Battery storage capacity set to grow sixfold globally by 2030

⚡ AI Executive Summary

Global battery energy storage capacity is forecast to expand dramatically over the next five years, driven by electrification, industrial demand, and data centre power requirements alongside declining lithium-ion costs. China and the United States currently dominate the market, while Australia has emerged as a significant third player with rapid deployment gains. The shift from two-hour to four-hour battery systems reflects a fundamental change in grid architecture: as solar and wind penetration deepens, storage must bridge wider generation-demand gaps, particularly shifting midday solar output to evening peaks. This repositions batteries from peripheral grid-support devices to central load-balancing assets. Utilities and regulators are increasingly setting four-hour duration as a baseline for capacity planning, signalling that the market is standardizing around longer-discharge designs to maximize the economic value of energy arbitrage and improve grid resilience during steep net-load ramps.