B2U Storage Solutions

B2U Storage Solutions (B2U) develops battery energy storage systems (ESS) and sells stored electricity into power markets when it is needed most. B2U’s ESS uses second life EV batteries to achieve a superior Levelized Cost of Storage (LCOS).  

B2U was founded in 2019 by Freeman Hall and Mike Stern.  B2U was spun off from Solar Electric Solutions (SES), where since 2008 SES had developed 100 MWs of solar PV across 11 projects. 

As of April 2020, our first storage deployment using repurposed EV batteries became operational in Lancaster, California. At this site, we’ve configured over 4MWh (250 EV Battery Packs) to charge and discharge efficiently while accounting for state of health variance.

B2U closed a $10M Series investment led by Marubeni Corp. in September 2021.