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Electrek reports Base Power unveiling its 39.2 kWh Core home battery alongside a $1B Series D raise.

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Home/Energy/Base Power unveils 39.2-kWh Core battery after landing $1B in fresh capital
VERIFIEDBy Xavier Rivera·Monday, August 3, 2026 at 4:38 PM AST·1 min read

Base Power unveils 39.2-kWh Core battery after landing $1B in fresh capital

Base Power has raised $1 billion to commercialize its new 39.2-kWh Core home battery that provides up to 36 hours of backup and installs in under an hour. The funding will speed deployment of a system three times larger than typical home batteries that also participates in virtual power plants.

Source:Electrek
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Base Power unveils 39.2-kWh Core battery after landing $1B in fresh capital
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TL;DRAI · 60 sec read

Base Power introduces its 39.2 kWh Core battery after raising $1 billion. The unit supplies up to 36 hours of whole-home backup, installs in under an hour, and joins the company's virtual power plant network during normal grid operation. The capital will speed rollout of the large residential storage system.

The Austin energy startup Base Power introduced its largest residential storage product to date, the Core. Core offers 39.2 kWh of storage and reportedly can keep an entire house running for up to 36 hours while being installed in under an hour.
Base states that Core stores about three times the capacity of a typical home battery.
The company built the system to deliver two distinct functions: automatic whole-home backup power when the grid fails and participation in Base’s expanding virtual power plant network while the grid is active. Base states that Core stores about three times the capacity of a typical home battery.
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Two linked units would provide 78.4 kWh and extend runtime to as much as 72 hours under reduced electricity consumption. Actual duration varies by load; running air conditioning, for example, will deplete reserves more rapidly.

Installation completes in under an hour. The battery supports solar integration and features a built-in port for recharging from a portable generator. Through the Base app, owners receive real-time estimates of remaining backup time calculated for both normal and conservation usage patterns.
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The $1B funding will accelerate rollout. Base Power announced the Core battery at the same time as its latest capital raise. The company intends to scale deployment of the oversized storage product that it says can be installed quickly while delivering extended backup.
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