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How much battery storage do you need? Well, that depends on how much energy your home uses and your future plans. If you’ve got a lot of appliances running or want to keep the lights on during a blackout, you might need a bigger battery.
And if you’re considering adding more solar panels down the track, it’s worth considering a system that can grow with you. Let’s dive into how to figure out the correct battery size for your home.
Powerwall 3 Storage Capacity
- Fixed at 13.5 kWh.
- You can install multiple Powerwalls. The separate units are combined in 13.5kWh increments.
- Currently, four can be stacked together for a total of 54kWh. Soon, in 2025, Tesla will release “dummy” Powerwalls, which are just the battery without the inverter. They’ve said that you’ll be able to stack up to 16 together for a whopping total of 216kWh.
SigenStor Storage Capacity
- Modular means you can start with 5 kWh/8kWh and expand to 48 kWh. They’re like Lego toy blocks. At PSC, we only carry the 8kWh version of the battery blocks. We feel that 5kWh isn’t enough to reap a solar battery’s potential. It will struggle to keep up with most systems.
- Each stack of six batteries (48kWh) can be stacked with an unlimited number of others to scale up for commercial installations.
- Works well for homeowners who want to start small and increase storage over time.
If you want flexibility in storage size and the ability to add more storage later easily, SigenStor is the better option.