Base Power has raised another $1 billion to scale its home battery model, betting that distributed storage in residential backyards can help strengthen the power grid more efficiently than large centralized sites.
The new Series D round values the company at $13 billion after money, marking a major step for a startup that has already deployed more than 500 megawatt-hours of storage. Base Power says it is now installing about 100 batteries a day and aims to double that pace by year-end.
The company also introduced a new unit, Base Core, built at its Austin factory. Each battery holds 39.2 kilowatt-hours of energy, and customers can choose one or two units depending on their needs. Base Power currently operates in Texas and Illinois.
Unlike traditional home battery systems that require a large upfront payment, Base Power uses a subscription-style approach. In Houston, for example, customers pay a modest installation fee, a monthly charge, and a standard electricity rate, while the company manages the stored power and can feed it back to the grid during peak demand.
The timing reflects a broader shift in energy infrastructure as electrification and AI-driven data center growth push electricity demand higher. By combining home backup power with grid support, Base Power is positioning residential batteries as a flexible part of the modern energy system. The model could help shape a more resilient and distributed power future.
