Rewbi
YC S24San Francisco, US · Founded 2024 · 3 employees · 3 known investors
Rewbi rebuilds the electrical grid by financing, optimizing, and maintaining clean energy sources, particularly battery systems for grid stabilization. The company serves the power industry to reduce emissions and increase grid reliability.
Advanced ManufacturingAI & Machine LearningCleantechEnergyB2BRenewable EnergyCloud ComputingClimateTechUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S24)
Rewbi was founded in 2024 by Thomas Marge and Derek Modzelewski.
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Thomas MargeinCo-Founder and CEOThomas Marge co-founded and leads Rewbi, an AI-powered battery storage optimization platform. Previously, he founded inBalance, a YC-backed company acquired by Stem in 2023, where he led battery storage optimization and forecasting; he also holds graduate degrees in applied and pure mathematics from Johns Hopkins University and completed doctoral work in pure mathematics at Cambridge.30 Under 30 2026
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Derek ModzelewskiinCo-Founder and CTODerek Modzelewski previously worked as an ML engineer at Meta on foundation models and served as an early technical hire at Adept, where he developed AI models. He holds a Master's degree in Computer Science and a B.S.E. in Computer Science and Applied Mathematics from Johns Hopkins University, and has roughly a decade of experience in energy commodity trading.30 Under 30 2026
Investors · 3
Funding
SEC filings, press & company announcementsSource: company announcements and press reports — follow each round's link for the claim.
In the news
Frequently asked questions
- What does Rewbi do?
- Rewbi rebuilds the electrical grid by financing, optimizing, and maintaining clean energy sources, particularly battery systems for grid stabilization. The company serves the power industry to reduce emissions and increase grid reliability.
- Who founded Rewbi?
- Rewbi was founded by Thomas Marge, Derek Modzelewski in 2024.
- Who are Rewbi's investors?
- Rewbi's investors include Aera VC, Olive Tree Capital, Y Combinator.
- Where is Rewbi headquartered?
- Rewbi is headquartered in San Francisco, US.