![]() 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. | ZincFive ZincFive is an energy company focused on developing nickel-zinc (NiZn) battery technology solutions. | ![]() 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 2016 | Founding Date 2006 | Founding Date 2009 | Founding Date 2007 |
Type | Type Private | Type Private | Type Public | Type Private | Type Private | Type Private | Type Private |
Tags | |||||||
Locations | Locations Mukilteo, US HQ | Locations Bangkok, TH HQ | Locations Wilsonville, US HQ | Locations Tualatin, US HQ | Locations Tongzhou, CN HQ Vancouver, CA | Locations Hayward, US HQ Sandton, ZA Marlow, GB New York, US | Locations Pittsburgh, US HQ Mount Pleasant, US |
Employees | Employees 283% decrease | Employees N/A | Employees 6274% decrease | Employees 1212% increase | Employees 34 | Employees 18 | Employees 632% increase |
Operating ⚠ | |||||||
Patent Applications | Patent Applications 13 (Feb, 2018) | Patent Applications N/A | Patent Applications N/A | Patent Applications 29 (Feb, 2018) | Patent Applications N/A | Patent Applications N/A | Patent Applications N/A |
Patents (US) | Patents (US) N/A | Patents (US) N/A | Patents (US) N/A | Patents (US) 5 (Aug, 2021) | Patents (US) N/A | Patents (US) 24 (Feb, 2022) | Patents (US) N/A |
Patents Issued | Patents Issued 3 (Feb, 2018) | Patents Issued N/A | Patents Issued N/A | Patents Issued 100 (Aug, 2021) | Patents Issued N/A | Patents Issued 35 (Feb, 2022) | Patents Issued 11 (Feb, 2018) |
Patents Pending | Patents Pending N/A | Patents Pending N/A | Patents Pending N/A | Patents Pending N/A | Patents Pending N/A | Patents Pending 15 (Feb, 2022) | Patents Pending 10 (Feb, 2018) |
Storage Deployed, MWh | Storage Deployed, MWh 175 (Jun, 2017) | Storage Deployed, MWh N/A | Storage Deployed, MWh N/A | Storage Deployed, MWh N/A | Storage Deployed, MWh N/A | Storage Deployed, MWh N/A | Storage Deployed, MWh 35 (Feb, 2017) |
Trademarks (US) | Trademarks (US) N/A | Trademarks (US) N/A | Trademarks (US) N/A | Trademarks (US) 3 (Aug, 2021) | Trademarks (US) N/A | Trademarks (US) 7 (Feb, 2022) | Trademarks (US) N/A |
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 $ 13.1m (about 6 years ago) | Latest funding round $ 29.5m (over 14 years ago) | Latest funding round $ 4m (almost 7 years ago) | Latest funding round $ 33.2m (about 10 years ago) |
Total funding raised | Total funding raised $ 25m | Total funding raised $ 10.1m | Total funding raised $ 46.2m | Total funding raised $ 31.4m | Total funding raised $ 51.5m | Total funding raised $ 130.2m | Total funding raised $ 178.2m |

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 companyZincFive is an energy company focused on developing nickel-zinc (NiZn) battery technology solutions.
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