Cell Design and Materials: Alternative Chemistries

Flow Battery/Metal-Air Deployments That Came Online in 2025 Vanadium flow batteries led for deployments in operation in 2025, including the largest flow battery deployment in the world. A strong pipeline of projects in development and on order show a more diversified technology profile in the coming years. Project name

Location

Capacity MW

Viejas Microgrid

Alpine, CA

V-iOn Project

La Plana, Spain

Saudi Aramco Gasfield Pilot

Saudi Arabia

Hami GTIC Shichengzi ESS

Energy MWh

ESS provider

Chemistry

Developer / Owner

Invinity Energy Systems

Vanadium

Indian Energy

Invinity Energy Systems

Vanadium

Gamesa Electric

Rongke Power

Vanadium

Hami, China

Rongke Power

Vanadium

Nagel Group Germany

Bochum, Germany

CellCube

Vanadium

Nagel Group

Conway Medical Center

Conway, SC

CellCube

Vanadium

Bernhard

G&W Electric Microgrid

Bolingbrook, CA

CellCube

Vanadium

G&W Electric

NETRA VRFB Demonstration

Greater Noida, India

Delectrik

Vanadium

NTPC

Project Nexus

Turlock, CA

ESS

All iron

Turlock Irrigation District

JTC CleanTech One Building

Singapore

VFlowTech

Vanadium

JTC

Source: Fairgreen Climate LDES Tracker

Duration (hours)

Extracted from the PDF; charts and images may read imperfectly.