Rewbi

We’re Rewbi!

Rewbi uses AI to optimize grid-connected battery storage. We generate revenue by charging batteries when electricity is cheap and discharging when electricity is expensive.

We rent battery storage for a fixed fee per month, and we earn more than double that fee in monthly revenue by dispatching the battery optimally.

Today, power companies use human traders to manually track grid conditions and update the battery’s dispatch schedule. However, batteries can adjust their power output 100x faster than traditional power generation (e.g., hydro, coal, nuclear, gas), with the ability to go from full-speed charging to full-speed discharging in under a minute. Electricity prices change every 5 minutes, often by 300% or more. Our AI better tracks 100s of live inputs, and it makes decisions faster than a human operator (with lower overhead), more than doubling revenue.

Since starting YC, we’ve joined ERCOT (the Texas grid operator) as a registered power company.

Our Team

Thomas has built battery dispatch (and wind farm optimization) solutions for the past 8 years, including as founder of inBalance (YCW21, acquired by Stem, Inc. in January of 2023). Derek wrote his first commodity trading and risk management algorithm for a fund when he was 18, and he was the first technical hire at Adept - his models were used to raise over $400m. We’ve known each other for a decade - we met working together on grad level math courses as freshmen at Hopkins.

Asks

We would love to speak with battery storage developers - message us at https://www.rewbi.com/contact or email us at founders@rewbi.com!