The 78.4 k Wh Base Core battery can keep your home running during an outage, installs in under an hour, and gives back to the grid — as home battery installations reach a record high | Tech Radar

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The 78.4 k Wh Base Core battery can keep your home running during an outage, installs in under an hour, and gives back to the grid — as home battery installations reach a record high

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Base Power raises funds to roll out a new Base Core model

It protects against power outages and gives back to the grid

The battery is available to purchase in Texas and Illinois initially

What with plug-in home solar becoming more widely available and household battery power storage increasingly common, there's growing momentum behind home energy solutions that help to lower electricity bills and reduce pressure on the grid.

There's more evidence with the news that Base Power just raised a cool $1 billion to scale its large Base Core home battery (via Interesting Engineering): the battery is available in 39.2 k Wh and 78.4 k Wh versions, and while it's capable of keeping your home running during power outages, it does a lot more besides too.

Base Power says the Core can be installed in under an hour, can be switched to seamlessly, and will handle extreme weather events too (it works in temperatures of -22 to 122°F or -30 to 50°C). If the standard power network goes out, the Base Core can keep your home running for 36-72 hours depending on capacity and configuration.

When the power's not out, the Base Core can still reduce your reliance on the grid and cut down on electricity bills. It's also designed to support the grid, feeding back electricity when additional capacity is needed (though there will always be some in reserve for you). That helps to keep up-front costs down.

Today, we're launching Base Core, our own battery designed & built in Texas, and announcing our $1B Series D to bring it to homes across the country. Three years ago, we started Base with a belief that batteries were the unlock to energy abundance. We saw battery storage as the… pic.twitter.com/3rj G59w Zv EAugust 3, 2026

The Base Core is now available in Texas and Illinois, with pricing dependent on your utility provider. A typical cost listed on the Base Power website is energy for 13.1¢ cents per k Wh, a membership fee of

19 per month, and a

695 up-front cost for the battery.

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As more of these batteries are installed, the better the system will work, in theory. Base Power says it's installed battery capacity has grown to more than 500 MWh over the past year, while more partnerships are being signed with electricity companies. After this latest funding round, the company is valued at $13 billion.

There certainly seems to be the demand for these money-saving, energy-storing batteries: last month Ars Technica reported that US home battery installations had hit a new high for the first quarter of 2026, with new units accounting for 673 megawatts of energy supply. For the same quarter, around 1,300 MWh was installed in terms of capacity.

Google has also invested in the idea of tapping into distributed household energy systems, via a deal with Voltus, in part to manage the growing demands of its AI data centers. For home users, the benefits are clear: protection against both rising electricity prices and an increasing number of power outages in vulnerable areas.

With plug-in batteries also on the road to legalization in some countries, it does feel like a home energy boom is coming – and that could help us all navigate the energy crisis and our soaring bills.

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Dave is a freelance tech journalist who has been writing about gadgets, apps and the web for more than two decades. Based out of Stockport, England, on Tech Radar you'll find him covering news, features and reviews, particularly for phones, tablets and wearables. Working to ensure our breaking news coverage is the best in the business over weekends, David also has bylines at Gizmodo, T3, Pop Sci and a few other places besides, as well as being many years editing the likes of PC Explorer and The Hardware Handbook.

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News, deals, reviews, guides and more on the newest computing gadgets
Start exploring exclusive deals, expert advice and more
Unlock and manage exclusive Techradar member rewards
Unlock instant access to exclusive member features
Get full access to premium articles, exclusive features and a growing list of member rewards