Climate tech reporter at MIT Technology Review ~ big fan of batteries and also the New York Mets. Want me in your inbox? Sign up for The Spark: technologyreview.com/sparkhttps://bsky.app/profile/caseycrownhart.bsky.socialhttps://bsky.app/profile/caseycrownhart.bsky.social/post/3mwoezowv2c2bWe put together a new list of Climate Tech Companies to Watch 👀 Any guesses on which companies made it?? (Preview story by the wonderful @jtemple.bsky.social) https://www.technologyreview.com/2026/09/29/1145183/2026-climate-tech-companies-to-watch-preview/29 Sep 2026 17:45 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3mwoezowv2c2bhttps://bsky.app/profile/caseycrownhart.bsky.social/post/3mae3b3cxt22lFascinating look at what's happening to early EVs coming off the roads by @caiwei.bsky.social https://www.technologyreview.com/2025/12/18/1130148/china-ev-battery-recycle/19 Dec 2025 16:09 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3mae3b3cxt22lhttps://bsky.app/profile/caseycrownhart.bsky.social/post/3lwvx5qwhvs2cWe've finally got some hard numbers on AI's energy demand from a major tech company: Google says a median prompt to Gemini uses 0.24 watt-hours of electricity. 🧵 @technologyreview.com https://www.technologyreview.com/2025/08/21/1122288/google-gemini-ai-energy/21 Aug 2025 12:32 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3lwvx5qwhvs2chttps://bsky.app/profile/caseycrownhart.bsky.social/post/3lwvx5qwhvs2cWe've finally got some hard numbers on AI's energy demand from a major tech company: Google says a median prompt to Gemini uses 0.24 watt-hours of electricity. 🧵 @technologyreview.com https://www.technologyreview.com/2025/08/21/1122288/google-gemini-ai-energy/21 Aug 2025 12:32 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3lwvx5qwhvs2chttps://bsky.app/profile/caseycrownhart.bsky.social/post/3lrdtmbylas2aSam Altman says an average query to ChatGPT uses about 0.34 watt hours of electricity in a new blog post. But I have some questions about this number (short 🧵) #energysky11 Jun 2025 16:34 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3lrdtmbylas2ahttps://bsky.app/profile/caseycrownhart.bsky.social/post/3lpm4gst6fc26We’re all talking about AI and energy demand, but there’s still a lot of question marks. So @jamesmodonnell.bsky.social and I got together and did some math. After six months of reporting, we found that AI's energy demand is anything but constant, and the common understanding is full of holes. https://www.technologyreview.com/2025/05/20/1116327/ai-energy-usage-climate-footprint-big-tech/20 May 2025 12:43 +0000at://did:plc:3o7sd2wl7nflzhvfkvtsbrw3/app.bsky.feed.post/3lpm4gst6fc26