The Tesla company is a brilliant example of design innovation and marketing coming together to produce a high quality product for a very specific market. There is no doubt, it’s a beautiful looking product but it isn’t the only solar storage solution on the market.
The Tesla Powerwall is a battery only which means you still need to connect an inverter, a charge controller and all the software and communication tools. There are other options available that have all of these components in one complete system. It pays to do your homework and ensure you are comparing apples with apples.
Size and weight should also be taken into consideration when choosing a storage system. The Powerwall is 100kg so you need to ensure your garage wall is reinforced to ensure the safety of the unit. Other systems like the SolaXbox weighs 200kg with six batteries and stands upright, looking similar to a sleek, modern fridge. The Bosch storage system weighs 242kg with six batteries. Both SolaXbox and Bosch stand at 175cm tall.
The market choice for solar battery storage solutions is growing and that’s a good thing. It’ll drive prices down and give more households the opportunity to save money. It’s inevitable that battery storage will become a normal part of households over the next ten to twenty years.
We often get asked, is battery storage safe? If used properly and is well looked after, then yes. There are potential risks, but these risks are no different to the electrical risks already present in your home.
So, what is the future of solar storage?
A recent Climate Council report states the following findings in regards to solar storage:
- Half of all households in Australia are predicted to adopt solar systems with battery storage, with the market potentially growing to $24 billion.
- Solar PV systems with added battery storage will become the most economical solution to provide electricity.
- The rapidly falling cost of batteries is expected to make electric cars cost-competitive with conventional cars within the next twenty years, leading to much greater uptake.
- A battery storage system can almost double a household’s self-consumption of solar PV. Adding a 4 kWh battery to a 5 kWh solar system can increase the amount of self-generated solar electricity a household consumes from 30 to 60%.
- In Australia, most solar PV systems ‘pay for themselves’ in less than a decade. A Choice (2015) survey of 700 households with solar PV found the average payback period was 3 years and two months.