{"id":871383,"date":"2025-09-08T00:14:37","date_gmt":"2025-09-08T05:14:37","guid":{"rendered":"https:\/\/newsycanuse.com\/index.php\/2025\/09\/08\/this-google-backed-startup-makes-batteries-that-last-up-to-24-hours\/"},"modified":"2025-09-08T00:14:37","modified_gmt":"2025-09-08T05:14:37","slug":"this-google-backed-startup-makes-batteries-that-last-up-to-24-hours","status":"publish","type":"post","link":"https:\/\/newsycanuse.com\/index.php\/2025\/09\/08\/this-google-backed-startup-makes-batteries-that-last-up-to-24-hours\/","title":{"rendered":"This Google-backed startup makes batteries that last up to 24 hours"},"content":{"rendered":"
\n

Google is investing an undisclosed sum in Energy Dome, a startup developer of long-duration battery technology that pairs with solar, wind and other intermittent renewable sources to provide clean power around the clock.<\/p>\n

Energy Dome\u2019s CO2<\/sub> Battery uses liquid carbon dioxide to store electricity as it is generated. When the power source shuts off, the gas expands, running turbines to release energy to the grid. The initial edition of the technology can dispatch 20 megawatts for up to 10 hours. A future version would provide five times that capacity, according to the company\u2019s founder and CEO, Claudio Spadacini.\u00a0<\/p>\n

Google plans to support \u201cmultiple\u201d commercial deployments of Energy Dome\u2019s technology \u2014 already being used commercially in Sardinia, Italy \u2014\u00a0the company said in a July 25 blog post.<\/a> Generally, these installations would be sited near solar and wind facilities. \u201cSolar is very suitable and quite predictable,\u201d said Spadacini.<\/p>\n

Google didn\u2019t disclose the locations that would be touched by the new partnership, and it declined further comment about terms of the relationship.\u00a0<\/p>\n

Strong commercial potential<\/h2>\n

\u201cLong-duration energy storage has the potential to commercialize much faster than some of the other advanced clean energy technologies in our portfolio,\u201d said Google energy strategists Ainhoa Anda and Michelle Chang in the blog. \u201cThis means we can use it in the near term to help the electricity system grow more flexibly and reliably, alongside other tools we\u2019re developing, such as data center demand response.\u201d<\/p>\n

Energy storage deployments are expected to grow 35 percent for 2025, with a projected 94 gigawatts of additional capacity, according to researcher BloombergNEF<\/a>. Currently, the most dominant technology for stationary applications related to renewable energy are lithium-ion chemistries.<\/p>\n

The price of that technology is appropriate for applications requiring less than four hours of backup electricity during peak demand hours but is tougher to justify for long-duration applications, said Sam Jaffe, principal analyst at consulting firm 1019 Technologies. The artificial intelligence buildout offers one compelling use case.\u00a0\u00a0<\/p>\n

\u201cThe data center boom is coming, and that is an ideal application for longer duration storage paired with solar,\u201d said Jaffe. \u201cYou could do a completely renewable data center that way.\u201d<\/p>\n

Innovation: Using CO2<\/sub> to reduce CO2<\/sub><\/h2>\n

Energy Dome\u2019s technology involves a tent-like structure resembling an enclosed sports center that needs a lot of space: 10 acres for the small version of the battery. Still, that\u2019s less than 10 percent of the space in a typical solar-plus-storage installation, Spadacini said.\u00a0<\/p>\n

Competitive approaches include flow batteries, which use electrolytes to offer increased capacity, hydrogen fuel cells and pumped hydropower. The U.S., for example, has at least 100 gigawatts of pumped hydro, much of it located next to nuclear sites.\u00a0<\/p>\n

One advantage of Energy Dome\u2019s technology is the well-established supply chain of equipment for liquid CO2<\/sub>. \u201cWe are not dependent on made-in-China products,\u201d said Spadacini. That makes the technology eligible for some of the incentives offered under the One Big Beautiful Bill Act<\/a>.\u00a0<\/p>\n

One challenge will be making sure that Energy Dome\u2019s systems are kept leak-free. \u201cCO2<\/sub> is a very small molecule and will want to escape,\u201d Jaffe said.<\/p>\n

The backstory<\/h2>\n

Energy Dome was founded in 2019 with seed funding. The Italian startup announced an $11 million Series A raise from 360 Capital and Barclay\u2019s in November 2021, and has raised more than $135 million in all.<\/p>\n

The company employs about 90 people, with a small U.S. office in Cambridge, Massachusetts. Founder Spadacini, a mechanical engineer and serial entrepreneur, has also been involved with startups focused on biogas and geothermal applications.<\/p>\n

Google is Energy Dome\u2019s first publicly announced corporate contract. Engie is the startup\u2019s partner in Italy. The company\u2019s first U.S. utility contract is with Alliant Energy, which plans to use Energy Dome\u2019s technology for a storage project that can keep 18,000 Wisconsin homes online for up to 10 hours.<\/p>\n<\/p><\/div>\n

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Heather
\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><\/p>\n

\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n

Heather Clancy<\/h3>\n

\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><\/p>\n

Heather Clancy’s articles have appeared in Entrepreneur, Fortune, The International Herald Tribune and The New York Times.
\n\u00a0<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

Read More<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Google is investing an undisclosed sum in Energy Dome, a startup developer of long-duration battery technology that pairs with solar, wind and other intermittent renewable sources to provide clean power around the clock. Energy Dome\u2019s CO2 Battery uses liquid carbon dioxide to store electricity as it is generated. When the power source shuts off, the<\/p>\n","protected":false},"author":1,"featured_media":871384,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39897,334],"tags":[18381,5736],"class_list":{"0":"post-871383","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-google-backed","8":"category-startup","9":"tag-google-backed","10":"tag-startup"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/871383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/comments?post=871383"}],"version-history":[{"count":0,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/posts\/871383\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media\/871384"}],"wp:attachment":[{"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/media?parent=871383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/categories?post=871383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/newsycanuse.com\/index.php\/wp-json\/wp\/v2\/tags?post=871383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}