Still To Be Determined

Perovskite solar has promised a revolution for over a decade, so is it finally real? Matt and Sean talk with Joel Jean, co-founder and CEO of Swift Solar, the US startup spun out of MIT and Stanford. Joel explains how stacking a perovskite film on top of silicon lifts a solar cell's efficiency ceiling from 30 percent to about 45 percent. He also breaks down the three "tooth fairies" every new solar technology has to solve: performance, lifetime, and cost. So is perovskite tandem solar finally ready for your roof? Or is 25 year durability still one miracle away? Chapters: 00:00: Intro 03:20: Joel Jean Interview 41:02: The Super Soaker Mailbag Watch on YouTube: https://www.youtube.com/watch?v=vtmX0st3uOk Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

Most smart homes hand your house to Big Tech. Home Assistant is proof they don't have to. Matt and Sean sit down with Paulus Schoutsen, the software engineer who started Home Assistant, the largest open-source smart home platform in the world, now running in over 2 million homes. It runs locally, it keeps your data inside your house, and it doesn't stop working the day a company decides to shut off its servers. We get into why Paulus gave the whole project away to a nonprofit instead of selling it, how the energy dashboard turns your solar and battery into something genuinely useful, and whether a normal person can actually run this or if it's still a power-user thing. So is the open, local smart home finally good enough to replace Alexa and Google? Or is handing your house to Big Tech still the path of least resistance? Chapters: 00:00: Intro 01:20: Paulus Schoutsen 52:08: Feedback - Updates 56:20: Feedback - What Happens with the Chlorine? 59:24: Feedback - Climate Change 01:01:00: Feedback - Poutine Watch on YouTube: https://www.youtube.com/watch?v=JPEtYL9F0Vk Mentioned in this episode: Home Assistant (free, open source): https://www.home-assistant.io/ Nabu Casa / Home Assistant Cloud (~$80/yr, funds the mission): https://www.nabucasa.com/ Open Home Foundation: https://www.openhomefoundation.org/ Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

The inventor of the Super Soaker, Dr. Lonnie Johnson, joins Matt to talk about his most ambitious project yet: the JTEC, a heat engine with no moving parts that converts low-grade waste heat straight into electricity. They get into how it actually works, why Johnson thinks it could run far more efficiently than what we use today, and the long road from a 2003 idea to the first commercial unit. Plus how a billion-dollar water gun quietly funded a quarter-century of clean-energy research. Chapters: 00:00: Intro 05:06: Dr. Lonnie Johnson Interview 32:36: Previous Episode Feedback Watch on YouTube: https://www.youtube.com/watch?v=LhbPajWdgUk Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

Matt sat down with Jorge Diaz Schneider, CEO of Ion Storage Systems, to talk about their anode-less, ceramic-based solid-state battery that doesn't swell or need pressure to work. We get into why they're chasing consumer electronics instead of EVs, the new continuous manufacturing line they just fired up, and why so many solid-state startups have over-promised and flamed out. It's an honest look at where this technology really stands in 2026 … and where it's headed. This presentation is for informational and technical discussion purposes only and does not constitute an offer to sell, or a solicitation of an offer to buy, any securities or a recommendation regarding any investment, financing or strategic transaction. Statements regarding future product development, commercialization, market opportunities, manufacturing scale-up, customer adoption or future performance are forward-looking, subject to risks and uncertainties, and may differ materially from actual results. The company undertakes no obligation to update such statements except as required by law. Chapters: 00:00 - Intro 01:24 - Jorge Diaz Schneider Interview Watch on YouTube: https://www.youtube.com/watch?v=XbnuBbvX5_U Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

Matt and Sean talk to Dave Borlace from the YouTube channel, Just Have a Think, to discuss the current state of the renewable energy transition in the UK and the US. Dave’s YouTube channel: https://www.youtube.com/@JustHaveaThink Chapters: 00:00: Intro 01:47: Dave Borlace Interview 59:15: Previous Still TBD Episode Feedback 01:02:44: Undecided Episode Feedback Watch on YouTube: https://www.youtube.com/watch?v=0bw2IU73RG4 Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

Matt and Sean talk to Zack Nelson of JerryRiggedEverything about building a new wheelchair manufacturing business, solar DIY, and the history and future of his Youtube channel. Chapters: 00:00 - Intro 02:08 - Zach Nelson Interview 37:32 - Supercritical CO2 Turbines Discussion Watch on YouTube: https://www.youtube.com/watch?v=quA0gBAFEQk Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/@stilltbd YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Hosted on Acast. See acast.com/privacy for more information.

Matt and Sean talk to Karl Rábago about the internetification of the electrical grid, and what it means for the future of owning solar panels and energy. 00:00 - Intro 11:26 - Karl Rábago Interview Support the show directly: https://stilltbd.fm/join/ Audio version of the podcast: https://stilltbd.fm YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast YouTube membership: https://www.youtube.com/channel/UC4-aWB84Bupf5hxGqrwYqLA/join Get in touch: https://stilltbd.fm/contact/ Follow us on: Mastodon - https://mastodon.social/@mattferrell Bluesky - https://bsky.app/profile/mattferrell.bsky.social Undecided with Matt Ferrell: https://www.youtube.com/@undecidedtechnology Watch on YouTube: https://www.youtube.com/watch?v=gfCZL-vwWtA Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/nR8qn3cD1jQ Matt and Sean talk to Nona Yehia (Vertical Harvest) about vertical farming, technological “growth”, and the future of food. Watch the Undecided with Matt Ferrell episode, Why This Vertical Farm is 500x More Efficient Than Farming https://youtu.be/8sOEB2m0m9Y?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro (00:45) - - Nona Yehia Interview (37:50) - - Vertical Harvest Feedback YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/HicyIaKqRgk Matt talks with Two Bit Da Vinci and Ziroth about Donut Lab’s new battery, the controversy around it, and what they think it actually might be. Watch the Undecided with Matt Ferrell episode, The Breakthroughs My Net Zero Home is Missing https://youtu.be/hb2x5VcUT0I?list=PLnTSM-ORSgi7FwYRnWkpCSkAeFOzrgh5h (00:00) - - Intro (01:46) - - Donut Lab Conversation (01:01:40) - - Home Regrets Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/f67J9QO5LPY Matt and Sean talk about Donut Lab's solid state batteries, connecting with other YouTubers, and your questions. Watch the Undecided with Matt Ferrell episode, Why Everyone's Wrong About This Solid-State Battery https://youtu.be/C8ljwigh9jA?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (14:26) - - Donut Labs Solid State Battery Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/ve_k8pNY1sQ Matt and Sean talk with Alec Watson (TechnologyConnections) about future tech, current trends and dead ends, and why dishwashers are so fascinating. (00:00) - (00:00) - - Intro (02:36) - - TechnologyConnections Interview YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/lnu76C5Qd68 Matt and Sean talk about whether it’s a good idea or not to wait for next gen solar technology, or just pull the trigger and get what’s available today. Watch the Undecided with Matt Ferrell episode, Why Waiting for Better Solar Costs You More https://youtu.be/w2r9_0NxTW8?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (13:19) - - To Perovskite or Not Perovskite Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/v1o7RY43K-E Matt and Sean talk about heat pump comparisons, and a full long-form discussion with Paul Braren from TinkerTry.com Watch the Undecided with Matt Ferrell episode, Did I Get the Wrong Heat Pump: Geothermal vs Air Source https://youtu.be/CPwQTUaU-jI?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ A couple of posts about our heat pump comparison on TinkerTry.com: https://tinkertry.com/planning-for-heat-pump-comfort https://tinkertry.com/geothermal-vs-air-source-heat-pumps-feat-undecided-and-tinkertry (00:00) - - Intro (02:35) - - Undecided Feedback (09:23) - - Paul Braren Interview YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/HHX1K-nV8Ok Matt and Sean talk about flywheels, mechanical energy storage, and something unexpected that flew out of the comments. Two Bit Davinci video about the flywheel bus: https://youtu.be/LHyUDihL_FQ?si=xVp7qfUP82jm6wQl Watch the Undecided with Matt Ferrell episode, How 40-Ton Spinning Wheels Are Saving The Power Grid https://youtu.be/Z95t-f-0IjI?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (08:04) - - Flywheels Discussion (13:56) - - A Surprise Conversation YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

Matt and Sean talk about Aluminum as another battery option, and your comments. Watch the Undecided with Matt Ferrell episode, What This Aluminum‑Ion Breakthrough Means for You https://youtu.be/svHeBLgpRQs?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (15:59) - - Aluminum Battery Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/9M5cISgMNMM Matt and Sean get pumped talking about 3D Printing, Heat Pumps, and your comments. Watch the Undecided with Matt Ferrell episode, Are Heat Pumps a Scam? https://youtu.be/K2c6Rucbi84?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (25:58) - - Heat Pumps Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/BQoniKPE8Nw Matt and Sean talk about sodium batteries, why lithium prices are falling, and your comments. Watch the Undecided with Matt Ferrell episode, The 90% Price Crash That Changed Everything https://youtu.be/nrTCgZmUFCY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (14:39) - - Sodium Batteries Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/3fntze01h_k Matt and Sean talk about a new material we might see in solar panels, and Matt’s invasion on Hank Green. Watch the Undecided with Matt Ferrell episode, Why This Solar Breakthrough Matters More Than Perovskite https://youtu.be/F_OPrOpccJs?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (16:23) - - Kesterite Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/iSGqe9lefQI Matt and Sean talk about Matt’s CES 2026 visit, the good, the bad, the funny … including Donut Labs solid state battery. Watch the Undecided with Matt Ferrell episode, The Most Controversial Battery at CES 2026 https://youtu.be/Kt4c0o_3eyY?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (12:17) - - CES 2026 Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.

https://youtu.be/SrkuzIo1liM Matt and Sean talk about the current status of perovskite solar progress, plus your responses to our previous episodes. Watch the Undecided with Matt Ferrell episode, What Solar’s 2025 Breakthroughs Mean for 2026 https://youtu.be/FffKMMnisu4?list=PLnTSM-ORSgi7uzySCXq8VXhodHB5B5OiQ (00:00) - - Intro & Feedback (15:00) - - State of Solar Discussion YouTube version of the podcast: https://www.youtube.com/stilltbdpodcast Get in touch: https://undecidedmf.com/podcast-feedback Support the show: https://pod.fan/still-to-be-determined Follow us on X: @stilltbdfm @byseanferrell @mattferrell or @undecidedmf Undecided with Matt Ferrell: https://www.youtube.com/undecidedmf ★ Support this podcast ★ Hosted on Acast. See acast.com/privacy for more information.