California Desert to Host Sodium Battery Project

Why this is here: The new sodium-ion batteries are designed to support high charge and discharge rates, enabling multiple grid cycles each day for applications like solar shifting and frequency regulation.

Alsym Energy and Juniper Energy will deploy a 500 megawatt-hour sodium-ion battery storage system in the Mojave Desert of California and Nevada. The companies signed a partnership to install these batteries, focusing on areas prone to extreme heat. Traditional lithium-ion batteries require costly cooling systems in these conditions, but Alsym’s technology uses passive cooling to reduce energy use and costs.

The sodium-ion batteries eliminate the risk of thermal runaway, a dangerous overheating issue common in lithium-ion designs. They can also fully charge in about 30 minutes, supporting multiple daily grid cycles for applications like solar power shifting. California added a record 7,000 megawatts of clean energy in 2024 and aims for 100 percent clean energy by 2045, increasing demand for reliable storage.

Alsym developed the battery chemistry using artificial intelligence, accelerating the discovery of viable materials. While the initial phase will focus on California, the companies plan to expand sodium-ion systems across Juniper Energy’s projects. Further development is needed to fully scale production and integration with existing grid infrastructure.