’s part of the $100 million Home Battery scheme from the South Australian Marshall Government. You can get direct subsidies, low-interest loans, or a combination of both on renewable energy systems.
Various financing options are also available from the Commonwealth Government''s Clean Energy Finance Corporation. Sonnen systems qualify for being a safe, modern and easy-to-use technology and hence the cost savings.
Sonnen offers a unique way to lower your energy bills through the sonnenFlat scheme. You can apply to join the Sonnen community and get clean energy instead of depending on conventional providers like AGL or Origin.
When you sign up for sonnenFlat, you are giving permission to Sonnen to take control of your batteries and inverter. Sonnen becomes your energy retailer and supplies you with all the power you need in excess of your household’s production. Sonnen acts as a power exchange for all its customers enabling you to draw or export power based on your needs.
The Economy plan will be suitable for most Australian households as the yearly energy requirement is below 7,500 kWh. But if you have high-energy needs, you should consider the Family or Autonomous plans.
If you exceed the yearly allowance, you will be charged a competitive rate by Sonnen per kWh. But in some places like SA and TS, the grid costs less than Sonnen rates.
sonnenFlat also offers feed-in tariffs, but they are generally lower compared to traditional utility companies like AGL or Aurora. You also need to exceed the Annual Export Threshold as follows-
As you won’t have the knowledge to install a solar battery yourself, there is no point in going to buy one and then ringing an installer. Plus installers get wholesale rates and sell on for a markup.
About Cost of sonnen battery systems
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