Heads up: this model is effectively discontinued. We keep the page for reference, but see the verdict before buying one new.
Effectively discontinued: after SunPower's 2024 bankruptcy the surviving brand does not sell SunVault new and steers buyers to Enphase, so we do not recommend it as a new purchase.
Best for: not recommended new
Figure - Specs to scalebars vs the largest in our database
Specifications
Chemistry
LFP
Usable capacity
12 kWh
Continuous power
6.8 kW
Peak power
10 kW
Round-trip efficiency
86%
Depth of discharge
Not published
Warranty
10 years (OEM support disrupted after the 2024 bankruptcy)
Scalable to
13 kWh base, expandable to 26 kWh
Backup scope
Whole-home capable
Inverter
Integrated
Weight
528 lb
Dimensions
64.5 x 26 x 14.8 in
Efficiency basis: CEC weighted round trip. Round-trip numbers are only comparable across brands when measured the same way, so read the basis before comparing.