Spain's Bihar Batteries Builds Sodium Power from Salt

Spain is proving that the future of energy storage might come from the most ordinary ingredient: salt.

Bihar Batteries, a Spanish startup, just announced a major partnership to commercialize sodium-ion batteries made from local materials like salt and wood. Unlike traditional batteries that depend on expensive lithium, these innovative power cells use sodium extracted from everyday salt, making them both affordable and abundant.

The company has already built working prototypes with CIC energiGUNE, a research center with over 13 years of sodium battery expertise. The results have been described as "very promising," marking a significant milestone for European energy independence.

What makes Bihar's approach even more exciting is their use of wood to create hard carbon, a crucial component for sodium battery anodes. By sourcing materials locally, they're building what they call "a local industry around sodium batteries" that could keep jobs and innovation in Spain.

This week's collaboration with NX Technologies, a company specializing in electric mobility power systems, moves Bihar closer to bringing their batteries to market this year. The partnership combines Bihar's battery innovation with NX's expertise in making these systems work in real-world applications.

The Ripple Effect goes far beyond Spain's borders. Sodium-ion technology is gaining serious momentum worldwide, with Chinese manufacturing giant CATL securing a massive 60 GWh order earlier this week. As lithium battery prices climb and supply concerns grow, sodium offers a compelling alternative that's both cheaper and more sustainable.

Europe is betting big on this technology as a nearshoring opportunity. Unlike lithium, which requires complex international supply chains, sodium can be sourced locally almost anywhere. This means European countries can build their own battery industries without depending on imported materials or foreign manufacturing.

For everyday people, sodium batteries could mean more affordable electric vehicles, cheaper home energy storage, and more reliable renewable energy grids. The technology is particularly suited for stationary energy storage, helping solar and wind farms store power for when it's needed most.

Bihar's commitment to using local Spanish materials also creates a model other countries can follow. By turning abundant resources into advanced technology, they're showing how regions can build high-tech industries from their own backyards.

Spain is turning salt into the building blocks of a cleaner energy future, one battery at a time.