Achievements
- Founded inBalance, a Y Combinator W21 energy storage optimization startup, later acquired by Stem, Inc.
- Served as Director of Product at Stem, Inc., focusing on battery storage and energy market forecasting
- Co-founded Rewbi in 2024, a Y Combinator-backed startup using AI to improve grid-connected battery storage in Texas
- Rewbi is registered with ERCOT, showcasing its operation at the grid level
- Holds a Masters in Applied Mathematics and a B.S.E. in Pure and Applied Mathematics from Johns Hopkins University
- Began a PhD in Pure Mathematics at Cambridge but left to focus on energy startup ventures
Check out Thomas Marge
Yo, so let me tell you about Thomas Marge – this guy is straight-up the real deal in energy tech. He’s like the brain behind Rewbi, a San Francisco startup that’s all about using AI to make battery storage way smarter and more fast on the grid. Think of it like giving batteries a brain to improve when they charge and discharge – insane, right? That’s what he’s crushing now, but his story is way more interesting when you look at where he came from.
Thomas’s process started in academia – dude’s got a Masters in Applied Math and a B.S.E. in Pure and Applied Math from Johns Hopkins, and he even jumped into a PhD at Cambridge in Pure Math. But here’s the thing – he dropped all that to jump into the energy game. That shows you right away: this guy’s about solving real-world problems, not just chasing academic glory. He saw that energy storage and optimization? That’s where the future is, and he wanted in.
Before Rewbi, he founded inBalance, a Y Combinator W21 startup that focused on energy storage optimization. The dude’s been neck-deep in battery dispatch and wind farm stuff for over 8 years, using AI and crazy math modeling to make energy markets work better. InBalance was so good that Stem, Inc., a big player in energy storage, bought it in early 2023. After that, Thomas didn’t just chill – he stepped into a leadership role at Stem as Director of Product for battery storage and market forecasting. So, he’s not just a founder, he’s a *player* who’s been recognized by major players and keeps pushing the envelope.
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Talk to herFast forward to today – he’s the co-founder and CEO of Rewbi, which just launched in 2024 and is backed by YC, one of the top startup accelerators out there. Rewbi’s registered with ERCOT, the Texas grid operator, which is a big deal because it shows they’re legit, operating at the grid level, not just some side project. And they’re using AI to improve grid-connected batteries – kind of like giving the grid a new brain to handle energy better, more sustainably, and cheaper.
What does all this say about Thomas? Dude’s relentlessly driven, super smart, and totally committed to pushing energy tech forward. He’s not just about building startups; he’s about changing how the world uses and stores energy. His whole career screams one thing: he’s motivated by real impact, by making the grid smarter, cleaner, and more fast. And judging by his track record, he’s only just getting started.
Bottom line? Thomas Marge is one of those guys who saw a massive problem – the energy crisis, the inefficiencies in storage and market optimization – and jumped in headfirst. His process from math nerd to startup founder to energy innovator is all about that hustle, that vision to make the future better. No Cap, he’s a huge name to watch in the energy space – a legit innovator with the skills, the experience, and the fire to keep crushing it.

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