The upfront cost of a battery system is definitely something to think about, but what really matters is the long-term value it brings to your home.
Investing in a high-quality system means lower energy bills, better reliability, and fewer headaches down the track.
If it doesn’t last as long, perform well, or come with solid warranty support, you might pay more in the long run.
The following pricing includes installation.
Powerwall 3 Pricing
- Battery + Backup Gateway: $13,600.
- Installed cost: $15,990 for a retrofit, $23,990 with new solar.
SigenStor Pricing
- Starts at $9,990 for an 8kWh system.
- Total cost of the energy system varies based on battery size, inverter capacity, and whether your home is single-phase or three-phase.
- Can be cheaper or more expensive than Powerwall 3, depending on how much storage you need.
Both systems qualify for solar battery rebates, which can help lower costs.
However, the rebate is capped at 28kWh, which means you would be limited to two Powerwalls (27kWh) or three SigenStors (24kWh).
You can expect around $2,000 off Powerwall with the battery rebate per 13.5kWh unit.
You can expect around $1,100 off SigenStor with the battery rebate per 8kWh unit.
The battery rebate’s value changes slightly from day to day because of how the scheme is set up.