Form Energy

USA · 2017

Multi-day iron-air batteries for a reliable, renewable grid

🏭 1 tech 📦 1 products 💰 Series D
🔋

ESS Tech

USA · 2011

Long-duration iron flow batteries for utility and commercial applications

🏭 1 tech 📦 2 products 💰 Public (NYSE: GWH)
🔋

Eos Energy Enterprises

USA · 2008

Safe, sustainable, scalable zinc-based battery storage

🏭 1 tech 📦 1 products 💰 Public (NASDAQ: EOSE)

Invinity Energy Systems

UK · 2019

Vanadium flow batteries for a zero-carbon future

🏭 1 tech 📦 1 products 💰 Public (LON: IES)
🏗️

Energy Vault

Switzerland · 2017

Gravity-based long-duration energy storage

🏭 1 tech 📦 2 products 💰 Public (NYSE: GWH)
❄️

Highview Power

UK · 2005

Cryogenic energy storage for long-duration grid applications

🏭 1 tech 📦 1 products 💰 Private
💨

Hydrostor

Canada · 2010

Advanced compressed air energy storage for a clean energy future

🏭 1 tech 📦 1 products 💰 Private
🏭

Sumitomo Electric Industries

Japan · 1897

Industrial-grade vanadium redox flow batteries

🏭 1 tech 📦 1 products 💰 Public (TYO: 5802)
🔥

MGA Thermal

Australia · 2019

Modular thermal energy storage using Miscibility Gap Alloy blocks

🏭 1 tech 📦 1 products 💰 Series A
🧱

Rondo Energy

USA · 2020

Brick-based heat batteries for industrial decarbonization

🏭 1 tech 📦 1 products 💰 Series C
🌡️

Malta Inc.

USA · 2018

Pumped heat energy storage for grid-scale long-duration applications

🏭 1 tech 📦 1 products 💰 Series B
🌿

CMBlu Energy

Germany · 2019

Organic flow batteries using sustainable, non-toxic electrolytes

🏭 1 tech 📦 1 products 💰 Series A

VoltStorage

Germany · 2013

Iron flow batteries for sustainable long-duration storage

🏭 1 tech 📦 1 products 💰 Series C
🔋

VFlowTech

Singapore · 2019

Compact vanadium flow batteries for tropical climates

🏭 1 tech 📦 1 products 💰 Series A
🔋

e-Zinc

Canada · 2012

Zinc-air batteries for long-duration energy storage

🏭 1 tech 📦 1 products 💰 Series A
🔶

Ambri

USA · 2010

Liquid metal batteries for the grid-scale future

🏭 1 tech 📦 1 products 💰 Series D

EnerVenue

USA · 2020

Metal-hydrogen batteries for durable, long-duration storage

🏭 1 tech 📦 1 products 💰 Series D
💎

QuantumScape

USA · 2010

Solid-state lithium-metal batteries for energy storage

🏭 1 tech 📦 1 products 💰 Public (NYSE: QS)
⚙️

GE Vernova

USA · 2024

Grid-scale energy storage solutions from a global power leader

🏭 2 tech 📦 2 products 💰 Public (NYSE: GEV)
💧

RheEnergise

UK · 2017

High-density fluid pumped storage for hillside locations

🏭 1 tech 📦 1 products 💰 Series B
🏗️

Lina Energy

Ireland · 2020

Underground gravity storage using vertical shaft technology

🏭 1 tech 📦 1 products 💰 Series A
💧

Primus Power

USA · 2009

Zinc-bromine flow batteries for long-duration grid storage

🏭 1 tech 📦 1 products 💰 Private
💨

Storlectric

USA · 2021

Modular compressed air storage with no geological constraints

🏭 1 tech 📦 1 products 💰 Series A
🔋

i-Battery

China · 2018

Sodium-ion batteries for cost-effective energy storage

🏭 1 tech 📦 1 products 💰 Series B
🔋

Hithium

China · 2019

Specialized battery manufacturer for stationary energy storage

🏭 2 tech 📦 2 products 💰 Series D