Energy storage technology expands into grid infrastructure and national defense

Energy storage systems (ESS) are transitioning from simple backup power to critical infrastructure for global electricity grids. As renewable energy penetration increases, storage technologies like batteries provide the necessary flexibility to manage variable generation from solar and wind. Global installed capacity for ESS reached 768.5 GW in 2025, with projections suggesting it could reach 3,735.3 GW by 2033. Electrochemical storage, led by lithium-ion technology, accounted for 58% of the market in 2025, with utility-scale applications representing 66% of that segment.

Beyond grid stability, batteries have become a strategic priority for national defense. Due to geopolitical tensions, governments are increasingly treating batteries as munitions rather than mere commodities. In the United States, defense policies are shifting to prioritize domestic production and secure supply chains to reduce reliance on China. Programs such as the Drone Dominance Program aim to bolster domestic manufacturing, reflecting a broader mandate to prohibit the procurement of battery cells or systems from Chinese sources through 2031.