Batteries have moved to the center of the energy transition, according to Canary Media's Chart of the Week. Deployment has grown rapidly in recent years, and last year more than 1.5 terawatt-hours of batteries were installed across electric vehicles and grid storage.
China is supplying that boom. The country's manufacturing strength makes it a dominant force in the global battery market, affecting everything from EV production to the storage systems utilities rely on. The scale of last year's deployment signals that batteries are no longer a niche technology but a core part of the modern energy system.