The Future of Battery Energy Storage

Developments in batteries and other energy storage technology have accelerated to a seemingly head-spinning pace recently — even for the scientists, investors, and business leaders at the forefront of the industry. After all, just two decades ago, batteries were widely believed to be destined for use only in small objects like laptops and watches.

As the world moves towards renewable energy, Battery Energy Storage Systems (BESS) have become essential for facilitating the global energy transition. In 2025, advancements in energy storage technology focus on enhancing energy reliability, stabilizing renewable sources, and reducing the carbon footprint of power grids.

Battery storage can help with frequency stability and control for short-term needs, and they can help with energy management or reserves for long-term needs. Storage can be employed in addition to primary generation since it allows for the production of energy during off-peak hours, which can then be stored as reserve power.

Modern battery technology offers a number of advantages over earlier models, including increased specific energy and energy density (more energy stored per unit of volume or weight), increased lifetime, and improved safety .

While lithium-ion batteries have dominated the energy storage landscape, there is a growing interest in exploring alternative battery technologies that offer improved performance, safety, and sustainability .

Storage enables electricity systems to remain in balance despite variations in wind and solar availability, allowing for cost-effective deep decarbonization while maintaining reliability. The Future of Energy Storage report is an essential analysis of this key component in decarbonizing our energy infrastructure and combating climate change.