![]() ESS ESS Tech (Energy Storage Systems) is a company that manufactures long-duration energy storage solutions suited for commercial, industrial, utility, microgrid, and off-grid applications. | ![]() VRB Energy VRB Energy (formerly known as Pu Neng and Prudent Energy) designs and manufactures Vanadium Redox Battery Energy Storage System, an advanced flow battery system. | |||
Founding Date | Founding Date 2012 | Founding Date 2000 | Founding Date 2011 | Founding Date 2006 |
Type | Type Private | Type Private | Type Public | Type Private |
Tags | ||||
Locations | Locations Mukilteo, US HQ | Locations Bangkok, TH HQ | Locations Wilsonville, US HQ | Locations Tongzhou, CN HQ Vancouver, CA |
Employees | Employees 283% decrease | Employees N/A | Employees 6274% decrease | Employees 34 |
Funding | ||||
Latest funding round | Latest funding round $ 25m (over 10 years ago) | Latest funding round $ 10.1m (over 17 years ago) | Latest funding round N/A | Latest funding round $ 29.5m (almost 15 years ago) |
Total funding raised | Total funding raised $ 25m | Total funding raised $ 10.1m | Total funding raised $ 46.2m | Total funding raised $ 51.5m |

ESS Tech (Energy Storage Systems) is a company that manufactures long-duration energy storage solutions suited for commercial, industrial, utility, microgrid, and off-grid applications.
View company
VRB Energy (formerly known as Pu Neng and Prudent Energy) designs and manufactures Vanadium Redox Battery Energy Storage System, an advanced flow battery system.
View company